1
|
González-Blázquez R, Gil-Ortega M, Alcalá M, González-Moreno D, Viana M, Chowen JA, Sanz-Gómez M, Fernández-Alfonso MS, Somoza B. Short-term dietary intervention improves endothelial dysfunction induced by high-fat feeding in mice through upregulation of the AMPK-CREB signaling pathway. Acta Physiol (Oxf) 2023; 239:e14023. [PMID: 37553856 DOI: 10.1111/apha.14023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 07/19/2023] [Accepted: 07/21/2023] [Indexed: 08/10/2023]
Abstract
AIM In addition to functioning as an energy sensor switch, AMPK plays a key role in the maintenance of cardiovascular homeostasis. However, obesity disrupts AMPK signaling, contributing to endothelial dysfunction and cardiovascular disease. This study aimed to elucidate if a short-term dietary intervention consisting in replacing the high-fat diet with a standard diet for 2 weeks could reverse obesity-induced endothelial dysfunction via AMPK-CREB activation. METHODS For this, 5-week-old male C57BL6J mice were fed a standard (Chow) or a high-fat (HF) diet for 8 weeks. The HF diet was replaced by the chow diet for the last 2 weeks in half of HF mice, generating 3 groups: Chow, HF and HF-Chow. Vascular reactivity and western-blot assays were performed in the thoracic aorta. RESULTS Returning to a chow diet significantly reduced body weight and glucose intolerance. Relaxant responses to acetylcholine and the AMPK activator (AICAR) were significantly impaired in HF mice but improved in HF-Chow mice. The protein levels of AMPKα, p-CREB and antioxidant systems (heme oxygenase-1 (HO-1) and catalase) were significantly reduced in HF but normalized in HF-Chow mice. CONCLUSION Improving dietary intake by replacing a HF diet with a standard diet improves AMPK-mediated responses due to the upregulation of the AMPK/CREB/HO-1 signaling pathway.
Collapse
Affiliation(s)
- Raquel González-Blázquez
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Madrid, Spain
| | - Marta Gil-Ortega
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Madrid, Spain
| | - Martín Alcalá
- Departamento de Química y Bioquímica, Facultad de Farmacia, Universidad CEU-San Pablo, CEU Universities, Madrid, Spain
| | - Daniel González-Moreno
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Madrid, Spain
| | - Marta Viana
- Departamento de Química y Bioquímica, Facultad de Farmacia, Universidad CEU-San Pablo, CEU Universities, Madrid, Spain
| | - Julie A Chowen
- Department of Pediatric Endocrinology, Hospital Infantil Universitario Niño Jesús, Instituto de Investigación la Princesa, Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- IMDEA Food Institute, CEI UAM + CSIC, Madrid, Spain
| | - Marta Sanz-Gómez
- Instituto Pluridisciplinar, Unidad de Cartografía Cerebral, Universidad Complutense de Madrid, Madrid, Spain
| | - María S Fernández-Alfonso
- Instituto Pluridisciplinar, Unidad de Cartografía Cerebral, Universidad Complutense de Madrid, Madrid, Spain
- Departamento de Farmacología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
| | - Beatriz Somoza
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Madrid, Spain
| |
Collapse
|
2
|
Nielsen A, Handel M, Stone J, Lee M. Misreport of burns as a result of 'coining', Gua sha; inherent harms from publication and ongoing citation of false facts. Integr Med Res 2023; 12:100953. [PMID: 37201160 PMCID: PMC10186471 DOI: 10.1016/j.imr.2023.100953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 05/02/2023] [Indexed: 05/20/2023] Open
Affiliation(s)
- Arya Nielsen
- Icahn School of Medicine at Mount Sinai, Department of Family Medicine & Community Health, New York, USA
- Corresponding author at: Icahn School of Medicine at Mount Sinai, Department of Family Medicine & Community Health, New York, USA
| | - Marsha Handel
- Icahn School of Medicine at Mount Sinai, Department of Family Medicine & Community Health, New York, USA
| | | | - Myeong Soo Lee
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
- Korean Convergence Medical Science, University of Science and Technology, Daejeon, Republic of Korea
| |
Collapse
|
3
|
Zheng Y, Yang X, Wu S, Yi G, Huang X, Feng Z, Qu L, Liu L, Li Q, Xia Z. Paired Box Gene 6 Regulates Heme Oxygenase-1 Expression and Mitigates Hydrogen Peroxide-Induced Oxidative Stress in Lens Epithelial Cells. Curr Eye Res 2022; 47:1516-1524. [PMID: 36149046 DOI: 10.1080/02713683.2022.2110266] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
PURPOSE This study aimed to investigate the regulation of heme oxygenase-1 (HO-1) by paired box gene 6 (Pax6) and their roles in hydrogen peroxide (H2O2)-induced oxidative stress and apoptosis in lens epithelial cells (LECs) (SRA01/04, HLE-B3). METHODS Lens anterior capsule membranes of mice of different ages were obtained to compare differences in the expression of Pax6 and HO-1 using Western blotting. Pax6-overexpressing plasmid and small interfering RNA were designed to overexpress and silence Pax6, respectively. Cobalt protoporphyrin (CoPP) was used to promote the expression of HO-1. Oxidative damage in LECs was induced by treatment with H2O2 (400 µM) for 24 h. Cell viability was measured using the Cell Counting Kit-8 assay. Intracellular reactive oxygen species (ROS) were detected using flow cytometry and immunofluorescence. Superoxide dismutase (SOD) level was measured using SOD Assay Kit and apoptotic cells were quantified using annexin V-fluorescein isothiocyanate/propidium iodide staining. RESULTS Pax6 and HO-1 expression levels showed an age-dependent decrease in LECs of mouse. Overexpressing Pax6 upregulated HO-1 expression level. Silencing Pax6 downregulated the HO-1 expression level, resulting in increased generation of ROS, reduced SOD activity, decreased cell viability, and increased apoptotic cells of LECs under H2O2-induced oxidative stress. Overexpressing Pax6 and CoPP both mitigates H2O2-induced oxidative stress by increasing the expression of HO-1 of LECs. CONCLUSION Pax6 and HO-1 expression levels showed an age-dependent decrease in LECs in mouse anterior capsules. Pax6 could regulate the expression of HO-1 in LECs. The decrease of Pax6 weakened the antioxidant ability of LECs under H2O2-induced oxidative stress by downregulating HO-1, which may be a potential mechanism for the formation of age-related cataract.
Collapse
Affiliation(s)
- Yuxing Zheng
- Department of Ophthalmology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xiaoxi Yang
- Department of Ophthalmology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Shuduan Wu
- Department of Ophthalmology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Guoguo Yi
- Department of Ophthalmology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xiaobo Huang
- Department of Ophthalmology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Zhizhen Feng
- Department of Ophthalmology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Lei Qu
- Department of Ophthalmology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Linyu Liu
- Department of Ophthalmology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Qianyun Li
- Department of Ophthalmology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Zhaoxia Xia
- Department of Ophthalmology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| |
Collapse
|
4
|
The neutrophil to lymphocyte ratio and serum albumin as predictors of acute kidney injury after coronary artery bypass grafting. Sci Rep 2022; 12:15438. [PMID: 36104386 PMCID: PMC9475019 DOI: 10.1038/s41598-022-19772-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 09/05/2022] [Indexed: 11/16/2022] Open
Abstract
Postoperative acute kidney injury (AKI) is a highly prevalent and serious complication after cardiac surgery. The aim of this study is to identify the predictors of AKI and the cut-off values after isolated off-pump coronary artery bypass grafting (OPCAB). A total of 329 adult patients, who underwent isolated OPCAB between December 2008 and February 2021, were retrospectively analyzed. The patients were divided into three groups: non-AKI, early AKI and late AKI groups. The early AKI group or the late AKI group were defined as ‘having AKI that occurred before or after 48 h postoperatively’, respectively. Multivariate logistic regression analysis was performed to identify the predictors of AKI. Receiver operating characteristic (ROC) curve analysis was used to evaluate the cutoff value, the sensitivity, and the specificity of the predictors. On the multivariate analysis, the emergency surgery, the preoperative serum albumin, and the postoperative day 1 neutrophil to lymphocyte ratio (NL ratio) were identified as the independent predictors of AKI. However, neither albumin nor the NL ratio predicted late AKI. The present study showed the preoperative albumin and the postoperative day 1 NL ratio were the robust and independent predictors of postoperative early AKI in isolated OPCAB.
Collapse
|
5
|
The emerging coloprotective effect of sildenafil against ulcerative colitis in rats via exerting counterbalance between NF-κB signaling and Nrf-2/HO-1 pathway. Inflammopharmacology 2022; 30:1351-1362. [PMID: 35834151 PMCID: PMC9293796 DOI: 10.1007/s10787-022-01016-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 06/02/2022] [Indexed: 11/05/2022]
Abstract
The current work explored the influences of time dependent Sildenafil (SILD) administration, and the possible outcomes from its concomitant administration with dexamethasone against acetic acid-induced ulcerative colitis in rats. Rats were assigned into six random groups: diseased group (AA), injected once with 2 ml acetic acid (3%) intrarectally, 2 days before sacrification. SILD + AA, received sildenafil (25 mg/kg, orally) for 6 days starting 3 days pre-injection of AA; SILD-t + AA, received sildenafil (25 mg/kg, orally), starting at time of AA injection and continued for 3 days; DEXA + AA, received dexamethasone (2 mg/kg, i.p.) for 3 days, starting at time of AA injection; SILD-t + DEXA + AA, received sildenafil (25 mg/kg, orally) and dexamethasone (2 mg/kg, i.p.), as mentioned. Sildenafil markedly ameliorated disease activity index (DAI), ulcer scores, colon length shortening and colonic histopathological changes. Mechanistically, Sildenafil markedly attenuated immunoexpression of NF-κB p65/ TNF-α and COX-2, diminished oxidative stress (↓ MDA/NO levels and ↑ GSH level and SOD activity), increased levels of Nrf-2/HO-1, compared to untreated group. Taken together, Sildenafil treatment suppressed acetic acid-induced ulcerative colitis, probably via inhibiting NF-κB/TNF-α signaling dependent of Nrf-2/HO-1 pathway, reducing oxidative stress and attenuating inflammation. Surprisingly, effects of sildenafil were unpromoted in a time dependant manner. Short term treatment with sildenafil was sufficient to exert its coloprotective effect, while longer term pretreatment was only superior among other treatments in the macroscopical changes. Moreover, concurrent administration of sildenafil and dexamethasone had the preference in boosting the antioxidant defense and anti-inflammatory mechanisms, visualized by histopathological/immunohistochemical changes.
Collapse
|
6
|
Sun HJ, Wang ZC, Nie XW, Bian JS. Therapeutic potential of carbon monoxide in hypertension-induced vascular smooth muscle cell damage revisited: from physiology and pharmacology. Biochem Pharmacol 2022; 199:115008. [PMID: 35318039 DOI: 10.1016/j.bcp.2022.115008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/13/2022] [Accepted: 03/15/2022] [Indexed: 01/14/2023]
Abstract
As a chronic and progressive disorder, hypertension remains to be a serious public health problem around the world. Among the different types of hypertension, pulmonary arterial hypertension (PAH) is a devastating disease associated with pulmonary arteriole remodeling, right ventricular failure and death. The contemporary management of systemic hypertension and PAH has substantially grown since more therapeutic targets and/or agents have been developed. Evolving treatment strategies targeting the vascular remodeling lead to improving outcomes in patients with hypertension, nevertheless, significant advancement opportunities for developing better antihypertensive drugs remain. Carbon monoxide (CO), an active endogenous gasotransmitter along with hydrogen sulfide (H2S) and nitric oxide (NO), is primarily generated by heme oxygenase (HO). Cumulative evidence suggests that CO is considered as an important signaling molecule under both physiological and pathological conditions. Studies have shown that CO confers a number of biological and pharmacological properties, especially its involvement in the pathological process and treatment of hypertension-related vascular remodeling. This review will critically outline the roles of CO in hypertension-associated vascular remodeling and discuss the underlying mechanisms for the protective effects of CO against hypertension and vascular remodeling. In addition, we will propose the challenges and perspectives of CO in hypertensive vascular remodeling. It is expected that a comprehensive understanding of CO in the vasculature might be essential to translate CO to be a novel pharmacological agent for hypertension-induced vascular remodeling.
Collapse
Affiliation(s)
- Hai-Jian Sun
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Zi-Chao Wang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Xiao-Wei Nie
- Shenzhen Key Laboratory of Respiratory Diseases, Shenzhen People's Hospital (The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518055, China.
| | - Jin-Song Bian
- Department of Pharmacology, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China; National University of Singapore (Suzhou) Research Institute, Suzhou, Jiangsu 215000, China.
| |
Collapse
|
7
|
Teixeira Bonfim L, Mota TC, Gomes JJ, da Silva E, Gomes LM, Burbano RMR, Bahia MO. Assessment of the cytoprotective effect of the homeopathic compound Canova® on African green monkey kidney (VERO) cell line exposed to the drug dipyrone sodium. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2021; 84:761-768. [PMID: 34180377 DOI: 10.1080/15287394.2021.1942355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Dipyrone or metamizole is one of the most frequently used analgesic worldwide. Despite its widespread use, this drug may exert genotoxic and cytotoxic effects on lymphocytes. Therefore, studies with therapeutic agents that may provide protection against these effects are important. The homeopathic compound Canova® (CA) appears to be a beneficial candidate for preventing DNA damage and cellular lethality, since this compound acts as an immunomodulator associated with cytoprotective actions. Hence, the aim of the present investigation was to determine the potential cytoprotective effects of CA using cell line VERO as a model. VERO cells were incubated with sodium dipyrone and subsequently subject to the comet, apoptosis and immunocytochemistry assays. Data demonstrated that sodium dipyrone induced an increase in DNA damage index (DI) employing the comet assay. However, when VERO cells were co-treated with CA at the three concentrations studied, a significant reduction in DI was observed, indicating an antigenotoxic effect attributed to CA. Further dipyrone induced an elevation in %apoptosis at 24 and 48 hr. However, when dipyrone was co-incubated with CA, a significant reduction in %apoptosis was noted at the three concentrations of CA employed. Results from immunocytochemical analysis showed a rise in the expression of caspase 8 and cytochrome C when cells were exposed to dipyrone. In contrast, co-treatment of dipyrone and CA significantly reduced the effect of dipyrone. Therefore, evidence indicated that CA acted as an anticytotoxic and antigenotoxic agent counteracting damage induced by dipyrone.
Collapse
Affiliation(s)
- Laís Teixeira Bonfim
- Laboratory of Human Cytogenetic, Institute of Biological Sciences, Federal University of Pará (UFPA), Belém-Pará, Brazil
| | - Tatiane Cristina Mota
- Laboratory of Human Cytogenetic, Institute of Biological Sciences, Federal University of Pará (UFPA), Belém-Pará, Brazil
| | - Jéssica Juliana Gomes
- Laboratory of Human Cytogenetic, Institute of Biological Sciences, Federal University of Pará (UFPA), Belém-Pará, Brazil
| | - Emerson da Silva
- Laboratory of Human Cytogenetic, Institute of Biological Sciences, Federal University of Pará (UFPA), Belém-Pará, Brazil
| | - Lorena Monteiro Gomes
- Laboratory of Human Cytogenetic, Institute of Biological Sciences, Federal University of Pará (UFPA), Belém-Pará, Brazil
| | - Rommel Mario Rodríguez Burbano
- Laboratory of Human Cytogenetic, Institute of Biological Sciences, Federal University of Pará (UFPA), Belém-Pará, Brazil
| | - Marcelo Oliveira Bahia
- Laboratory of Human Cytogenetic, Institute of Biological Sciences, Federal University of Pará (UFPA), Belém-Pará, Brazil
| |
Collapse
|
8
|
Khodayar MJ, Kalantari H, Khorsandi L, Rashno M, Zeidooni L. Upregulation of Nrf2-related cytoprotective genes expression by acetaminophen-induced acute hepatotoxicity in mice and the protective role of betaine. Hum Exp Toxicol 2020; 39:948-959. [PMID: 32081044 DOI: 10.1177/0960327120905962] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Overdose of acetaminophen (APAP) is the main reason for acute liver failure. Oxidative stress is associated with hepatotoxicity caused by APAP. Betaine is a methyl donor and S-adenosylmethionine precursor. The present study investigated the effect of betaine and the role of nuclear factor-erythroid-2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1) genes in hepatotoxicity induced by APAP in mice. In this study, male Naval Medical Research Institute (NMRI) mice were treated with 500 mg/kg of betaine for 5 days followed with a single dose of APAP 300 mg/kg on the fifth day. Biochemical, histological, immunohistochemical, Western blot, and real-time polymerase chain reaction (PCR) analyses were then conducted. The results of the present study showed that betaine pretreatment improved hepatotoxicity through the reduction of serum ALT and AST levels and ameliorating histopathological finding. Betaine pretreatment also increased glutathione level and decreased malondialdehyde level. Importantly, the results of immunohistochemical, Western blot and real-time PCR showed that the APAP increased the expression of the genes and proteins of Nrf2 and HO-1. While betaine decreased Nrf2 and HO-1 expression in comparison with the APAP group. The findings of this study demonstrated that the increased expression of Nrf2 and HO-1 genes and proteins by APAP is a compensatory mechanism to combat acute liver toxicity. While the protective effect of betaine against acute liver injury induced by APAP is independent on the Nrf2 and HO-1 genes but occurs via modifying cysteine supply as a precursor of glutathione in the transsulfuration pathway in the liver.
Collapse
Affiliation(s)
- M J Khodayar
- Toxicology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - H Kalantari
- Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - L Khorsandi
- Cellular and Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - M Rashno
- Cellular and Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Immunology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - L Zeidooni
- Toxicology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| |
Collapse
|
9
|
Intracerebral Hemorrhage: Blood Components and Neurotoxicity. Brain Sci 2019; 9:brainsci9110316. [PMID: 31717522 PMCID: PMC6896063 DOI: 10.3390/brainsci9110316] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 10/30/2019] [Accepted: 11/07/2019] [Indexed: 12/13/2022] Open
Abstract
Intracerebral hemorrhage (ICH) is a subtype of stroke which is associated with the highest mortality and morbidity rates of all strokes. Although it is a major public health problem, there is no effective treatment for ICH. As a consequence of ICH, various blood components accumulate in the brain parenchyma and are responsible for much of the secondary brain damage and ICH-induced neurological deficits. Therefore, the strategies that could attenuate the blood component-induced neurotoxicity and improve hematoma resolution are highly needed. The present article provides an overview of blood-induced brain injury after ICH and emphasizes the need to conduct further studies elucidating the mechanisms of hematoma resolution after ICH.
Collapse
|
10
|
Kolupaev YE, Karpets YV, Beschasniy SP, Dmitriev AP. Gasotransmitters and Their Role in Adaptive Reactions of Plant Cells. CYTOL GENET+ 2019. [DOI: 10.3103/s0095452719050098] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
11
|
Li N, Qiao H, Guo JF, Yang HY, Li XY, Li SL, Wang DX, Yang L. Preoperative hypoalbuminemia was associated with acute kidney injury in high-risk patients following non-cardiac surgery: a retrospective cohort study. BMC Anesthesiol 2019; 19:171. [PMID: 31477030 PMCID: PMC6719349 DOI: 10.1186/s12871-019-0842-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 08/26/2019] [Indexed: 02/07/2023] Open
Abstract
Background Acute kidney injury (AKI) is a common complication following non-cardiac surgery with adverse short- and long- term morbidity and mortality. Evidence shows that hypoalbuminemia is associated with increased AKI risk in patients with infectious diseases and cancer and following cardiac surgery and transplant surgery. However, little evidence is available on non-cardiac surgery population. Thus, we investigated the association between preoperative hypoalbuminemia and AKI following non-cardiac surgery. Methods We retrospectively assessed perioperative risk factors and preoperative serum albumin concentration in 729 consecutive adult patients who underwent non-cardiac surgery from July 1, 2017, to June 30, 2018. Each patient was categorized according to maximal Kidney Disease Improving Global Outcomes criteria based on creatinine changes and urine output within the first week after surgery. Multivariate Logistic regression models were used to analyze the association between preoperative hypoalbuminemia and postoperative AKI. Results Of 729 patients, 188 (25.8%) developed AKI. AKI incidence was higher in patients with preoperative serum albumin < 37.5 g/L than in those with preoperative serum albumin ≥37.5 g/L [35.9% (98/273) vs. 19.7% (90/456), P < 0.001]. Multivariate logistic regression analysis showed that preoperative serum albumin < 37.5 g/L (odds ratio 1.892; 95% confidence interval 1.238–2.891; P = 0.003) was independently associated with postoperative AKI. Patients with preoperative serum albumin < 37.5 g/L tended to have a higher but not significant ratio in AKI stage 2 (2.6% vs 1.1%, P = 0.144) and much higher ratio in AKI stage 3 (4.8% vs 0.7%, P < 0.001) than those with preoperative serum albumin ≥37.5 g/L. AKI patients had a higher in-hospital mortality rate [6.9% (13/188) vs. 0.2% (1/541), P < 0.001]. Kaplan-Meier analysis revealed that the cumulative survival rate decreased with increasing AKI severity (P < 0.001). Postoperative AKI was also associated with other worse outcomes, such as prolonged mechanical ventilation [53.4 (33.0, 73.8) vs 14.7 (11.1, 18.3) hours, P < 0.001], intensive care unit stay [4.0 (3.1, 4.9) vs 2.0 (1.8, 2.3) days, P < 0.001], postoperative hospital stay [17.8 (14.8, 20.9) vs 12.3 (11.3, 13.3) days, P < 0.001], and higher total cost [13,453 (8538, 20,228) vs 11,306 (6277, 16,400) dollars, P < 0.001]. Conclusions Preoperative hypoalbuminemia was independently associated with AKI after non-cardiac surgery, and postoperative AKI was associated with poor outcomes. Electronic supplementary material The online version of this article (10.1186/s12871-019-0842-3) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Nan Li
- Department of Critical Care Medicine, Peking University First Hospital, No.8 Xishiku Street, Xicheng District, Beijing, 100034, China.,Critical Care Nephrology Research Center, Peking University First Hospital, No.8 Xishiku Street, Xicheng District, Beijing, 100034, China
| | - Hong Qiao
- Department of Critical Care Medicine, Peking University First Hospital, No.8 Xishiku Street, Xicheng District, Beijing, 100034, China
| | - Jing-Fei Guo
- Department of Anesthesiology, Fuwai Hospital, Chinese Academy of Medical Sciences, No.167 North Lishi Road, Xicheng District, Beijing, 100037, China
| | - Hong-Yun Yang
- Clinical Laboratory, Peking University First Hospital, No.8 Xishiku Street, Xicheng District, Beijing, 100034, China
| | - Xue-Ying Li
- Department of Biostatistics, Peking University First Hospital, No.8 Xishiku Street, Xicheng District, Beijing, 100034, China
| | - Shuang-Ling Li
- Department of Critical Care Medicine, Peking University First Hospital, No.8 Xishiku Street, Xicheng District, Beijing, 100034, China. .,Critical Care Nephrology Research Center, Peking University First Hospital, No.8 Xishiku Street, Xicheng District, Beijing, 100034, China.
| | - Dong-Xin Wang
- Department of Critical Care Medicine, Peking University First Hospital, No.8 Xishiku Street, Xicheng District, Beijing, 100034, China
| | - Li Yang
- Critical Care Nephrology Research Center, Peking University First Hospital, No.8 Xishiku Street, Xicheng District, Beijing, 100034, China. .,Department of Nephrology, Peking University First Hospital, No.8 Xishiku Street, Xicheng District, Beijing, 100034, China.
| |
Collapse
|
12
|
Jiang Y, Xia M, Huang Q, Ding D, Li Y, Zhang Z, Zhang X. Protective effect of dexmedetomidine against organ dysfunction in a two-hit model of hemorrhage/resuscitation and endotoxemia in rats. ACTA ACUST UNITED AC 2019; 52:e7905. [PMID: 30810621 PMCID: PMC6393854 DOI: 10.1590/1414-431x20187905] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 11/11/2018] [Indexed: 11/22/2022]
Abstract
Dexmedetomidine (DEX), a selective agonist of α2-adrenergic receptors, has anti-inflammation properties and potential beneficial effects against trauma, shock, or infection. Therefore, this study aimed to investigate whether DEX might protect against multiple-organ dysfunction in a two-hit model of hemorrhage/resuscitation (HS) and subsequent endotoxemia. Eighty Wistar rats were randomized into four groups: NS (normal saline), HS/L (HS plus lipopolysaccharide), HS/L+D (HS/L plus dexmedetomidine), and HS/L+D+Y (HS/L+D plus yohimbine). Six hours after resuscitation, blood gas (PaO2) and serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), blood urine nitrogen (BUN), creatinine (Cr), TNF-α, IL-β, IL-6, IL-8, IL-10, and nitric oxide (NO) were measured. The histopathology was assayed by staining. Malondialdehyde (MDA) and superoxide dismutase (SOD) levels and heme oxygenase-1 (HO-1) were assayed. The PaO2 levels in HS/L rats were lower whereas the ALT, AST, BUN, Cr, TNF-α, IL-β, IL-6, IL-8, IL-10, and NO levels were higher compared to the control group. The HS/L+D increased PaO2 and further increased IL-10 and decreased ALT, AST, BUN, Cr, TNF-α, IL-β, IL-6, IL-8, and NO levels of the HS/L groups. In addition, the MDA in the HS/L groups increased whereas SOD activity decreased compared to the control group. Moreover, the HO-1 expression levels were increased by DEX administration in lung, liver, and kidney tissues. Lungs, livers, and kidneys of the HS/L group displayed significant damage, but such damage was attenuated in the HS/L+D group. All of the above-mentioned effects of DEX were partly reversed by yohimbine. DEX reduced multiple organ injury caused by HS/L in rats, which may be mediated, at least in part, by α2-adrenergic receptors.
Collapse
Affiliation(s)
- Yuanxu Jiang
- Department of Anesthesiology, Shenzhen People's Hospital, Shenzhen Anesthesiology Engineering Center, the Second Clinical Medical College, Jinan University, Shenzhen, China
| | - Mingzhu Xia
- Hubei Community Health Service Center, Luohu Hospital group, Shenzhen, China
| | - Qiang Huang
- Department of Anesthesiology, Shenzhen People's Hospital, Shenzhen Anesthesiology Engineering Center, the Second Clinical Medical College, Jinan University, Shenzhen, China
| | - Dengfeng Ding
- Department of Anesthesiology, Shenzhen People's Hospital, Shenzhen Anesthesiology Engineering Center, the Second Clinical Medical College, Jinan University, Shenzhen, China
| | - Yali Li
- Department of Anesthesiology, Shenzhen People's Hospital, Shenzhen Anesthesiology Engineering Center, the Second Clinical Medical College, Jinan University, Shenzhen, China
| | - Zhongjun Zhang
- Department of Anesthesiology, Shenzhen People's Hospital, Shenzhen Anesthesiology Engineering Center, the Second Clinical Medical College, Jinan University, Shenzhen, China
| | - Xueping Zhang
- Department of Anesthesiology, Shenzhen People's Hospital, Shenzhen Anesthesiology Engineering Center, the Second Clinical Medical College, Jinan University, Shenzhen, China
| |
Collapse
|
13
|
Lee DC, Choi H, Oh JM, Lee DH, Kim SW, Kim SW, Kim BG, Cho JH, Lee J. Protective effects of α-lipoic acid on cultured human nasal fibroblasts exposed to urban particulate matter. Int Forum Allergy Rhinol 2019; 9:638-647. [PMID: 30758914 DOI: 10.1002/alr.22296] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 12/21/2018] [Accepted: 01/06/2019] [Indexed: 12/25/2022]
Abstract
BACKGROUND Exposure to urban particulate matter (UPM) has been studied as a cause of various health problems. Although the association between UPM and the respiratory tract has been well studied, further research is required to characterize the effects of UPM on the upper respiratory tract. We investigated the effects of UPM-induced reactive oxygen species (ROS) production on cultured human nasal fibroblasts, as well as the protective effects of α-lipoic acid (ALA) on ROS production and the underlying signaling pathways involved in ROS inhibition. METHODS Human turbinate tissue specimens were collected from 6 patients. The effects of UPM on the viability of cultured nasal fibroblasts were determined. A fluorescent malondialdehyde assay was used to measure ROS levels. Real-time reverse transcription polymerase chain reaction was used to measure the messenger RNA levels of genes encoding Nrf2, the antioxidant response elements (AREs) (HO-1, NQO1), and the proinflammatory cytokines (interleukin-6 and interleukin-8) before and after ALA treatment. Western blotting analyses were used to measure nuclear and cytosolic Nrf2 and AREs. RESULTS UPM reduced cell viability and increased ROS expression in nasal fibroblasts. ALA treatment decreased ROS production in UPM-exposed fibroblasts via the Nrf2, HO-1, and NQO-1 pathways. Also, ALA treatment abrogated increases in the interleukin-6 and -8 levels induced by UPM in nasal fibroblasts. CONCLUSION UPM exposure resulted in increased ROS production in nasal fibroblasts. ALA treatment inhibited this increase via the Nrf2 pathway, suggesting that ALA may have a protective effect against rhinitis caused by ROS expression induced by exposure to UPM.
Collapse
Affiliation(s)
- Dong Chang Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyunsu Choi
- Clinical Research Institute, Daejeon St Mary's Hospital, Daejeon, Republic of Korea
| | - Jeong-Min Oh
- Clinical Research Institute, Daejeon St Mary's Hospital, Daejeon, Republic of Korea
| | - Do Hee Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sung Won Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Soo Whan Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Byung Guk Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jin Hee Cho
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Joohyung Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| |
Collapse
|
14
|
Mello SM, Soubhia PC, Silveira G, Corrêa-Neto NF, Lanaro R, Costa JL, Linardi A. Effect of Ritualistic Consumption of Ayahuasca on Hepatic Function in Chronic Users. J Psychoactive Drugs 2018; 51:3-11. [PMID: 30582439 DOI: 10.1080/02791072.2018.1557355] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Ayahuasca is a beverage obtained from decoctions of the liana Banisteriopsis caapi plus the shrub Psychotria viridis. This beverage contains a combination of monoamine oxidase inhibitors (harmine, harmaline, and tetrahydroharmine) and N,N-dimethyltryptamine, the main substance responsible for its visionary effect. The ritualistic use of ayahuasca is becoming a global phenomenon. Most members of ayahuasca churches consume this beverage throughout their life, and many reports have discussed the therapeutic potential of this beverage. Ayahuasca is consumed orally, and the liver, as the major organ for the metabolism and detoxification of xenobiotics absorbed from the alimentary tract, may be susceptible to injury by compounds present in the ayahuasca decoction. In this study, we evaluated biochemical parameters related to hepatic damage in the serum of 22 volunteers who consumed ayahuasca twice a month or more for at least one year. There was no significant alteration in the following parameters: alanine aminotransferase, aspartate aminotransferase, bilirubin, creatinine, urea, lactate dehydrogenase, alkaline phosphatase, and gamma glutamyl transferase. These findings indicate that chronic ayahuasca consumption in a religious context apparently does not affect hepatic function.
Collapse
Affiliation(s)
- Sueli Moreira Mello
- a Poison Control Center, Faculty of Medical Sciences , University of Campinas (UNICAMP) , Campinas , SP , Brazil
| | - Paula Christiane Soubhia
- a Poison Control Center, Faculty of Medical Sciences , University of Campinas (UNICAMP) , Campinas , SP , Brazil
| | - Gabriela Silveira
- a Poison Control Center, Faculty of Medical Sciences , University of Campinas (UNICAMP) , Campinas , SP , Brazil
| | - Nelson Francisco Corrêa-Neto
- b Department of Physiological Sciences , Santa Casa de São Paulo School of Medical Sciences , São Paulo , SP , Brazil
| | - Rafael Lanaro
- a Poison Control Center, Faculty of Medical Sciences , University of Campinas (UNICAMP) , Campinas , SP , Brazil
| | - José Luiz Costa
- c Faculty of Pharmaceutical Sciences , University of Campinas (UNICAMP) , Campinas , SP , Brazil
| | - Alessandra Linardi
- b Department of Physiological Sciences , Santa Casa de São Paulo School of Medical Sciences , São Paulo , SP , Brazil
| |
Collapse
|
15
|
Abdelrahman RS, Abdel-Rahman N. Dimethyl fumarate ameliorates acetaminophen-induced hepatic injury in mice dependent of Nrf-2/HO-1 pathway. Life Sci 2018; 217:251-260. [PMID: 30550888 DOI: 10.1016/j.lfs.2018.12.013] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 12/07/2018] [Accepted: 12/09/2018] [Indexed: 02/07/2023]
Abstract
Drug-induced liver toxicity is the most frequent cause of acute liver failure worldwide. Hepatotoxicity caused by acetaminophen (ACT) overdose is mediated by its metabolic product promoting oxidative stress and activation of inflammatory mediators. Nuclear factor erythroid-related factor-2 (Nrf-2) induces the release of cytoprotective enzymes in response to electrophilic or oxidative stress and is considered a promising therapeutic target. Dimethyl fumarate (DMF) is a potent activator of (Nrf-2), its anti-inflammatory and antioxidant properties of DMF have been highlighted recently. We designed this study to explore the effect of DMF (100 mg/kg, orally) administered once and twice on hepatotoxicity induced by acetaminophen (ACT, 500 mg/kg, i.p.) in mice. DMF administration enhanced ACT-induced parameters in liver function, inhibited apoptosis and ameliorated the antioxidant machinery and inflammatory markers in a Nrf-2-dependent fashion. DMF elevated Nrf-2 and HO-1 levels and ameliorated liver injury as indicated by lowered levels of serum aminotransferases, ALP, GGT and bilirubin levels. Hepatic (Bcl-2) was elevated whereas hepatic caspase-3, NFκ-B, TNF-α and MPO were reduced. Hepatic levels of GSH, SOD, MDA and NO were altered promoting the antioxidant machinery. Histological examination of liver has further supported these results. These findings suggest that DMF can be employed in the treatment ACT-induced liver injury acting primarily through targeting Nrf-2/HO-1 pathway.
Collapse
Affiliation(s)
- Rehab S Abdelrahman
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Noha Abdel-Rahman
- Department of Biochemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt.
| |
Collapse
|
16
|
Van Dingenen J, Steiger C, Zehe M, Meinel L, Lefebvre RA. Investigation of orally delivered carbon monoxide for postoperative ileus. Eur J Pharm Biopharm 2018; 130:306-313. [DOI: 10.1016/j.ejpb.2018.07.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 05/22/2018] [Accepted: 07/08/2018] [Indexed: 01/26/2023]
|
17
|
Amigo-Jiménez I, Bailón E, Aguilera-Montilla N, García-Marco JA, García-Pardo A. Gene expression profile induced by arsenic trioxide in chronic lymphocytic leukemia cells reveals a central role for heme oxygenase-1 in apoptosis and regulation of matrix metalloproteinase-9. Oncotarget 2018; 7:83359-83377. [PMID: 27829220 PMCID: PMC5347775 DOI: 10.18632/oncotarget.13091] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 10/21/2016] [Indexed: 12/20/2022] Open
Abstract
CLL remains an incurable disease in spite of the many new compounds being tested. Arsenic trioxide (ATO) induces apoptosis in all CLL cell types and could constitute an efficient therapy. To further explore this, we have studied the gene expression profile induced by ATO in CLL cells. ATO modulated many genes, largely involved in oxidative stress, being HMOX1 the most upregulated gene, also induced at the protein level. ATO also increased MMP-9, as we previously observed, both at the mRNA and protein level. Using specific inhibitors, qPCR analyses, and gene silencing approaches we demonstrate that upregulation of MMP-9 by ATO involved activation of the p38 MAPK/AP-1 signaling pathway. Moreover, gene silencing HMOX1 or inhibiting HMOX1 activity enhanced p38 MAPK phosphorylation and c-jun expression/activation, resulting in transcriptional upregulation of MMP-9. Overexpression of HMOX1 or enhancement of its activity, had the opposite effect. Cell viability analyses upon modulation of HMOX1 expression or activity demonstrated that HMOX1 had a pro-apoptotic role and enhanced the cytotoxic effect of ATO in CLL cells. We have therefore identified a new mechanism in which HMOX1 plays a central role in the response of CLL cells to ATO and in the regulation of the anti-apoptotic protein MMP-9. Thus, HMOX1 arises as a new therapeutic target in CLL and the combination of HMOX1 modulators with ATO may constitute an efficient therapeutic strategy in CLL.
Collapse
Affiliation(s)
- Irene Amigo-Jiménez
- Cellular and Molecular Medicine Department, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Elvira Bailón
- Cellular and Molecular Medicine Department, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Noemí Aguilera-Montilla
- Cellular and Molecular Medicine Department, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - José A García-Marco
- Molecular Cytogenetics Unit, Hematology Department, Instituto de Investigación Sanitaria Puerta de Hierro-Majadahonda, Madrid, Spain
| | - Angeles García-Pardo
- Cellular and Molecular Medicine Department, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| |
Collapse
|
18
|
Boivin A, Burban M, Clere-Jehl R, Le Borgne P, Merdji H, Auger C, Schini-Kerth V, Meziani F, Helms J. Docosahexaenoic acid, but not eicosapentaenoic acid, improves septic shock-induced arterial dysfunction in rats. PLoS One 2017; 12:e0189658. [PMID: 29261735 PMCID: PMC5738044 DOI: 10.1371/journal.pone.0189658] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 11/29/2017] [Indexed: 11/18/2022] Open
Abstract
Introduction Long chain n-3 fatty acid supplementation may modulate septic shock-induced host response to pathogen-induced sepsis. The composition of lipid emulsions for parenteral nutrition however remains a real challenge in intensive care, depending on their fatty acid content. Because they have not been assessed yet, we aimed at determining the respective effects of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) during septic shock-induced vascular dysfunction. Methods In a peritonitis-induced septic shock model, rats were infused with EPA, DHA, an EPA/DHA mixture or 5% dextrose (D5) during 22 hours. From H18, rats were resuscitated and monitored during 4 hours. At H22, plasma, aorta and mesenteric resistance arteries were collected to perform ex vivo experiments. Results We have shown that septic rats needed an active resuscitation with fluid challenge and norepinephrine treatment, while SHAM rats did not. In septic rats, norepinephrine requirements were significantly decreased in DHA and EPA/DHA groups (10.6±12.0 and 3.7±8.0 μg/kg/min respectively versus 17.4±19.3 μg/kg/min in D5 group, p<0.05) and DHA infusion significantly improved contractile response to phenylephrine through nitric oxide pathway inhibition. DHA moreover significantly reduced vascular oxidative stress and nitric oxide production, phosphorylated IκB expression and vasodilative prostaglandin production. DHA also significantly decreased polyunsaturated fatty acid pro-inflammatory mediators and significantly increased several anti-inflammatory metabolites. Conclusions DHA infusion in septic rats improved hemodynamic dysfunction through decreased vascular oxidative stress and inflammation, while EPA infusion did not have beneficial effects.
Collapse
Affiliation(s)
- Alexandra Boivin
- Université de Strasbourg (UNISTRA), Faculté de Médecine, Hôpitaux universitaires de Strasbourg, service de réanimation, nouvel hôpital civil, Strasbourg, France
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, Strasbourg, France
| | - Mélanie Burban
- Université de Strasbourg (UNISTRA), Faculté de Médecine, Hôpitaux universitaires de Strasbourg, service de réanimation, nouvel hôpital civil, Strasbourg, France
| | - Raphaël Clere-Jehl
- Université de Strasbourg (UNISTRA), Faculté de Médecine, Hôpitaux universitaires de Strasbourg, service de réanimation, nouvel hôpital civil, Strasbourg, France
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, Strasbourg, France
| | - Pierrick Le Borgne
- Service d'accueil des Urgences, Hôpital de Hautepierre, CHU de Strasbourg, 1, Strasbourg, France
| | - Hamid Merdji
- Université de Strasbourg (UNISTRA), Faculté de Médecine, Hôpitaux universitaires de Strasbourg, service de réanimation, nouvel hôpital civil, Strasbourg, France
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, Strasbourg, France
| | - Cyril Auger
- Université de Strasbourg (UNISTRA), Faculté de Médecine, Hôpitaux universitaires de Strasbourg, service de réanimation, nouvel hôpital civil, Strasbourg, France
| | - Valérie Schini-Kerth
- Université de Strasbourg (UNISTRA), Faculté de Médecine, Hôpitaux universitaires de Strasbourg, service de réanimation, nouvel hôpital civil, Strasbourg, France
| | - Ferhat Meziani
- Université de Strasbourg (UNISTRA), Faculté de Médecine, Hôpitaux universitaires de Strasbourg, service de réanimation, nouvel hôpital civil, Strasbourg, France
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, Strasbourg, France
| | - Julie Helms
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, Strasbourg, France
- Université de Strasbourg, INSERM, EFS Grand Est, BPPS UMR-S 949, FMTS, Strasbourg, France
- * E-mail:
| |
Collapse
|
19
|
Qi X, Zhang H, Xue T, Yang B, Deng M, Wang J. Down-regulation of cellular protein heme oxygenase-1 inhibits proliferation of avian influenza virus H9N2 in chicken oviduct epithelial cells. J Gen Virol 2017; 99:36-43. [PMID: 29219807 DOI: 10.1099/jgv.0.000986] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The pathogenesis of H9N2 subtype avian influenza virus (AIV) infection in hens is often related to oviduct tissue damage. Our previous study suggested that H9N2 AIV induces cellular apoptosis by activating reactive oxygen species (ROS) accumulation and mitochondria-mediated apoptotic signalling in chicken oviduct epithelial cells (COECs). Heme oxygenase-1 (HO-1) is an inducible enzyme that exerts protective effects against oxidative stress and activated HO-1 was recently shown to have antiviral activity. To study the potential involvement of HO-1 in H9N2 AIV proliferation, the role of its expression in H9N2-infected COECs was further investigated. Our results revealed that H9N2 AIV infection significantly up-regulated the expression of HO-1 and that HO-1 down-regulation by ZnPP, a classical inhibitor of HO-1, could inhibit H9N2 AIV replication in COECs. Similarly, the small interfering RNA (siRNA)-mediated knockdown of HO-1 also markedly decreased the virus production in H9N2-infected COECs. In contrast, adenoviral-mediated over-expression of HO-1 concomitantly promoted H9N2 AIV replication. Taken together, our study demonstrated the involvement of HO-1 in AIV H9N2 proliferation, and these findings suggested that HO-1 is a potential target for inhibition of AIV H9N2 replication.
Collapse
Affiliation(s)
- Xuefeng Qi
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, PR China
| | - Huizhu Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, PR China
| | - Tianxia Xue
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, PR China
| | - Bo Yang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, PR China
| | - Meiyu Deng
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, PR China
| | - Jingyu Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, PR China.,Shaanxi Province Engineering Technology Research Center For Veterinary Biological Products, Yangling 712100, PR China
| |
Collapse
|
20
|
Uzelac JJ, Stanić M, Krstić D, Čolović M, Djurić D. Effects of homocysteine and its related compounds on oxygen consumption of the rat heart tissue homogenate: the role of different gasotransmitters. Mol Cell Biochem 2017; 444:143-148. [DOI: 10.1007/s11010-017-3238-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 11/24/2017] [Indexed: 10/18/2022]
|
21
|
Cholestatic Alterations in the Critically Ill: Some New Light on an Old Problem. Chest 2017; 153:733-743. [PMID: 28847548 DOI: 10.1016/j.chest.2017.08.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 07/10/2017] [Accepted: 08/14/2017] [Indexed: 12/12/2022] Open
Abstract
Liver dysfunction and jaundice are traditionally viewed as late features of sepsis and other critical illnesses and are associated with a complicated ICU stay. However, study results suggest that cholestatic alterations occur early in the course of critical illnesses, perceived only as minor abnormalities in routinely used biochemical liver tests. Inflammation-induced alterations in the transport of bile acids (BAs) appear to drive BAs and bilirubin toward the systemic circulation. Ongoing BA synthesis with an, at least partial, loss of feedback inhibition further contributes to elevated circulating BAs and bilirubin. To what extent these changes reflect a biochemical epiphenomenon, true illness-induced liver dysfunction, or a beneficial and adaptive response to illness should be investigated further. Because of the lack of specificity of standard laboratory tests, especially in the context of a complex systemic condition such as critical illness, identifying true cholestatic liver dysfunction remains a great challenge. However, high levels of cholestatic markers that are sustained in patients with prolonged critical illness almost always indicate a complicated illness course and should be monitored closely. Preventing cholestatic liver dysfunction comprises minimizing inflammation and hypoxia in the liver and preventing hyperglycemia, avoiding early use of parenteral nutrition, and reducing the administration of avoidable drugs. Future research on the effects of BAs and on modulating underlying drivers of cholestasis induced by critical illness is warranted as this could open perspectives for a targeted diagnostic approach and ultimately for novel therapies to improve outcome.
Collapse
|
22
|
Involvement of HSP70 and HO-1 in the protective effects of raloxifene on multiple organ dysfunction syndrome by endotoxemia in ovariectomized rats. Menopause 2017; 24:959-969. [DOI: 10.1097/gme.0000000000000864] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
23
|
Brg1-mediated Nrf2/HO-1 pathway activation alleviates hepatic ischemia-reperfusion injury. Cell Death Dis 2017; 8:e2841. [PMID: 28569786 PMCID: PMC5520895 DOI: 10.1038/cddis.2017.236] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Revised: 04/20/2017] [Accepted: 04/26/2017] [Indexed: 12/11/2022]
Abstract
Cytoprotective gene heme oxygenase 1 (HO-1) could be induced by nuclear factor E2-related factor 2 (Nrf2) nuclear translocation. The purpose of this study was to determine the role of Brahma-related gene 1 (Brg1), a catalytic subunit of SWI2/SNF2-like chromatin remodeling complexes, in Nrf2/HO-1 pathway activation during hepatic ischemia–reperfusion (HIR). Our results showed that hepatic Brg1 was inhibited during early HIR while Brg1 overexpression reduced oxidative injury in CMV-Brg1 mice subjected to HIR. Moreover, promoter-driven luciferase assay showed that overexpression of Brg1 by adenovirus transfection in AML12 cells selectively enhanced HO-1 gene expression after hypoxia/reoxygenation (H/R) treatment but did not affect the other Nrf2 target gene NQO1. Furthermore, inhibition of HO-1 by the selective HO-1 inhibitor zinc protoporphyria could partly reverse the hepatic protective effects of Brg1 overexpression while HO-1-Adv attenuated AML12 cells H/R damage. Further, chromatin immunoprecipitation analysis revealed that Brg1 overexpression, which could significantly increase the recruitment of Brg1 protein to HO-1 but not NQO1 promoter, was recruited by Nrf2 to the HO-1 regulatory regions in AML12 hepatocytes subjected to H/R. In conclusion, our results demonstrated that restoration of Brg1 during reperfusion could enhance Nrf2-mediated inducible expression of HO-1 during HIR to effectively increase antioxidant ability to combat against hepatocytes damage.
Collapse
|
24
|
Abstract
SIGNIFICANCE The family of gasotransmitter molecules, nitric oxide (NO), carbon monoxide (CO), and hydrogen sulfide (H2S), has emerged as an important mediator of numerous cellular signal transduction and pathophysiological responses. As such, these molecules have been reported to influence a diverse array of biochemical, molecular, and cell biology events often impacting one another. Recent Advances: Discrete regulation of gasotransmitter molecule formation, movement, and reaction is critical to their biological function. Due to the chemical nature of these molecules, they can move rapidly throughout cells and tissues acting on targets through reactions with metal groups, reactive chemical species, and protein amino acids. CRITICAL ISSUES Given the breadth and complexity of gasotransmitter reactions, this field of research is expanding into exciting, yet sometimes confusing, areas of study with significant promise for understanding health and disease. The precise amounts of tissue and cellular gasotransmitter levels and where they are formed, as well as how they react with molecular targets or themselves, all remain poorly understood. FUTURE DIRECTIONS Elucidation of specific molecular targets, characteristics of gasotransmitter molecule heterotypic interactions, and spatiotemporal formation and metabolism are all important to better understand their true pathophysiological importance in various organ systems. Antioxid. Redox Signal. 26, 936-960.
Collapse
Affiliation(s)
- Gopi K Kolluru
- 1 Department of Pathology, LSU Health Sciences Center-Shreveport , Shreveport, Louisiana
| | - Xinggui Shen
- 1 Department of Pathology, LSU Health Sciences Center-Shreveport , Shreveport, Louisiana
| | - Shuai Yuan
- 2 Department of Cellular Biology and Anatomy, LSU Health Sciences Center-Shreveport , Shreveport, Louisiana
| | - Christopher G Kevil
- 1 Department of Pathology, LSU Health Sciences Center-Shreveport , Shreveport, Louisiana.,2 Department of Cellular Biology and Anatomy, LSU Health Sciences Center-Shreveport , Shreveport, Louisiana.,3 Department of Molecular and Cellular Physiology, LSU Health Sciences Center-Shreveport , Shreveport, Louisiana
| |
Collapse
|
25
|
Kovacsics CE, Gill AJ, Ambegaokar SS, Gelman BB, Kolson DL. Degradation of heme oxygenase-1 by the immunoproteasome in astrocytes: A potential interferon-γ-dependent mechanism contributing to HIV neuropathogenesis. Glia 2017; 65:1264-1277. [PMID: 28543773 DOI: 10.1002/glia.23160] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 03/28/2017] [Accepted: 04/07/2017] [Indexed: 12/16/2022]
Abstract
Induction of the detoxifying enzyme heme oxygenase-1 (HO-1) is a critical protective host response to cellular injury associated with inflammation and oxidative stress. We previously found that HO-1 protein expression is reduced in brains of HIV-infected individuals with HIV-associated neurocognitive disorders (HAND) and in HIV-infected macrophages, where this reduction associates with enhanced glutamate release and neurotoxicity. Because HIV-infected macrophages are a small component of the cellular content of the brain, the reduction of macrophage HO-1 expression likely accounts for a small portion of brain HO-1 loss in HIV infection. We therefore investigated the contribution of astrocytes, the major pool of brain HO-1. We identified immunoproteasome-mediated HO-1 degradation in astrocytes as a second possible mechanism of brain HO-1 loss in HIV infection. We demonstrate that prolonged exposure of human fetal astrocytes to interferon-gamma (IFNγ), an HIV-associated CNS immune activator, selectively reduces expression of HO-1 protein without a concomitant reduction in HO-1 RNA, increases expression of immunoproteasome subunits, and decreases expression of constitutive proteasome subunits, consistent with a shift towards increased immunoproteasome activity. In HIV-infected brain HO-1 protein reduction also associates with increased HO-1 RNA expression and increased immunoproteasome expression. Finally, we show that IFNγ treatment of astrocytic cells reduces HO-1 protein half-life in a proteasome-dependent manner. Our data thus suggest unique causal links among HIV infection, IFNγ-mediated immunoproteasome induction, and enhanced HO-1 degradation, which likely contribute to neurocognitive impairment in HAND. Such IFNγ-mediated HO-1 degradation should be further investigated for a role in neurodegeneration in inflammatory brain conditions. BRIEF SUMMARY Kovacsics et al. identify immunoproteasome degradation of heme oxygenase-1 (HO-1) in interferon gamma-stimulated astrocytes as a plausible mechanism for the observed loss of HO-1 protein expression in the brains of HIV-infected individuals, which likely contributes to the neurocognitive impairment in HIV-associated neurocognitive disorders.
Collapse
Affiliation(s)
- Colleen E Kovacsics
- Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, 19104
| | - Alexander J Gill
- Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, 19104
| | - Surendra S Ambegaokar
- Department of Botany & Microbiology, Robbins Program in Neuroscience, Ohio Wesleyan University, Delaware, Ohio, 43015
| | - Benjamin B Gelman
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, 77555
| | - Dennis L Kolson
- Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, 19104
| |
Collapse
|
26
|
Ma T, Chen T, Li P, Ye Z, Zhai W, Jia L, Chen W, Sun A, Huang Y, Wei S, Li Z. Heme oxygenase-1 (HO-1) protects human lens epithelial cells (SRA01/04) against hydrogen peroxide (H2O2)-induced oxidative stress and apoptosis. Exp Eye Res 2016; 146:318-329. [DOI: 10.1016/j.exer.2016.02.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 02/02/2016] [Accepted: 02/29/2016] [Indexed: 02/07/2023]
|
27
|
Kayano ACAV, Dos-Santos JCK, Bastos MF, Carvalho LJ, Aliberti J, Costa FTM. Pathophysiological Mechanisms in Gaseous Therapies for Severe Malaria. Infect Immun 2016; 84:874-882. [PMID: 26831465 PMCID: PMC4807480 DOI: 10.1128/iai.01404-15] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Over 200 million people worldwide suffer from malaria every year, a disease that causes 584,000 deaths annually. In recent years, significant improvements have been achieved on the treatment of severe malaria, with intravenous artesunate proving superior to quinine. However, mortality remains high, at 8% in children and 15% in adults in clinical trials, and even worse in the case of cerebral malaria (18% and 30%, respectively). Moreover, some individuals who do not succumb to severe malaria present long-term cognitive deficits. These observations indicate that strategies focused only on parasite killing fail to prevent neurological complications and deaths associated with severe malaria, possibly because clinical complications are associated in part with a cerebrovascular dysfunction. Consequently, different adjunctive therapies aimed at modulating malaria pathophysiological processes are currently being tested. However, none of these therapies has shown unequivocal evidence in improving patient clinical status. Recently, key studies have shown that gaseous therapies based mainly on nitric oxide (NO), carbon monoxide (CO), and hyperbaric (pressurized) oxygen (HBO) alter vascular endothelium dysfunction and modulate the host immune response to infection. Considering gaseous administration as a promising adjunctive treatment against severe malaria cases, we review here the pathophysiological mechanisms and the immunological aspects of such therapies.
Collapse
Affiliation(s)
- Ana Carolina A V Kayano
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas, Campinas, SP, Brazil
| | - João Conrado K Dos-Santos
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas, Campinas, SP, Brazil
| | - Marcele F Bastos
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas, Campinas, SP, Brazil
| | - Leonardo J Carvalho
- Laboratory of Malaria Research, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, RJ, Brazil
| | - Júlio Aliberti
- Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Fabio T M Costa
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas, Campinas, SP, Brazil
| |
Collapse
|
28
|
Sharma P, Bansal A, Sharma PC. RNA-seq-based transcriptome profiling reveals differential gene expression in the lungs of Sprague-Dawley rats during early-phase acute hypobaric hypoxia. Mol Genet Genomics 2015; 290:2225-40. [PMID: 26050109 DOI: 10.1007/s00438-015-1064-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2014] [Accepted: 05/02/2015] [Indexed: 12/19/2022]
Abstract
Individuals subjected to hypobaric hypoxia at high altitudes may exhibit differential physiological responses in terms of susceptibility and tolerance to the development of hypoxia-related disorders. We studied early-phase gene expression in the lungs of Sprague-Dawley rats exhibiting such differential physiological responses after exposure to acute hypobaric hypoxia for 1 h at a simulated altitude of 9144 m. RNA-seq transcriptome profiling of lung tissues revealed differential gene expression in tolerant and susceptible groups, subsequently validated by qRT-PCR for ten selected differentially expressed genes. The gene expression pattern indicated hypometabolism and negative regulation of vasoconstriction in all groups except susceptible rats, coupled with altered MAPK, p53 and JAK-STAT signaling. Upregulation of early-phase response genes including Dusp1 (dual specificity phosphatase), Cdkn1a (cyclin-dependent kinase inhibitor 1A), Txnip (thioredoxin-interacting protein), Rgs1 (regulator of G-protein signaling 1) and Rgs2 (regulator of G-protein signaling 2) in susceptible rats indicated a progression toward growth arrest and apoptosis. Enhanced expression of cell adhesion molecules, wound healing and repair bioprocesses was observed in tolerant males. Upregulated Kcnj15 (potassium inwardly rectifying channel subfamily j membrane 15) and Vsig4 (V-set and Ig domain containing 4) variants in tolerant females suggested adaptation to hypoxia possibly by fluid reabsorption to avoid edematous conditions and suppression of T cell proliferation to avoid acute lung inflammation. Our study might help in understanding the molecular-physiological mechanisms associated with progressive damage in the lung tissues of susceptible and tissue-protective measures in tolerant rats during acute hypobaric hypoxia.
Collapse
Affiliation(s)
- Priyanka Sharma
- University School of Biotechnology (USBT), Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| | - Anju Bansal
- Experimental Biology Division, Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Timarpur, Lucknow Road, New Delhi, India
| | - Prakash Chand Sharma
- University School of Biotechnology (USBT), Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India.
| |
Collapse
|
29
|
Wiedermann CJ, Joannidis M. Nephroprotective Potential of Human Albumin Infusion: A Narrative Review. Gastroenterol Res Pract 2015; 2015:912839. [PMID: 26136776 PMCID: PMC4475554 DOI: 10.1155/2015/912839] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 05/24/2015] [Accepted: 05/26/2015] [Indexed: 12/13/2022] Open
Abstract
Albumin infusion improves renal function in cirrhosis; however, mechanisms are incompletely understood. In clinical practice, human albumin is used in various intensive care unit indications to deal with a wide range of problems, from volume replacement in hypovolemic shock, or sepsis, to treatment of ascites in patients with liver cirrhosis. Against the background of the results of recent studies on the use of human albumin in septic patients, the importance of the natural colloid in these critically ill patients is being redefined. In addition to the hemodynamic effects of administration of human albumin impacting on sympathetic tone, attention is being paid to other effects in which its pharmacodynamics is associated with the physiological importance of endogenous albumin. The morbidity and mortality data discussed in this paper support the importance of both the hemodynamic and the pharmacological effects of the administration of human albumin in various indications. The contribution that human albumin could make towards the maintenance of renal function in the course and treatment of severe sepsis and cirrhosis of the liver is the subject of this narrative review.
Collapse
Affiliation(s)
- Christian J. Wiedermann
- Department of Internal Medicine, Central Hospital of Bolzano/Bozen, Lorenz-Böhler Street 5, 39100 Bolzano, Italy
- Interdisciplinary Medical Research Institute South Tyrol (IMREST), Lorenz-Böhler Street 5, 39100 Bolzano, Italy
| | - Michael Joannidis
- Division of Intensive Care and Emergency Medicine, Department of Internal Medicine I, Medical University of Innsbruck, Anich Street 35, 6020 Innsbruck, Austria
| |
Collapse
|
30
|
Askenazi DJ, Halloran B, Patil N, Keeling S, Saeidi B, Koralkar R, Ambalavanan N. Genetic polymorphisms of heme-oxygenase 1 (HO-1) may impact on acute kidney injury, bronchopulmonary dysplasia, and mortality in premature infants. Pediatr Res 2015; 77:793-8. [PMID: 25751573 PMCID: PMC4439308 DOI: 10.1038/pr.2015.44] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 11/19/2014] [Indexed: 12/18/2022]
Abstract
BACKGROUND Heme oxygenase 1 (HO1) catalyzes heme degradation, and offers protection for several organs, including the kidney. Genetic polymorphisms of HO-1 are associated with poor clinical outcomes in several populations. METHODS POPULATION We prospectively enrolled 117 premature infants (birth weight ≤1,200 g or postgestational age ≤31 wk) and evaluated two DNA genetic variants proximal to the promoter region of HO-1 (GT(n) repeats, and -413T>A SNP). We evaluated how these polymorphisms affect two clinical outcomes: (i) Acute Kidney Injury (AKI)-rise in serum creatinine (SCr) ≥ 0.3 mg/dl or ≥ 150-200% from lowest previous value, (ii) the composite of mortality and bronchopulmonary dysplasia (BPD) defined as receipt of oxygen at 36 wk postmenstrual age. RESULTS AKI occurred in 34/117 (29%) of neonates; 12/117 (10%) died; 29/105 (28%) survivors had BPD. Neonates with TT genotype at 413T>A before the HO-1 promoter had higher rates of AKI (P < 0.05). There was no difference in number of GT(n) repeats and clinical outcomes. CONCLUSION We did not find an association between the GT(n) tandem repeat of HO-1 and AKI nor BPD/mortality. However, infants with TT genotype of the 413T>A genetic alteration had lower incidence of AKI. Further studies using larger cohorts are needed to better understand these relationships.
Collapse
Affiliation(s)
- David J Askenazi
- Divisions of Pediatric Nephrology and Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Brian Halloran
- Divisions of Pediatric Nephrology and Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Neha Patil
- Divisions of Pediatric Nephrology and Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Susan Keeling
- Divisions of Pediatric Nephrology and Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Behtash Saeidi
- Divisions of Pediatric Nephrology and Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Rajesh Koralkar
- Divisions of Pediatric Nephrology and Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Namasivayam Ambalavanan
- Divisions of Pediatric Nephrology and Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama, United States
| |
Collapse
|
31
|
Noh JR, Kim YH, Hwang JH, Choi DH, Kim KS, Oh WK, Lee CH. Sulforaphane protects against acetaminophen-induced hepatotoxicity. Food Chem Toxicol 2015; 80:193-200. [PMID: 25818464 DOI: 10.1016/j.fct.2015.03.020] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 02/09/2015] [Accepted: 03/18/2015] [Indexed: 01/27/2023]
Abstract
Oxidative stress is closely associated with acetaminophen (APAP)-induced toxicity. Heme oxygenase-1 (HO-1), an antioxidant defense enzyme, has been shown to protect against oxidant-induced tissue injury. This study investigated whether sulforaphane (SFN), as a HO-1 inducer, plays a protective role against APAP hepatotoxicity in vitro and in vivo. Pretreatment of primary hepatocyte with SFN induced nuclear factor E2-factor related factor (Nrf2) target gene expression, especially HO-1 mRNA and protein expression, and suppressed APAP-induced glutathione (GSH) depletion and lipid peroxidation, which eventually leads to hepatocyte cell death. A comparable effect was observed in mice treated with APAP. Mice were treated with 300 mg/kg APAP 30 min after SFN (5 mg/kg) administration and were then sacrificed after 6 h. APAP alone caused severe liver injuries as characterized by increased plasma AST and ALT levels, GSH depletion, apoptosis, and 4-hydroxynonenal (4-HNE) formations. This APAP-induced liver damage was significantly attenuated by pretreatment with SFN. Furthermore, while hepatic reactive oxygen species (ROS) levels were increased by APAP exposure, pretreatment with SFN completely blocked ROS formation. These results suggest that SFN plays a protective role against APAP-mediated hepatotoxicity through antioxidant effects mediated by HO-1 induction. SFN has preventive action in oxidative stress-mediated liver injury.
Collapse
Affiliation(s)
- Jung-Ran Noh
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, University of Science and Technology (UST), 125 Gwahak-ro, Yuseong-gu, Daejeon 305-806, Republic of Korea
| | - Yong-Hoon Kim
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, University of Science and Technology (UST), 125 Gwahak-ro, Yuseong-gu, Daejeon 305-806, Republic of Korea
| | - Jung Hwan Hwang
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, University of Science and Technology (UST), 125 Gwahak-ro, Yuseong-gu, Daejeon 305-806, Republic of Korea
| | - Dong-Hee Choi
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, University of Science and Technology (UST), 125 Gwahak-ro, Yuseong-gu, Daejeon 305-806, Republic of Korea
| | - Kyoung-Shim Kim
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, University of Science and Technology (UST), 125 Gwahak-ro, Yuseong-gu, Daejeon 305-806, Republic of Korea
| | - Won-Keun Oh
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Chul-Ho Lee
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, University of Science and Technology (UST), 125 Gwahak-ro, Yuseong-gu, Daejeon 305-806, Republic of Korea.
| |
Collapse
|
32
|
Carbon monoxide-releasing molecule-A1 (CORM-A1) improves clinical signs of experimental autoimmune uveoretinitis (EAU) in rats. Clin Immunol 2015; 157:198-204. [PMID: 25701800 DOI: 10.1016/j.clim.2015.02.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 02/03/2015] [Accepted: 02/04/2015] [Indexed: 11/20/2022]
Abstract
Uveitis is a sight-threatening inflammatory disease of the eye which represents the third leading cause of blindness in the developed countries. The conventional pharmacological treatment includes corticosteroids and immunosuppressive agents, which are limited by their side effects. New therapeutic strategies are thus strongly needed. Exogenously-administered carbon monoxide (CO) may represent an effective treatment for conditions characterized by a dysregulated inflammatory response. Carbon monoxide-releasing molecules (CORMs) are a novel group of compounds capable of carrying and liberating controlled quantities of CO. Among CORMs, CORM-A1 represents the first example of water soluble CO releaser. We show here that CORM-A1 under a late prophylactic regime is able to significantly ameliorate the natural course of experimental autoimmune uveoretinitis, a rodent model of immunoinflammatory posterior uveitis. The present study strongly supports the development of CORM-A1 as a potential new drug for treatment of patients with non-infectious posterior uveitis.
Collapse
|
33
|
Role of Nrf2/ARE pathway in protective effect of electroacupuncture against endotoxic shock-induced acute lung injury in rabbits. PLoS One 2014; 9:e104924. [PMID: 25115759 PMCID: PMC4130631 DOI: 10.1371/journal.pone.0104924] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 07/15/2014] [Indexed: 12/03/2022] Open
Abstract
NF-E2 related factor 2 (Nrf2) is a major transcription factor and acts as a key regulator of antioxidant genes to exogenous stimulations. The aim of current study was to determine whether Nrf2/ARE pathway is involved in the protective effect of electroacupuncture on the injured lung in a rabbit model of endotoxic shock. A dose of lipopolysaccharide (LPS) 5 mg/kg was administered intravenously to replicate the model of acute lung injury induced by endotoxic shock. Electroacupuncture pretreatment was handled bilaterally at Zusanli and Feishu acupoints for five consecutive days while sham electroacupuncture punctured at non-acupoints. Fourty anesthetized New England male rabbits were randomized into normal control group (group C), LPS group (group L), electroacupuncture + LPS group (group EL) and sham electroacupuncture + LPS (group SEL). At 6 h after LPS administration, the animals were sacrificed and the blood samples were collected for biochemical measurements. The lungs were removed for calculation of wet-to-dry weight ratios (W/D), histopathologic examination, determination of heme oxygenase (HO)-1 protein and mRNA, Nrf2 total and nucleoprotein, as well as Nrf2 mRNA expression, and evaluation of the intracellular distribution of Nrf2 nucleoprotein. LPS caused extensive morphologic lung damage, which was lessened by electroacupuncture treatment. Besides, lung W/D ratios were significantly decreased, the level of malondialdehyde was inhibited, plasma levels of TNF-α and interleukin-6 were decreased, while the activities of superoxide dismutase, glutathione peroxidase and catalase were enhanced in the electroacupucnture treated animals. In addition, electroacupuncture stimulation distinctly increased the expressions of HO-1 and Nrf2 protein including Nrf2 total protein and nucleoprotein as well as mRNA in lung tissue, while these effects were blunted in the sham electroacupuncture group. We concluded that electroacupuncture treatment at ST36 and BL13 effectively attenuates lung injury in a rabbit model of endotoxic shock through activation of Nrf2/ARE pathway and following up-regulation of HO-1 expression.
Collapse
|
34
|
Babu D, Motterlini R, Lefebvre RA. CO and CO-releasing molecules (CO-RMs) in acute gastrointestinal inflammation. Br J Pharmacol 2014; 172:1557-73. [PMID: 24641722 DOI: 10.1111/bph.12632] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Revised: 01/30/2014] [Accepted: 02/05/2014] [Indexed: 12/13/2022] Open
Abstract
Carbon monoxide (CO) is enzymatically generated in mammalian cells alongside the liberation of iron and the production of biliverdin and bilirubin. This occurs during the degradation of haem by haem oxygenase (HO) enzymes, a class of ubiquitous proteins consisting of constitutive and inducible isoforms. The constitutive HO2 is present in the gastrointestinal tract in neurons and interstitial cells of Cajal and CO released from these cells might contribute to intestinal inhibitory neurotransmission and/or to the control of intestinal smooth muscle cell membrane potential. On the other hand, increased expression of the inducible HO1 is now recognized as a beneficial response to oxidative stress and inflammation. Among the products of haem metabolism, CO appears to contribute primarily to the antioxidant and anti-inflammatory effects of the HO1 pathway explaining the studies conducted to exploit CO as a possible therapeutic agent. This article reviews the effects and, as far as known today, the mechanism(s) of action of CO administered either as CO gas or via CO-releasing molecules in acute gastrointestinal inflammation. We provide here a comprehensive overview on the effect of CO in experimental in vivo models of post-operative ileus, intestinal injury during sepsis and necrotizing enterocolitis. In addition, we will analyse the in vitro data obtained so far on the effect of CO on intestinal epithelial cell lines exposed to cytokines, considering the important role of the intestinal mucosa in the pathology of gastrointestinal inflammation.
Collapse
Affiliation(s)
- D Babu
- Heymans Institute of Pharmacology, Ghent University, Gent, Belgium
| | | | | |
Collapse
|
35
|
Maignan M, Briot R, Romanini D, Gennai S, Hazane-Puch F, Brouta A, Debaty G, Ventrillard I. Real-time measurements of endogenous carbon monoxide production in isolated pig lungs. JOURNAL OF BIOMEDICAL OPTICS 2014; 19:047001. [PMID: 24699633 DOI: 10.1117/1.jbo.19.4.047001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Accepted: 03/10/2014] [Indexed: 06/03/2023]
Abstract
Ischemia-reperfusion injuries are a critical determinant of lung transplantation success. The endogenous production of carbon monoxide (CO) is triggered by ischemia-reperfusion injuries. Our aim was, therefore, to assess the feasibility of exhaled CO measurements during the ex vivo evaluation of lungs submitted to ischemia-reperfusion injuries. Five pigs were euthanized and their lungs removed after pneumoplegia. After cold storage (30 min, 4°C), the lungs were connected to an extracorporeal membrane oxygenation circuit, slowly warmed-up, and ventilated. At the end of a 45-min steady state, CO measurements were performed by optical-feedback cavity-enhanced absorption spectroscopy, a specific laser-based technique for noninvasive and real-time low gas concentration measurements. Exhaled CO concentration from isolated lungs reached 0.45±0.19 ppmv and was above CO concentration in ambient air and in medical gas. CO variations peaked during the expiratory phase. Changes in CO concentration in ambient air did not alter CO concentrations in isolated lungs. Exhaled CO level was also found to be uncorrelated to heme oxygenase (HO-1) gene expression. These results confirm the feasibility of accurate and real-time CO measurement in isolated lungs. The presented technology could help establishing the exhaled CO concentration as a biomarker of ischemia-reperfusion injury in ex vivo lung perfusion.
Collapse
Affiliation(s)
- Maxime Maignan
- Centre Hospitalier Universitaire Michallon, Emergency Department and Mobile Intensive Care Unit, 38043 Grenoble Cedex 09, FrancebUniversité Joseph Fourier Grenoble 1, /CNRS/TIMC-IMAG UMR 5525/PRETA Team, Grenoble F-38041, France
| | - Raphael Briot
- Centre Hospitalier Universitaire Michallon, Emergency Department and Mobile Intensive Care Unit, 38043 Grenoble Cedex 09, FrancebUniversité Joseph Fourier Grenoble 1, /CNRS/TIMC-IMAG UMR 5525/PRETA Team, Grenoble F-38041, France
| | - Daniel Romanini
- Université Grenoble 1/CNRS, LiPhy UMR 5588, Grenoble F-38041, France
| | - Stephane Gennai
- Centre Hospitalier Universitaire Michallon, Emergency Department and Mobile Intensive Care Unit, 38043 Grenoble Cedex 09, FrancebUniversité Joseph Fourier Grenoble 1, /CNRS/TIMC-IMAG UMR 5525/PRETA Team, Grenoble F-38041, France
| | - Florence Hazane-Puch
- Centre Hospitalier Universitaire de Grenoble, Institut de Biologie et de Pathologie, Département de Biochimie, Toxicologie et Pharmacologie, Unité de Biochimie Hormonale et Nutritionnelle, CS 10217, 38043 Grenoble, France
| | - Angelique Brouta
- Université Joseph Fourier Grenoble 1, /CNRS/TIMC-IMAG UMR 5525/PRETA Team, Grenoble F-38041, France
| | - Guillaume Debaty
- Centre Hospitalier Universitaire Michallon, Emergency Department and Mobile Intensive Care Unit, 38043 Grenoble Cedex 09, FrancebUniversité Joseph Fourier Grenoble 1, /CNRS/TIMC-IMAG UMR 5525/PRETA Team, Grenoble F-38041, France
| | - Irene Ventrillard
- Université Grenoble 1/CNRS, LiPhy UMR 5588, Grenoble F-38041, France
| |
Collapse
|
36
|
A new tellurium-containing amphiphilic molecule induces apoptosis in HCT116 colon cancer cells. Biochim Biophys Acta Gen Subj 2014; 1840:1808-16. [PMID: 24530428 DOI: 10.1016/j.bbagen.2014.02.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 01/31/2014] [Accepted: 02/04/2014] [Indexed: 12/25/2022]
Abstract
BACKGROUND Chalcogen-based redox modulators over the years have attracted considerable attention as anti-cancer agents. New selenium- and tellurium-containing compounds with a polar head group and aryl-groups of various lengths have recently been reported as biologically active in several organisms. In the present study, we used the most active of the tellurium compound DP41, and its selenium counterpart DP31 to investigate their effects on the human cancer cell line HCT116. METHODS Cells were treated with DP41 or DP31 and the formation of superoxide radicals was determined using dihydroethidium. Cell cycle analysis and apoptosis was determined by cytofluorimetry. Proteins involved in ER signaling and apoptosis were determined by Western blot analysis and fluorescence microscopy. RESULTS With 50μM of DP41, we observed an increase in O2(-) formation. There was, however, no such increase in O2(-) after treatment with the corresponding selenium compound under the same conditions. In the case of DP41, the production of O2(-) radicals was followed by an up-regulation of Nrf2, HO-1, phospho-eIF2α and ATF4. CHOP was also induced and cells entered apoptosis. Unlike the cancer cells, normal retinal epithelial ARPE-19 cells did not produce elevated levels of O2(-) radicals nor did they induce the ER signaling pathway or apoptosis. CONCLUSIONS The tellurium-containing compound DP41, in contrast to the corresponding selenium compound, induces O2(-) radical formation and oxidative and ER stress responses, including CHOP activation and finally apoptosis. GENERAL SIGNIFICANCE These results indicate that DP41 is a redox modulating agent with promising anti-cancer potentials.
Collapse
|
37
|
Mawatari T, Nakamichi I, Suenaga E, Maloney WJ, Smith RL. Effects of heme oxygenase-1 on bacterial antigen-induced articular chondrocyte catabolism in vitro. J Orthop Res 2013; 31:1943-9. [PMID: 24038461 DOI: 10.1002/jor.22394] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Accepted: 05/01/2013] [Indexed: 02/04/2023]
Abstract
This study tested the hypothesis that heme oxygenase-1 (HO-1) expression counteracts bacterial antigen-induced catabolic metabolism in human articular chondrocytes. HO-1 expression was induced in chondrocytes by the iron-containing porphoryin, hemin. Anti-catabolic and anti-apoptotic effects of HO-1 expression were evaluated following bacterial antigen (lipopolysaccharides, LPS) activation of chondrocytes by quantification of cytokine and cartilage matrix protein expression. Effects of HO-1 over-expression on chondrocyte matrix metabolism were evaluated using plasmid-driven protein synthesis. Hemin increased HO-1 expression and LPS increased interleukin-1beta and interleukin-6 gene and protein expression in chondrocytes. Hemin-induced HO-1 decreased LPS-induced interleukin-1beta and interleukin-6 gene and protein expression. Increased HO-1 expression partially reversed LPS-suppression of aggrecan and type II collagen gene expression and suppressed LPS-induced gene expression of IL-6, inducible nitric oxide synthase (iNOS), matrix metalloproteinases (MMPs), and IL-1beta. HO-1 induction was inversely correlated with LPS-induced chondrocyte apoptosis. HO-1 over-expression in chondrocytes decreased matrix protein gene expression. With LPS activation, increased HO-1 expression decreased chondrocyte catabolism, partially reversed LPS-dependent inhibition of cartilage matrix protein expression and protected against apoptosis. Without LPS, hemin-induced HO-1 and plasmid-based over-expression of HO-1 inhibited cartilage matrix gene expression. The results suggest that elevated HO-1 expression in chondrocytes is protective of cartilage in inflamed joints but may otherwise suppress matrix turn over.
Collapse
Affiliation(s)
- Taro Mawatari
- RR&D Center, Veterans Affairs Palo Alto Health Care System, Palo Alto, California, 94304; Orthopaedic Research Laboratories, Stanford University School of Medicine, 300 Pasteur Drive, R105, Stanford, California, 94305
| | | | | | | | | |
Collapse
|
38
|
Effects of DL-homocysteine thiolactone on cardiac contractility, coronary flow, and oxidative stress markers in the isolated rat heart: the role of different gasotransmitters. BIOMED RESEARCH INTERNATIONAL 2013; 2013:318471. [PMID: 24350259 PMCID: PMC3857920 DOI: 10.1155/2013/318471] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 09/20/2013] [Accepted: 10/31/2013] [Indexed: 11/22/2022]
Abstract
Considering the adverse effects of DL-homocysteine thiolactone hydrochloride (DL-Hcy TLHC) on vascular function and the possible role of oxidative stress in these mechanisms, the aim of this study was to assess the influence of DL-Hcy TLHC alone and in combination with specific inhibitors of important gasotransmitters, such as L-NAME, DL-PAG, and PPR IX, on cardiac contractility, coronary flow, and oxidative stress markers in an isolated rat heart. The hearts were retrogradely perfused according to the Langendorff technique at a 70 cm H2O and administered 10 μM DL-Hcy TLHC alone or in combination with 30 μM L-NAME, 10 μM DL-PAG, or 10 μM PPR IX. The following parameters were measured: dp/dt max, dp/dt min, SLVP, DLVP, MBP, HR, and CF. Oxidative stress markers were measured spectrophotometrically in coronary effluent through TBARS, NO2, O2−, and H2O2 concentrations. The administration of DL-Hcy TLHC alone decreased dp/dt max, SLVP, and CF but did not change any oxidative stress parameters. DL-Hcy TLHC with L-NAME decreased CF, O2−, H2O2, and TBARS. The administration of DL-Hcy TLHC with DL-PAG significantly increased dp/dt max but decreased DLVP, CF, and TBARS. Administration of DL-Hcy TLHC with PPR IX caused a decrease in dp/dt max, SLVP, HR, CF, and TBARS.
Collapse
|
39
|
Alternative 5' untranslated regions are involved in expression regulation of human heme oxygenase-1. PLoS One 2013; 8:e77224. [PMID: 24098580 PMCID: PMC3788786 DOI: 10.1371/journal.pone.0077224] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Accepted: 09/02/2013] [Indexed: 01/19/2023] Open
Abstract
The single nucleotide polymorphism rs2071746 and a (GT)n microsatellite within the human gene encoding heme oxygenase-1 (HMOX1) are associated with incidence or outcome in a variety of diseases. Most of these associations involve either release of heme or oxidative stress. Both polymorphisms are localized in the promoter region, but previously reported correlations with heme oxygenase-1 expression remain not coherent. This ambiguity suggests a more complex organization of the 5’ gene region which we sought to investigate more fully. We evaluated the 5‘ end of HMOX1 and found a novel first exon 1a placing the two previously reported polymorphisms in intronic or exonic positions within the 5’ untranslated region respectively. Expression of exon 1a can be induced in HepG2 hepatoma cells by hemin and is a repressor of heme oxygenase-1 translation as shown by luciferase reporter assays. Moreover, minigene approaches revealed that the quantitative outcome of alternative splicing within the 5’ untranslated region is affected by the (GT)n microsatellite. This data supporting an extended HMOX1 gene model and provide further insights into expression regulation of heme oxygenase-1. Alternative splicing within the HMOX1 5' untranslated region contributes to translational regulation and is a mechanistic feature involved in the interplay between genetic variations, heme oxygenase-1 expression and disease outcome.
Collapse
|
40
|
Xie Y, Mao Y, Lai D, Zhang W, Zheng T, Shen W. Roles of NIA/NR/NOA1-dependent nitric oxide production and HY1 expression in the modulation of Arabidopsis salt tolerance. JOURNAL OF EXPERIMENTAL BOTANY 2013; 64:3045-60. [PMID: 23744476 PMCID: PMC3741688 DOI: 10.1093/jxb/ert149] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Despite substantial evidence on the separate roles of Arabidopsis nitric oxide-associated 1 (NOA1)-associated nitric oxide (NO) production and haem oxygenase 1 (HY1) expression in salt tolerance, their integrative signalling pathway remains largely unknown. To fill this knowledge gap, the interaction network among nitrate reductase (NIA/NR)- and NOA1-dependent NO production and HY1 expression was studied at the genetic and molecular levels. Upon salinity stress, the majority of NO production was attributed to NIA/NR/NOA1. Further evidence confirmed that HY1 mutant hy1-100, nia1/2/noa1, and nia1/2/noa1/hy1-100 mutants exhibited progressive salt hypersensitivity, all of which were significantly rescued by three NO-releasing compounds. The salinity-tolerant phenotype and the stronger NO production in gain-of-function mutant of HY1 were also blocked by the NO synthetic inhibitor and scavenger. Although NO- or HY1-deficient mutants showed a compensatory mode of upregulation of HY1 or slightly increased NO production, respectively, during 2 d of salt treatment, downregulation of ZAT10/12-mediated antioxidant gene expression (cAPX1/2 and FSD1) was observed after 7 d of treatment. The hypersensitive phenotypes and stress-related genes expression profiles were differentially rescued or blocked by the application of NO- (in particular) or carbon monoxide (CO)-releasing compounds, showing a synergistic mode. Similar reciprocal responses were observed in the nia1/2/noa1/hy1-100 quadruple mutant, with the NO-releasing compounds exhibit the maximal rescuing responses. Overall, the findings present the combination of compensatory and synergistic modes, linking NIA/NR/NOA1-dependent NO production and HY1 expression in the modulation of plant salt tolerance.
Collapse
Affiliation(s)
- Yanjie Xie
- College of Life Sciences, Co. Laboratory of Nanjing Agricultural University and Carl Zeiss Far East, Nanjing Agricultural University, Nanjing 210095, China
- * These authors contributed equally to this work
| | - Yu Mao
- College of Life Sciences, Co. Laboratory of Nanjing Agricultural University and Carl Zeiss Far East, Nanjing Agricultural University, Nanjing 210095, China
- * These authors contributed equally to this work
| | - Diwen Lai
- College of Life Sciences, Co. Laboratory of Nanjing Agricultural University and Carl Zeiss Far East, Nanjing Agricultural University, Nanjing 210095, China
| | - Wei Zhang
- College of Life Sciences, Co. Laboratory of Nanjing Agricultural University and Carl Zeiss Far East, Nanjing Agricultural University, Nanjing 210095, China
| | - Tianqing Zheng
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Wenbiao Shen
- College of Life Sciences, Co. Laboratory of Nanjing Agricultural University and Carl Zeiss Far East, Nanjing Agricultural University, Nanjing 210095, China
- To whom correspondence should be addressed. E-mail:
| |
Collapse
|
41
|
Abstract
Heme and its breakdown products CO, Fe, and bilirubin are being recognized as signaling molecules or even therapeutic agents, but also exert adverse effects when released at high concentrations. Manipulating the pathway confers protection in rodent sepsis models via both control of free heme and formation of its first and higher-order products. Thus, regulatory elements present in human heme oxygenase 1 (HMOX1) and biliverdin reductases (BLVRA/B) genes might impact outcome. We tested whether a highly polymorphic (GT)n microsatellite and single-nucleotide polymorphisms in HMOX1 and BLVRA/B genes are associated with outcome of sepsis. Two cohorts (n = 430 and 398 patients) with severe sepsis were screened for single-nucleotide polymorphisms and/or the microsatellite by fragment length analysis and genotyping techniques. Heme oxygenase 1 plasma levels were determined in additional patients with severe sepsis (n = 92) by enzyme-linked immunosorbent assay. Based on mean Sepsis-related Organ Failure Assessment scores, patients homozygous for rs2071746 A allele or medium length (GT)n microsatellites of HMOX1 showed higher 28-day mortality (P = 0.047 and P = 0.033) in one cohort compared with other genotypes, whereas 90-day mortality rates showed no association. The T allele was less frequently observed in both cohorts than would be expected according to Hardy-Weinberg equilibrium. Heme oxygenase 1 plasma levels were elevated in septic patients, independent of the genotype. Single-nucleotide polymorphisms within BLVRA/B showed no association with outcome. Short (GT)n repeats that are in linkage disequilibrium with the T allele of rs2071746 in HMOX1 are associated with favorable outcome, whereas no association with gene variants of BLVRA/B, involved in the generation of higher-order metabolites, was noticed.
Collapse
|
42
|
Zinc Protoporphyrin Upregulates Heme Oxygenase-1 in PC-3 Cells via the Stress Response Pathway. Int J Cell Biol 2013; 2013:162094. [PMID: 23476651 PMCID: PMC3586522 DOI: 10.1155/2013/162094] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 01/04/2013] [Accepted: 01/08/2013] [Indexed: 11/18/2022] Open
Abstract
Zinc protoporphyrin IX (ZnPP), a naturally occurring molecule formed in iron deficiency or lead poisoning, is a potent competitive inhibitor of heme oxygenase-1 (HO-1). It also regulates expression of HO-1 at the transcriptional level. However, the effect of ZnPP on HO-1 expression is controversial. It was shown to induce HO-1 expression in some cells, but suppress it in others. The objective of this study is to investigate the effect of ZnPP on HO-1 expression in prostate cancer PC-3 cells. Incubation of PC-3 cells with 10 μM ZnPP for 4 h showed only a slight induction of HO-1 mRNA and protein, but the induction was high after 16 h and was maintained through 48 h of incubation. Of all the known responsive elements in the HO-1 promoter, ZnPP activated mainly the stress response elements. Of the various protein kinase inhibitors and antioxidant tested, only Ro 31-8220 abrogated ZnPP-induced HO-1 expression, suggesting that activation of HO-1 gene by ZnPP may involve protein kinase C (PKC). The involvement of PKC α, β, δ, η, θ, and ζ isoforms was ruled out by the use of specific inhibitors. The isoform of PKC involved and participation of other transcription factors remain to be studied.
Collapse
|
43
|
Abstract
PURPOSE OF REVIEW The liver comprises a multitude of parenchymal and nonparenchymal cells with diverse metabolic, hemodynamic and immune functions. Available monitoring options consist of 'static' laboratory parameters, quantitative tests of liver function based on clearance, elimination or metabolite formation and scores, most notably the 'model for end-stage liver disease'. This review aims at balancing conventional markers against 'dynamic' tests in the critically ill. RECENT FINDINGS There is emerging evidence that conventional laboratory markers, most notably bilirubin, and the composite model for end-stage liver disease are superior to assess cirrhosis and their acute decompensation, while dynamic tests provide information in the absence of preexisting liver disease. Bilirubin and plasma disappearance rate of indocyanine green reflecting static and dynamic indicators of excretory dysfunction prognosticate unfavorable outcome, both, in the absence and presence of chronic liver disease better than other functions or indicators of injury. Although dye excretion is superior to conventional static parameters in the critically ill, it still underestimates impaired canalicular transport, an increasingly recognized facet of excretory dysfunction. SUMMARY Progress has been made in the last year to weigh static and dynamic tests to monitor parenchymal liver functions, whereas biomarkers to assess nonparenchymal functions remain largely obscure.
Collapse
|
44
|
Lin Y, Li M, Huang L, Shen W, Ren Y. Involvement of heme oxygenase-1 in β-cyclodextrin-hemin complex-induced cucumber adventitious rooting process. PLANT CELL REPORTS 2012; 31:1563-72. [PMID: 22532008 DOI: 10.1007/s00299-012-1270-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 04/09/2012] [Accepted: 04/12/2012] [Indexed: 05/24/2023]
Abstract
UNLABELLED Our previous results showed that β-cyclodextrin-hemin complex (CDH) exhibited a vital protective role against cadmium-induced oxidative damage and toxicity in alfalfa seedling roots by the regulation of heme oxygenase-1 (HO-1) gene expression. In this report, we further test whether CDH exhibited the hormonal-like response. The application of CDH and an inducer of HO-1, hemin, were able to induce the up-regulation of cucumber HO-1 gene (CsHO1) expression and thereafter the promotion of adventitious rooting in cucumber explants. The effect is specific for HO-1 since the potent HO-1 inhibitor zinc protoporphyrin IX (ZnPP) blocked the above responses triggered by CDH, and the inhibitory effects were reversed further when 30% saturation of CO aqueous solution was added together. Further, molecular evidence showed that CDH triggered the increases of the HO-1-mediated target genes responsible for adventitious rooting, including one DnaJ-like gene (CsDNAJ-1) and two calcium-dependent protein kinase (CDPK) genes (CsCDPK1 and CsCDPK5), and were inhibited by ZnPP and reversed by CO. The calcium (Ca2+) chelator ethylene glycol-bis (2-aminoethylether)-N,N,N',N'-tetraacetic acid (EGTA) and the Ca2+ channel blocker lanthanum chloride (LaCl3) not only compromised the induction of adventitious rooting induced by CDH but also decreased the transcripts of above three target genes. However, the application of ascorbic acid (AsA), a well-known antioxidant in plants, failed to exhibit similar inducible effect on adventitious root formation. In short, above results illustrated that the response of CDH in the induction of cucumber adventitious rooting might be through HO-1-dependent mechanism and calcium signaling. KEY MESSAGE Physiological, pharmacological and molecular evidence showed that β-cyclodextrin-hemin complex (CDH) was able to induce cucumber adventitious rooting through heme oxygenase-1 (HO-1)-dependent mechanism and calcium signaling.
Collapse
Affiliation(s)
- Yuting Lin
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | | | | | | | | |
Collapse
|
45
|
Piva A, Zampieri F, Di Pascoli M, Gatta A, Sacerdoti D, Bolognesi M. Mesenteric arteries responsiveness to acute variations of wall shear stress is impaired in rats with liver cirrhosis. Scand J Gastroenterol 2012; 47:1003-13. [PMID: 22774919 DOI: 10.3109/00365521.2012.703231] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE In liver cirrhosis, excessive splanchnic vasodilation is due to abnormal synthesis of endogenous vasodilators and to decreased sensitivity to vasoconstrictors. The role of mechanical stimuli such as wall shear stress (WSS) on splanchnic circulation remains unclear. The aim of this study was to assess the vasodilation induced by wall shear stress (WSS) and acute changes in blood flow in the mesenteric arteries in an experimental model of liver cirrhosis. MATERIALS AND METHODS The effect of acute changes in intraluminal flow (0, 10, and 20 μl/min) and WSS on the diameter of the mesenteric arteries (diameters <500 μm) of control and cirrhotic rats was assessed, at baseline and after the inhibition of nitric oxide synthase, cyclooxygenase and hemeoxygenase. Concentration-response curves to phenylephrine were also obtained. RESULTS In controls, the increase in intraluminal flow led to a significant increase in arterial diameter (p < 0.05), while WSS remained stable; the effect was maintained in vessels pre-constricted with phenylephrine, blocked by the exposure to indomethacin and L-NAME and restored by the subsequent addition of chromium mesoporphyrin (p < 0.05). In cirrhotic arteries, arterial diameters did not change in response to acute increase in flow, neither at baseline nor after exposure to indomethacin and L-NAME, while WSS increased (p < 0.01). Responsiveness to flow was partially restored (p < 0.05) after exposure of the arteries to chromium mesoporphyrin in addition to indomethacin and L-NAME. CONCLUSIONS Arteries from cirrhotic rats showed an abolished responsiveness to acute variations in flow, which exposes the mesenteric endothelium to sudden variations in WSS.
Collapse
Affiliation(s)
- Anna Piva
- Clinica Medica 5, Department of Clinical and Experimental Medicine, University of Padova, Padova, Italy.
| | | | | | | | | | | |
Collapse
|
46
|
Bortscher S, Chang J, Vilz TO, Schäfer N, Sommer N, Wehner S, Kalff JC, Overhaus M. Hemin induction of HO-1 protects against LPS-induced septic ileus. J Surg Res 2012; 178:866-73. [PMID: 22921918 DOI: 10.1016/j.jss.2012.07.064] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2012] [Revised: 07/20/2012] [Accepted: 07/25/2012] [Indexed: 11/29/2022]
Abstract
BACKGROUND Heme oxygenase (HO-1) protects against inflammation. In this study, we investigated the protective function of hemin-induced HO-1 against lipopolysaccharide (LPS)-induced ileus. METHODS Rats received LPS intraperitoneally 24 h after intraperitoneal hemin pretreatment or placebo. We also injected zinc protoporphyrin (ZnPP, 3rd group), an inhibitor of HO-1, intraperitoneally 2 h before LPS administration. To assess intestinal muscle function, we examined muscularis strip contractility in an organ bath and measured gastrointestinal transit in vivo. We investigated inflammation within the muscularis using polymerase chain reaction (interleukin [IL]-6, inducible nitric oxide synthase (iNOS), HO-1 and IL-10) 6 and 24 h after LPS. RESULTS Hemin significantly improved in vitro intestinal muscularis contractility (P < 0.001). In addition, hemin prevented LPS-induced dysmotility in vivo (gastrointestinal transit, geometric center: 8.39 ± 0.33 versus 5.68 ± 0.44; P < 0.001). In Zinc protoporphyrin (ZnPP)-treated animals, both parameters were significantly decreased compared with the hemin group. Messenger RNA expression demonstrated a significant reduction in IL-6 (6 h, hemin: 127.6 ± 36.7 versus LPS: 14,431 ± 5407; 24 h: 1.58 ± 0.39 versus 11.15 ± 2.59; P < 0.01) and iNOS (6 h: 2516 ± 985 versus 50,771 ± 13,321; 24 h: 55.11 ± 10.55 versus 257.1 ± 43.18; P < 0.001) in hemin-treated animals. Anti-inflammatory HO-1 messenger RNA levels (6 h, hemin: 116.3 ± 18.55 versus LPS: 26.02 ± 3.64; 24 h: 18.46 ± 2.69 versus 2.80 ± 0.32; P < 0.001) were increased. There was no significant difference in IL-10 levels at 6 and 24 h. ZnPP reversed the anti-inflammatory hemin effects. CONCLUSIONS Hemin induction of HO-1 diminishes LPS-induced sepsis. Heme oxygenase-1 has a central role in preventing sepsis-induced ileus. This benefit is reversed by HO-1 inhibition with ZnPP.
Collapse
Affiliation(s)
- Stephan Bortscher
- Department of General, Visceral, Thoracic, and Vascular Surgery, University of Bonn, Bonn, Germany
| | | | | | | | | | | | | | | |
Collapse
|
47
|
Mahan VL, Zurakowski D, Otterbein LE, Pigula FA. Inhaled carbon monoxide provides cerebral cytoprotection in pigs. PLoS One 2012; 7:e41982. [PMID: 22879904 PMCID: PMC3413707 DOI: 10.1371/journal.pone.0041982] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Accepted: 06/27/2012] [Indexed: 11/18/2022] Open
Abstract
Carbon monoxide (CO) at low concentrations imparts protective effects in numerous preclinical small animal models of brain injury. Evidence of protection in large animal models of cerebral injury, however, has not been tested. Neurologic deficits following open heart surgery are likely related in part to ischemia reperfusion injury that occurs during cardiopulmonary bypass surgery. Using a model of deep hypothermic circulatory arrest (DHCA) in piglets, we evaluated the effects of CO to reduce cerebral injury. DHCA and cardiopulmonary bypass (CPB) induced significant alterations in metabolic demands, including a decrease in the oxygen/glucose index (OGI), an increase in lactate/glucose index (LGI) and a rise in cerebral blood pressure that ultimately resulted in increased cell death in the neocortex and hippocampus that was completely abrogated in piglets preconditioned with a low, safe dose of CO. Moreover CO-treated animals maintained normal, pre-CPB OGI and LGI and corresponding cerebral sinus pressures with no change in systemic hemodynamics or metabolic intermediates. Collectively, our data demonstrate that inhaled CO may be beneficial in preventing cerebral injury resulting from DHCA and offer important therapeutic options in newborns undergoing DHCA for open heart surgery.
Collapse
Affiliation(s)
- Vicki L Mahan
- Department of Surgery, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America.
| | | | | | | |
Collapse
|
48
|
Li LF, Kao KC, Yang CT, Huang CC, Liu YY. Ethyl pyruvate reduces ventilation-induced neutrophil infiltration and oxidative stress. Exp Biol Med (Maywood) 2012; 237:720-7. [PMID: 22715434 DOI: 10.1258/ebm.2012.011184] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Mechanical ventilation with high tidal volume causes intense inflammatory responses and oxidative stress, including the release of high-mobility group box-1 (HMGB1), plasminogen activator inhibitor-1 (PAI-1) and heme oxygenase-1 (HO-1). The mechanisms regulating ventilator-induced lung injury (VILI) are unclear. We hypothesized that ethyl pyruvate attenuated acute lung injury as adjunctive pharmacological strategy by down-regulating neutrophil infiltration, oxidative stress and HMGB1 mRNA expression. C57BL/6 mice, weighing 20-25 g, were exposed to either low-tidal-volume (6 mL/kg) or high-tidal-volume (30 mL/kg) mechanical ventilation with room air for 2-5 h and subjected to 100 mg/kg ethyl pyruvate administration intraperitoneally. Non-ventilated mice served as the control group. Evans blue dye, lung wet-to-dry weight ratio, lung neutrophil infiltration and myeloperoxidase, free radicals, gene expression of HMGB1, active PAI-1 and HMGB1 production and HO-1 expression were measured. The expression of HO-1 was studied by immunohistochemistry. High-tidal-volume ventilation induced microvascular leak, neutrophil recruitment, oxidative injury, HMGB1 and active PAI-1 protein production, and upregulation of HMGB1 mRNA and stress-inducible protein HO-1. In contrast, administration of ethyl pyruvate before high stretch mechanical ventilation prevented lung edema formation, inflammatory cytokine production, neutrophil accumulation, oxidative stress and HMGB1 and HO-1 expression. High-tidal-volume mechanical ventilation increased microvascular permeability, neutrophil influx and inflammatory cytokines. Ethyl pyruvate is capable of suppressing the VILI related to the reduction of HMGB1 and our findings support the potential use of ethyl pyruvate as a therapeutic agent for the prevention of VILI.
Collapse
Affiliation(s)
- Li-Fu Li
- Division of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, Kweishan, Taoyuan 333, Taiwan
| | | | | | | | | |
Collapse
|
49
|
Xie Y, Xu D, Cui W, Shen W. Mutation of Arabidopsis HY1 causes UV-C hypersensitivity by impairing carotenoid and flavonoid biosynthesis and the down-regulation of antioxidant defence. JOURNAL OF EXPERIMENTAL BOTANY 2012; 63:3869-83. [PMID: 22419743 PMCID: PMC3388838 DOI: 10.1093/jxb/ers078] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Revised: 02/10/2012] [Accepted: 02/20/2012] [Indexed: 05/18/2023]
Abstract
Previous pharmacological results confirmed that haem oxygenase-1 (HO-1) is involved in protection of cells against ultraviolet (UV)-induced oxidative damage in soybean [Glycine max (L.) Merr.] seedlings, but there remains a lack of genetic evidence. In this study, the link between Arabidopsis thaliana HO-1 (HY1) and UV-C tolerance was investigated at the genetic and molecular levels. The maximum inducible expression of HY1 in wild-type Arabidopsis was observed following UV-C irradiation. UV-C sensitivity was not observed in ho2, ho3, and ho4 single and double mutants. However, the HY1 mutant exhibited UV-C hypersensitivity, consistent with the observed decreases in chlorophyll content, and carotenoid and flavonoid metabolism, as well as the down-regulation of antioxidant defences, thereby resulting in severe oxidative damage. The addition of the carbon monoxide donor carbon monoxide-releasing molecule-2 (CORM-2), in particular, and bilirubin (BR), two catalytic by-products of HY1, partially rescued the UV-C hypersensitivity, and other responses appeared in the hy1 mutant. Transcription factors involved in the synthesis of flavonoid or UV responses were induced by UV-C, but reduced in the hy1 mutant. Overall, the findings showed that mutation of HY1 triggered UV-C hypersensitivity, by impairing carotenoid and flavonoid synthesis and antioxidant defences.
Collapse
Affiliation(s)
| | | | | | - Wenbiao Shen
- To whom correspondence should be addressed. E-mail:
| |
Collapse
|
50
|
Lundvig DMS, Immenschuh S, Wagener FADTG. Heme oxygenase, inflammation, and fibrosis: the good, the bad, and the ugly? Front Pharmacol 2012; 3:81. [PMID: 22586396 PMCID: PMC3345581 DOI: 10.3389/fphar.2012.00081] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Accepted: 04/13/2012] [Indexed: 12/13/2022] Open
Abstract
Upon injury, prolonged inflammation and oxidative stress may cause pathological wound healing and fibrosis, leading to formation of excessive scar tissue. Fibrogenesis can occur in most organs and tissues and may ultimately lead to organ dysfunction and failure. The underlying mechanisms of pathological wound healing still remain unclear, and are considered to be multifactorial, but so far, no efficient anti-fibrotic therapies exist. Extra- and intracellular levels of free heme may be increased in a variety of pathological conditions due to release from hemoproteins. Free heme possesses pro-inflammatory and oxidative properties, and may act as a danger signal. Effects of free heme may be counteracted by heme-binding proteins or by heme degradation. Heme is degraded by heme oxygenase (HO) that exists as two isoforms: inducible HO-1 and constitutively expressed HO-2. HO generates the effector molecules biliverdin/bilirubin, carbon monoxide, and free iron/ferritin. HO deficiency in mouse and man leads to exaggerated inflammation following mild insults, and accumulating epidemiological and preclinical studies support the widely recognized notion of the cytoprotective, anti-oxidative, and anti-inflammatory effects of the activity of the HO system and its effector molecules. In this review, we address the potential effects of targeted HO-1 induction or administration of HO-effector molecules as therapeutic targets in fibrotic conditions to counteract inflammatory and oxidative insults. This is exemplified by various clinically relevant conditions, such as hypertrophic scarring, chronic inflammatory liver disease, chronic pancreatitis, and chronic graft rejection in transplantation.
Collapse
Affiliation(s)
- Ditte M S Lundvig
- Department of Orthodontics and Craniofacial Biology, Nijmegen Centre for Molecular Life Sciences, Radboud University Nijmegen Medical Centre Nijmegen, Netherlands
| | | | | |
Collapse
|