1
|
Involvement of oxidative stress-induced ERK/JNK activation in the Cu2+/pyrrolidine dithiocarbamate complex-triggered mitochondria-regulated apoptosis in pancreatic β-cells. Toxicol Lett 2012; 208:275-85. [DOI: 10.1016/j.toxlet.2011.10.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 10/29/2011] [Accepted: 10/31/2011] [Indexed: 12/26/2022]
|
2
|
Sodhi K, Puri N, Inoue K, Falck JR, Schwartzman ML, Abraham NG. EET agonist prevents adiposity and vascular dysfunction in rats fed a high fat diet via a decrease in Bach 1 and an increase in HO-1 levels. Prostaglandins Other Lipid Mediat 2011; 98:133-42. [PMID: 22209722 DOI: 10.1016/j.prostaglandins.2011.12.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Revised: 12/09/2011] [Accepted: 12/15/2011] [Indexed: 12/18/2022]
Abstract
Recent reports have shown interplay between EETs (epoxides) and the heme oxygenase (HO) system in attenuating adipogenesis in cell culture models; prompting an examination of the effectiveness of EET agonist on obesity and associated cardio-metabolic dysfunction. Patho-physiological effects of an EET agonist (NUDSA) were contrasted in the absence and in the presence of stannous mesoporphyrin (an HO inhibitor) in SD rats fed a high fat (58%, HF) for 16 weeks. Animals on HF diet exhibited enhanced oxidative stress, increased levels of inflammatory cytokines and decreased levels of adiponectin along with reduced vascular and adipose tissue levels of EETs, HO-1; as compared to control rats (11% dietary fat). Treatment with NUDSA not only reversed serum adiponectin and vascular and adipose tissue levels of EETs and HO-1, but also, decreased blood pressure, subcutaneous and visceral fat content and serum TNFα and IL-6 levels in rats on HF diet. Aortic endothelial function, peNOS expression and adipose tissue markers of energy homeostasis i.e. pAMPK, Sirt1 and FAS, impaired in rats fed a HF diet, were restored in animals treated with this EET agonist. That NUDSA enhanced HO-1 expression, was accompanied by increase in p-GSK-3β and pAKT levels along with attenuation of adipose tissue levels of Bach 1--the transcriptional suppresser of HO-1 expression. Prevention of these beneficial effects of NUDSA, in animals on HF diet and concurrently exposed to NUDSA and SnMP, supports the role of EET-HO interaction in mediating such effects. Taken together, our findings suggest that the EETs stimulate HO-1 expression via suppression of Bach 1 and interplay of these two systems affords vascular and metabolic protection in diet induced obesity.
Collapse
Affiliation(s)
- Komal Sodhi
- Department of Physiology and Pharmacology, The University of Toledo College of Medicine, Health Education Building, 3000 Arlington Avenue, Toledo, OH 43614-2598, USA
| | | | | | | | | | | |
Collapse
|
3
|
Abstract
This review is intended to stimulate interest in the effect of increased expression of heme oxygenase-1 (HO-1) protein and increased levels of HO activity on normal and pathological states. The HO system includes the heme catabolic pathway, comprising HO and biliverdin reductase, and the products of heme degradation, carbon monoxide (CO), iron, and biliverdin/bilirubin. The role of the HO system in diabetes, inflammation, heart disease, hypertension, neurological disorders, transplantation, endotoxemia and other pathologies is a burgeoning area of research. This review focuses on the clinical potential of increased levels of HO-1 protein and HO activity to ameliorate tissue injury. The use of pharmacological and genetic probes to manipulate HO, leading to new insights into the complex relationship of the HO system with biological and pathological phenomena under investigation, is reviewed. This information is critical in both drug development and the implementation of clinical approaches to moderate and to alleviate the numerous chronic disorders in humans affected by perturbations in the HO system.
Collapse
Affiliation(s)
- Nader G Abraham
- New York Medical College, Basic Science Building, Valhalla, NY 10595, USA.
| | | |
Collapse
|
4
|
Iori E, Pagnin E, Gallo A, Calò L, Murphy E, Ostuni F, Fadini GP, Avogaro A. Heme oxygenase-1 is an important modulator in limiting glucose-induced apoptosis in human umbilical vein endothelial cells. Life Sci 2008; 82:383-92. [DOI: 10.1016/j.lfs.2007.11.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2006] [Revised: 10/26/2007] [Accepted: 11/22/2007] [Indexed: 11/28/2022]
|
5
|
Malaguarnera L, Pilastro MR, Vicari L, Dimarco R, Manzella L, Palumbo G, Messina A. Pyrrolidinedithiocarbamate induces apoptosis in human acute myelogenous leukemic cells affecting NF-kappaB activity. Cancer Invest 2005; 23:404-12. [PMID: 16193640 DOI: 10.1081/cnv-67147] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Pyrrolidindithiocarbamate (PDTC), is a metal chelator widely used to study the activation of redox sensitive transcription factors. Recently it has been demonstrated that it manifests pro-oxidant properties. The nuclear factor-Kappa B (NF-kappaB) transcription factor can both promote cell survival and induce apoptosis depending on cell type and context in response to genotoxic stress. In our previous study we reported that in acute myelogenous leukemia CD34+ cells PDTC stimulates apoptosis, whereas in CD34+ cells of healthy volunteers PDTC was ineffective. This cytotoxicity was dependent on the generation of superoxide anion and oxidized glutathione. In this article we have shown that the pro-oxidant effect of PDTC in AML cells induces NF-kappaB activity. These findings imply a role for NF-kappaB in the survival of normal cells with respect to leukemic cells, suggesting that NF-kappaB activity and function differs according to tumor cell phenotype.
Collapse
Affiliation(s)
- Lucia Malaguarnera
- Department of Biomedical Sciences, University of Catania, Catania, Italy.
| | | | | | | | | | | | | |
Collapse
|
6
|
Calviello G, Filippi GM, Toesca A, Palozza P, Maggiano N, Nicuolo FD, Serini S, Azzena GB, Galeotti T. Repeated exposure to pyrrolidine-dithiocarbamate induces peripheral nerve alterations in rats. Toxicol Lett 2005; 158:61-71. [PMID: 15993744 DOI: 10.1016/j.toxlet.2005.02.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2004] [Revised: 02/26/2005] [Accepted: 02/28/2005] [Indexed: 11/21/2022]
Abstract
Pyrrolidine-dithiocarbamate (PDTC), a synthetic compound widely used in cell biological investigations, recently attracted considerable interest as a putative anticancer agent. However, different dithiocarbamates have previously shown to cause neurological symptoms and morphological alterations in peripheral nerves. The purpose of the present study was to determine whether a 15-day oral administration with low doses of PDTC may produce adverse effects in peripheral nerves of rats. Female Wistar rats were assigned to receive PDTC [0.1, 0.5 or 1.0mmol/(kg body weight/day)] by gavage for 15 days. Reduced conduction velocity was observed by electrophysiological analysis in tibial nerves of treated animals, accompanied by a marked decrease in Shwann cell S100-protein expression determined by immunohistochemistry. Electron microscopy evaluation revealed marked myelin degeneration in the fibers of treated animals. In particular, both morphological and electrophysiological data suggested an impairment of large, fast conducting fibers, whereas the smallest and slowest ones remained intact. However, the activity of plasma and liver alkaline-phosphatase, an enzymic marker of hepatic dithiocarbamate toxicity, was not altered by the treatment. The total contents of the redox-active metal copper increased in tibial nerves of treated rats and was accompanied by raised levels of lipid peroxidation products. This finding suggests a role for oxidative stress in the development of PDTC-induced pathological and functional alterations of tibial nerves. The observation that a 15-day treatment with low doses of PDTC causes functional and morphological derangement of peripheral nerves advices against the possible use of this compound as a chemopreventive agent against cancer.
Collapse
Affiliation(s)
- Gabriella Calviello
- Institute of General Pathology, Catholic University, L.go F. Vito 1, 00168 Rome, Italy
| | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Chang KW, Lee TC, Yeh WI, Chung MY, Liu CJ, Chi LY, Lin SC. Polymorphism in heme oxygenase-1 (HO-1) promoter is related to the risk of oral squamous cell carcinoma occurring on male areca chewers. Br J Cancer 2004; 91:1551-5. [PMID: 15365571 PMCID: PMC2409944 DOI: 10.1038/sj.bjc.6602186] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Areca (betel) chewing is associated with the high incidence of oral squamous cell carcinoma (OSCC) and oral submucous fibrosis (OSF) in Asians. Heme oxygenase-1 (HO-1), encoding an oxidative response protein, plays protective roles in cells. A (GT)n microsatellite repeat in HO-1 promoter shows polymorphisms and modulates the level of gene transcription. We examined allelotypic frequencies of (GT)n repeats in 83 controls, 147 OSCC and 71 OSF. All subjects were male areca chewers. Logistic regression was used to adjust the age confounding for odds ratio (OR). (GT)n repeat polymorphism was classified into short (S), medium (M) and long (L) alleles. The adjusted OR in OSCC subjects carrying L allelotype relative to S allelotype was 1.75. Buccal squamous cell carcinoma (BSCC) is the most common OSCC subset in areca chewers. L allelotype implied the risk of BSCC with adjusted OR of 2.05, whereas M allelotype appeared protective for non-BSCC with adjusted OR of 0.49. Our findings indicated that longer (GT)n repeat allele in HO-1 promoter is associated with the risks of areca-related OSCC, while the shorter (GT)n repeat allele may have protective effects for OSCC.
Collapse
Affiliation(s)
- K-W Chang
- School of Dentistry, National Yang-Ming University, Sec. 2, No. 155, Li-Nong St, Peitou, Taipei 112, Taiwan
| | - T-C Lee
- School of Life Sciences, National Yang-Ming University, Sec. 2, No. 155, Li-Nong St, Peitou, Taipei 112, Taiwan
| | - W-I Yeh
- School of Dentistry, National Yang-Ming University, Sec. 2, No. 155, Li-Nong St, Peitou, Taipei 112, Taiwan
| | - M-Y Chung
- Department of Medical Education and Research, Veterans General Hospital, Taipei, Taiwan
| | - C-J Liu
- School of Dentistry, National Yang-Ming University, Sec. 2, No. 155, Li-Nong St, Peitou, Taipei 112, Taiwan
- Oral & Maxillofacial Surgery, Taipei Mackay Memorial Hospital, Taiwan
| | - L-Y Chi
- School of Dentistry, National Yang-Ming University, Sec. 2, No. 155, Li-Nong St, Peitou, Taipei 112, Taiwan
| | - S-C Lin
- School of Dentistry, National Yang-Ming University, Sec. 2, No. 155, Li-Nong St, Peitou, Taipei 112, Taiwan
- School of Dentistry, National Yang-Ming University, Sec. 2, No. 155, Li-Nong St, Peitou, Taipei 112, Taiwan. E-mail:
| |
Collapse
|
8
|
Abstract
The field of Maillard/glycation reactions in vivo has grown enormously during the past 20 years, going from 25 to 500 publications per year. It is now well recognized that many of the "advanced" products form oxidatively or anaerobically and can have deleterious effects on macromolecular and biological function. The feasibility of developing pharmacological agents with beneficial in vivo properties, based on in vitro inhibition of glycation, has been surprisingly successful. This Editorial sets the stage for a series of articles by experts in the field, who have made key contributions to our understanding of the Maillard reaction in vivo.
Collapse
|