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Rincón-Rubio A, Mérida-Ortega Á, Ugalde-Resano R, Gamboa-Loira B, Rothenberg SJ, González FB, Cebrián ME, López-Carrillo L. Carcinogenic, non-carcinogenic risk, and attributable cases to organochlorine pesticide exposure in women from Northern Mexico. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:421. [PMID: 38570395 DOI: 10.1007/s10661-024-12584-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 03/23/2024] [Indexed: 04/05/2024]
Abstract
This study aimed to estimate the carcinogenic and non-carcinogenic risk as well as the attributable cases due to exposure to organochlorine pesticides (OCPs): hexachlorobenzene (HCB), dichlorophenyltrichloroethane (DDT), hexachlorocyclohexane (HCH), heptachlor, and chlordane. From serum concentrations of pesticides of interest in a sample of 908 women from Northern Mexico, the risk for both cancer and non-cancer health effects was evaluated. The population attributable fraction (PAF) was also calculated based on summary association estimates between exposure to OCPs and different health events. Findings revealed that due to their OCP exposure slightly less than half of the women in the sample were at increased risk of developing non-cancerous diseases. Moreover, approximately 25% and 75% of participants were at risk of develop some type of cancer associated with their HCB and DDE concentrations, respectively. In addition, it was estimated that 40.5% of type 2 diabetes, 18.7% of endometriosis, and 23.1% of non-Hodgkin's lymphoma cases could have been prevented if women had not been exposed to these OCPs. Results suggest that the use of OCPs may have contributed to the disease burden in the study area and, based on the time required for these substances to be eliminated from the body, there are probably some women who are still at elevated risk of developing diseases associated to OCPs.
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Affiliation(s)
- Alma Rincón-Rubio
- Centro de Investigación en Salud Poblacional, Instituto Nacional de Salud Pública, Col. Santa María Ahuacatitlán, Av. Universidad 655, C.P. 62100, Cuernavaca, Morelos, México
| | - Ángel Mérida-Ortega
- Centro de Investigación en Salud Poblacional, Instituto Nacional de Salud Pública, Col. Santa María Ahuacatitlán, Av. Universidad 655, C.P. 62100, Cuernavaca, Morelos, México
| | - Rodrigo Ugalde-Resano
- Centro de Investigación en Salud Poblacional, Instituto Nacional de Salud Pública, Col. Santa María Ahuacatitlán, Av. Universidad 655, C.P. 62100, Cuernavaca, Morelos, México
| | - Brenda Gamboa-Loira
- Centro de Investigación en Salud Poblacional, Instituto Nacional de Salud Pública, Col. Santa María Ahuacatitlán, Av. Universidad 655, C.P. 62100, Cuernavaca, Morelos, México
- Facultad de Medicina, Universidad Autónoma de Yucatán, Av. Itzáes 498, Colonia Centro, C.P. 97000, Mérida, Yucatán, México
| | - Stephen J Rothenberg
- Centro de Investigación en Salud Poblacional, Instituto Nacional de Salud Pública, Col. Santa María Ahuacatitlán, Av. Universidad 655, C.P. 62100, Cuernavaca, Morelos, México
| | - Fernando Bejarano González
- Red de Acción Sobre Plaguicidas y Alternativas en México, A. C. (RAPAM), Amado Nervo 23, Int. 3, Col. San Juanito, C.P. 56121, Texcoco, Estado de México, México
| | - Mariano E Cebrián
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, México
| | - Lizbeth López-Carrillo
- Centro de Investigación en Salud Poblacional, Instituto Nacional de Salud Pública, Col. Santa María Ahuacatitlán, Av. Universidad 655, C.P. 62100, Cuernavaca, Morelos, México.
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Lichtblau M, Reimann L, Piccari L. Pulmonary vascular disease, environmental pollution, and climate change. Pulm Circ 2024; 14:e12394. [PMID: 38933180 PMCID: PMC11205889 DOI: 10.1002/pul2.12394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 05/19/2024] [Accepted: 05/20/2024] [Indexed: 06/28/2024] Open
Abstract
Pollution and climate change constitute a combined, grave and pervasive threat to humans and to the life-support systems on which they depend. Evidence shows a strong association between pollution and climate change on cardiovascular and respiratory diseases, and pulmonary vascular disease (PVD) is no exception. An increasing number of studies has documented the impact of environmental pollution and extreme temperatures on pulmonary circulation and the right heart, on the severity and outcomes of patients with pulmonary arterial hypertension and chronic thromboembolic pulmonary hypertension (PH), on the incidence of pulmonary embolism, and the prevalence and severity of diseases associated with PH. Furthermore, the downstream consequences of climate change impair health care systems' accessibility, which could pose unique obstacles in the case of PVD patients, who require a complex and sophisticated network of health interventions. Patients, caretakers and health care professionals should thus be included in the design of policies aimed at adaptation to and mitigation of current challenges, and prevention of further climate change. The purpose of this review is to summarize the available evidence concerning the impact of environmental pollution and climate change on the pulmonary circulation, and to propose measures at the individual, healthcare and community levels directed at protecting patients with PVD.
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Affiliation(s)
- Mona Lichtblau
- Clinic of Pulmonology, Pulmonary Hypertension UnitUniversity Hospital ZurichZurichSwitzerland
| | - Lena Reimann
- Clinic of Pulmonology, Pulmonary Hypertension UnitUniversity Hospital ZurichZurichSwitzerland
| | - Lucilla Piccari
- Department of Pulmonary MedicineHospital del MarBarcelonaSpain
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Zhang D, Ji P, Sun R, Zhou H, Huang L, Kong L, Li W, Li W. Ginsenoside Rg1 attenuates LPS-induced chronic renal injury by inhibiting NOX4-NLRP3 signaling in mice. Biomed Pharmacother 2022; 150:112936. [PMID: 35421784 DOI: 10.1016/j.biopha.2022.112936] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/27/2022] [Accepted: 04/06/2022] [Indexed: 11/22/2022] Open
Abstract
Chronic renal injury (CRI) is a common pathological damage in chronic renal disease, and the therapeutic options for preventing its progression are limited at present. Ginsenoside Rg1 (Rg1) is reported to have a protective effect on renal injury by improving oxidative stress and inflammation. Lipopolysaccharide (LPS) plays important roles in inducing inflammatory and high-dose LPS is often used to perform acute renal injury. However, little is known about the effect of low-dose LPS on CRI, and the protective effect of Rg1 against chronic LPS-induced CRI. Here, we reported the protective effect and mechanism of Rg1 against LPS-induced CRI in mice. In this study, the results demonstrated that low-dose LPS (0.25 mg/kg) exposure for 14 days significantly induced renal function impairment and renal injury and fibrosis. Meanwhile, LPS exposure significantly increased reactive oxygen species (ROS) generation, NADPH oxidase 4 (NOX4) and NLRP3 inflammasome expression in renal cortex. However, treatment with Rg1, tempol (a superoxide dismutase mimetic), and apocynin (a NOX inhibitor) significantly improved renal function impairment and renal fibrosis, and significantly decreased the levels of TGF-β, IL-1β, KIM-1, β-Gal, and collagen IV in the kidneys. And Rg1 treatment also significantly reduced ROS generation and inhibited the activation of NOX4 and NLRP3 inflammasome. Overall, these results suggest that Rg1 treatment can ameliorate LPS-induced chronic kidney injury and renal fibrosis, the mechanisms may be involved in reducing NOX2-mediated oxidative stress and inhibiting NLRP1 inflammasome.
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Affiliation(s)
- Duoduo Zhang
- Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Hefei 230032, Anhui, China; Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei 230032, Anhui, China
| | - Pengmin Ji
- Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Hefei 230032, Anhui, China; Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei 230032, Anhui, China
| | - Ran Sun
- Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Hefei 230032, Anhui, China; Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei 230032, Anhui, China
| | - Huimin Zhou
- Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Hefei 230032, Anhui, China; Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei 230032, Anhui, China
| | - Lei Huang
- Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Hefei 230032, Anhui, China; Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei 230032, Anhui, China
| | - Liangliang Kong
- Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Hefei 230032, Anhui, China; Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei 230032, Anhui, China
| | - Weiping Li
- Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Hefei 230032, Anhui, China; Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei 230032, Anhui, China; Anqing Medical and Pharmaceutical College, Anqing 246052, Anhui, China.
| | - Weizu Li
- Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Hefei 230032, Anhui, China; Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei 230032, Anhui, China.
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Li Y, Zhang D, Li L, Han Y, Dong X, Yang L, Li X, Li W, Li W. Ginsenoside Rg1 ameliorates aging‑induced liver fibrosis by inhibiting the NOX4/NLRP3 inflammasome in SAMP8 mice. Mol Med Rep 2021; 24:801. [PMID: 34523690 PMCID: PMC8456316 DOI: 10.3892/mmr.2021.12441] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 08/27/2021] [Indexed: 12/23/2022] Open
Abstract
Aging is often accompanied by liver injury and fibrosis, eventually leading to the decline in liver function. However, the mechanism of aging‑induced liver injury and fibrosis is still not fully understood, to the best of our knowledge, and there are currently no effective treatment options available for liver aging. Ginsenoside Rg1 (Rg1) has been reported to exert potent anti‑aging effects due to its potential antioxidant and anti‑inflammatory activity. The present study aimed to investigate the protective effect and underlying mechanism of action of Rg1 in aging‑induced liver injury and fibrosis in senescence‑accelerated mouse prone 8 (SAMP8) mice treated for 9 weeks. The histopathological results showed that the arrangement of hepatocytes was disordered, vacuole‑like degeneration occurred in the majority of cells, and collagen IV and TGF‑β1 expression levels, that were detected via immunohistochemistry, were also significantly upregulated in the SAMP8 group. Rg1 treatment markedly improved aging‑induced liver injury and fibrosis, and significantly downregulated the expression levels of collagen IV and TGF‑β1. In addition, the dihydroethylene staining and western blotting results showed that Rg1 treatment significantly reduced the levels of reactive oxygen species (ROS) and IL‑1β, and downregulated the expression levels of NADPH oxidase 4 (NOX4), p47phox, p22phox, phosphorylated‑NF‑κB, caspase‑1, apoptosis‑associated speck‑like protein containing a C‑terminal caspase recruitment domain and the NLR family pyrin domain containing 3 (NLRP3) inflammasome, which were significantly upregulated in the liver tissues of elderly SAMP8 mice. In conclusion, the findings of the present study suggested that Rg1 may attenuate aging‑induced liver injury and fibrosis by reducing NOX4‑mediated ROS oxidative stress and inhibiting NLRP3 inflammasome activation.
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Affiliation(s)
- Yan Li
- Key Laboratory of Anti‑Inflammatory and Immunopharmacology, Ministry of Education, Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Duoduo Zhang
- Key Laboratory of Anti‑Inflammatory and Immunopharmacology, Ministry of Education, Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Lan Li
- Key Laboratory of Anti‑Inflammatory and Immunopharmacology, Ministry of Education, Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Yuli Han
- Key Laboratory of Anti‑Inflammatory and Immunopharmacology, Ministry of Education, Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Xianan Dong
- Key Laboratory of Anti‑Inflammatory and Immunopharmacology, Ministry of Education, Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Liu Yang
- Key Laboratory of Anti‑Inflammatory and Immunopharmacology, Ministry of Education, Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Xuewang Li
- Key Laboratory of Anti‑Inflammatory and Immunopharmacology, Ministry of Education, Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Weizu Li
- Key Laboratory of Anti‑Inflammatory and Immunopharmacology, Ministry of Education, Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Weiping Li
- Key Laboratory of Anti‑Inflammatory and Immunopharmacology, Ministry of Education, Department of Pharmacology, Basic Medicine College, Anhui Medical University, Hefei, Anhui 230032, P.R. China
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Rand D, Ravid O, Atrakchi D, Israelov H, Bresler Y, Shemesh C, Omesi L, Liraz-Zaltsman S, Gosselet F, Maskrey TS, Schnaider Beeri M, Wipf P, Cooper I. Endothelial Iron Homeostasis Regulates Blood-Brain Barrier Integrity via the HIF2α-Ve-Cadherin Pathway. Pharmaceutics 2021; 13:pharmaceutics13030311. [PMID: 33670876 PMCID: PMC7997362 DOI: 10.3390/pharmaceutics13030311] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/18/2021] [Accepted: 02/24/2021] [Indexed: 12/14/2022] Open
Abstract
The objective of this study was to investigate the molecular response to damage at the blood-brain barrier (BBB) and to elucidate critical pathways that might lead to effective treatment in central nervous system (CNS) pathologies in which the BBB is compromised. We have used a human, stem-cell derived in-vitro BBB injury model to gain a better understanding of the mechanisms controlling BBB integrity. Chemical injury induced by exposure to an organophosphate resulted in rapid lipid peroxidation, initiating a ferroptosis-like process. Additionally, mitochondrial ROS formation (MRF) and increase in mitochondrial membrane permeability were induced, leading to apoptotic cell death. Yet, these processes did not directly result in damage to barrier functionality, since blocking them did not reverse the increased permeability. We found that the iron chelator, Desferal© significantly decreased MRF and apoptosis subsequent to barrier insult, while also rescuing barrier integrity by inhibiting the labile iron pool increase, inducing HIF2α expression and preventing the degradation of Ve-cadherin specifically on the endothelial cell surface. Moreover, the novel nitroxide JP4-039 significantly rescued both injury-induced endothelium cell toxicity and barrier functionality. Elucidating a regulatory pathway that maintains BBB integrity illuminates a potential therapeutic approach to protect the BBB degradation that is evident in many neurological diseases.
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Affiliation(s)
- Daniel Rand
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer 52621, Israel; (D.R.); (O.R.); (D.A.); (H.I.); (Y.B.); (C.S.); (L.O.); (S.L.-Z.); (M.S.B.)
- Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv 69978, Israel
| | - Orly Ravid
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer 52621, Israel; (D.R.); (O.R.); (D.A.); (H.I.); (Y.B.); (C.S.); (L.O.); (S.L.-Z.); (M.S.B.)
| | - Dana Atrakchi
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer 52621, Israel; (D.R.); (O.R.); (D.A.); (H.I.); (Y.B.); (C.S.); (L.O.); (S.L.-Z.); (M.S.B.)
| | - Hila Israelov
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer 52621, Israel; (D.R.); (O.R.); (D.A.); (H.I.); (Y.B.); (C.S.); (L.O.); (S.L.-Z.); (M.S.B.)
| | - Yael Bresler
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer 52621, Israel; (D.R.); (O.R.); (D.A.); (H.I.); (Y.B.); (C.S.); (L.O.); (S.L.-Z.); (M.S.B.)
- Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv 69978, Israel
| | - Chen Shemesh
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer 52621, Israel; (D.R.); (O.R.); (D.A.); (H.I.); (Y.B.); (C.S.); (L.O.); (S.L.-Z.); (M.S.B.)
| | - Liora Omesi
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer 52621, Israel; (D.R.); (O.R.); (D.A.); (H.I.); (Y.B.); (C.S.); (L.O.); (S.L.-Z.); (M.S.B.)
| | - Sigal Liraz-Zaltsman
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer 52621, Israel; (D.R.); (O.R.); (D.A.); (H.I.); (Y.B.); (C.S.); (L.O.); (S.L.-Z.); (M.S.B.)
- Department of Pharmacology, The Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem 97905, Israel
- Department of Sports Therapy, Institute for Health and Medical Professions, Ono Academic College, Kiryat Ono 55000, Israel
| | - Fabien Gosselet
- Blood-Brain Barrier Laboratory (LBHE), Artois University, UR 2465, F-62300 Lens, France;
| | - Taber S. Maskrey
- Department of Chemistry and Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15260, USA; (T.S.M.); (P.W.)
| | - Michal Schnaider Beeri
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer 52621, Israel; (D.R.); (O.R.); (D.A.); (H.I.); (Y.B.); (C.S.); (L.O.); (S.L.-Z.); (M.S.B.)
- Department of Psychiatry, The Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- School of Psychology, Interdisciplinary Center (IDC), Herzliya 4610101, Israel
| | - Peter Wipf
- Department of Chemistry and Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15260, USA; (T.S.M.); (P.W.)
| | - Itzik Cooper
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer 52621, Israel; (D.R.); (O.R.); (D.A.); (H.I.); (Y.B.); (C.S.); (L.O.); (S.L.-Z.); (M.S.B.)
- School of Psychology, Interdisciplinary Center (IDC), Herzliya 4610101, Israel
- The Nehemia Rubin Excellence in Biomedical Research—The TELEM Program, Sheba Medical Center, Tel-Hashomer 5262000, Israel
- Correspondence:
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Adeyemi JA, Ukwenya VO, Arowolo OK, Olise CC. Pesticides-induced Cardiovascular Dysfunctions: Prevalence and Associated Mechanisms. Curr Hypertens Rev 2021; 17:27-34. [PMID: 33430736 DOI: 10.2174/1573402117666210111102508] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 10/24/2020] [Accepted: 10/28/2020] [Indexed: 11/22/2022]
Abstract
Increased applications of pesticides, mainly in agriculture and public health, have resulted in increased chances of human exposure to pesticides. Chronic exposure to pesticides has been implicated in several human diseases, including cardiovascular diseases. Cardiovascular diseases are broadly used for various heart pathological conditions, including a defect in blood vessels, and they include myocardial infarction, atherosclerosis, stroke, cardiomyopathy, coronary heart disease, etc. In this review, the association between human exposure to pesticides and the development of cardiovascular diseases was discussed using epidemiological and laboratory data. The toxicokinetics of pesticides in humans was reviewed, as well as the risk factors for cardiovascular diseases. The important role of oxidative stress principally the induction of reactive oxygen species as the signaling molecules for various signaling pathways involved in pesticides-induced cardiovascular disease, was discussed.
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Affiliation(s)
- Joseph A Adeyemi
- Department of Biology, School of Sciences, Federal University of Technology, P.M.B. 704, Akure, Ondo State, Nigeria
| | - Victor O Ukwenya
- Department of Human Anatomy, School of Health and Health Technology, Federal University of Technology, P.M.B. 704, Akure, Ondo State, Nigeria
| | - Olatunbosun K Arowolo
- Department of Biology, School of Sciences, Federal University of Technology, P.M.B. 704, Akure, Ondo State, Nigeria
| | - Christian C Olise
- Department of Biology, School of Sciences, Federal University of Technology, P.M.B. 704, Akure, Ondo State, Nigeria
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Terry AI, Benitez-Kruidenier S, DeKrey GK. Effects of endosulfan isomers on cytokine and nitric oxide production by differentially activated RAW 264.7 cells. Toxicol Rep 2018; 5:396-400. [PMID: 29765866 PMCID: PMC5949890 DOI: 10.1016/j.toxrep.2018.03.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 02/22/2018] [Accepted: 03/05/2018] [Indexed: 01/08/2023] Open
Abstract
Non-cytotoxic concentrations of endosulfan suppressed NO production. Suppression of NO was a more sensitive endpoint than suppression of TNF. Endosulfan alpha had greater cytotoxic potency than endosulfan beta.
Endosulfan is an organochlorine insecticide comprised of two isomers: endosulfan-α and endosulfan-β. Endosulfan exposure has been shown to elevate some inflammatory factors, such as nitric oxide (NO) and tumor necrosis factor (TNF), in animals or cultures of animal cells. Because the two endosulfan isomers can vary in their biological activities, the goal of this study was to determine if individual endosulfan isomers differentially impact production of NO or TNF by the mouse macrophage cell RAW 264.7 at non-cytotoxic levels. We found elevated TNF with exposure to endosulfan-α (not endosulfan-β), but only at concentrations that were cytotoxic (≥100 μM), whereas neither endosulfan isomer altered baseline levels of NO at any concentration up to 300 μM. In interferon (IFN)-γ-activated cultures, NO levels were significantly suppressed by either endosulfan isomer at 10 μM (the lowest concentration examined), whereas only endosulfan-β significantly lowered TNF levels at non-cytotoxic concentrations. In lipopolysaccharide (LPS)-activated cultures, both endosulfan isomers significantly reduced NO, but not TNF, at non-cytotoxic concentrations. These results suggest that the endosulfan isomers have some capacity to alter inflammatory responses differentially, particularly with IFN-γ stimulation.
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Key Words
- AP-1, activator protein 1
- DMSO, dimethylsulfoxide
- ER, estrogen receptor
- Endosulfan
- IFN, interferon
- IL, interleukin
- Inflammation
- LPS, lipopolysaccharide
- Macrophage
- NF-κB, nuclear factor kappa-light-chain-enhancer of activated B cells
- NO, nitric oxide
- NOS2, nitric oxide synthase type 2
- Nitric oxide
- PAMP, pathogen-associated molecular pattern
- STAT, signal transducer and activator of transcription
- TNF
- TNF, tumor necrosis factor
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Affiliation(s)
- Alexander I Terry
- School of Biological Sciences, University of Northern Colorado, 501 20th Street, Greeley, CO 80639, USA
| | - Sandra Benitez-Kruidenier
- School of Biological Sciences, University of Northern Colorado, 501 20th Street, Greeley, CO 80639, USA
| | - Gregory K DeKrey
- School of Biological Sciences, University of Northern Colorado, 501 20th Street, Greeley, CO 80639, USA
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