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Hassan MA, Mahmoud YK, Elnabtiti AAS, El-Hawy AS, El-Bassiony MF, Abdelrazek HMA. Evaluation of Cadmium or Lead Exposure with Nannochloropsis oculata Mitigation on Productive Performance, Biochemical, and Oxidative Stress Biomarkers in Barki Rams. Biol Trace Elem Res 2023; 201:2341-2354. [PMID: 35705889 PMCID: PMC10020321 DOI: 10.1007/s12011-022-03318-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 06/07/2022] [Indexed: 11/24/2022]
Abstract
This study was designed to determine the lead or cadmium exposure of Barki rams and the beneficial role of Nannochlorposis oculata (N. oculata) 4% as a feed supplement, as well as its mitigating role against these elements' impacts concerning performance, biochemical markers of liver enzymes and kidney function, thyroid hormone activity, and oxidative stress markers. Six groups of 36 Barki rams (33.63 ± 1.29 kg) were divided into G1: which served as control; G2: was given 4% dietary N. oculata; G3: was given oral 1 mg/kg cadmium chloride; G4: was given 5 mg/kg/day lead acetate; G5: was given oral 1 mg/kg cadmium chloride and 4% dietary N. oculata, and G6: was given oral 5 mg/kg/day lead acetate and 4% dietary N. oculata; and treatments were continued for 60 days. Cadmium and lead-exposed groups exhibited lower and weaker weight gain as well as feed conversion ratio, respectively, than the control and other groups. Additionally, levels of T3, T4, total proteins, albumin, and glutathione (GSH) were significantly reduced in both G3 and G4 compared to control. However, urea, creatinine, ALT, AST, total cholesterol, triglycerides, protein carbonyl content (PCC), and malondialdehyde (MDA) were significantly increased (P ≤ 0.05) in cadmium and lead-exposed groups. Dietary N. oculata (4%) improves serum proteins, creatinine, urea, T4, and oxidative stress indicators as compared to the control group. Finally, 4% dietary N. oculata greatly enhances the investigated parameters in terms of performance, thyroid hormones, serum biochemical, and antioxidant activity and may assist in reducing the endocrine disrupting effects of Pb and Cd.
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Affiliation(s)
- Marwa A Hassan
- Department of Animal Hygiene, Zoonoses and Behavior, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt.
| | - Yasmina K Mahmoud
- Biochemistry Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt
| | - A A S Elnabtiti
- Animal Wealth Development Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt
| | - A S El-Hawy
- Animal and Poultry Production Division, Desert Research Center, Cairo, Egypt
| | | | - Heba M A Abdelrazek
- Department of Physiology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt
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Albeltagy RS, Dawood SM, Mumtaz F, Abdel Moneim AE, El-Habit OH. Antioxidant capacity of N-acetylcysteine against the molecular and cytotoxic implications of cadmium chloride leading to hepatotoxicity and vital progression. Environ Sci Pollut Res Int 2023; 30:23237-23247. [PMID: 36322347 PMCID: PMC9938820 DOI: 10.1007/s11356-022-23823-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 10/21/2022] [Indexed: 06/08/2023]
Abstract
Many studies have reported that cadmium (Cd) can induce liver cell injury; however, the toxicity mechanisms of Cd on the liver have not been fully explained. Thirty-two male albino rats were divided into four groups: the control group, the N-acetylcysteine (NAC) group orally as effervescent instant sachets with a concentration of 200 mg dissolved in distilled water and dosage was 200 mg/kg body weight freshly prepared, the cadmium chloride (CdCl2) group (treated with 3 mg/kg orally), and the N-acetylcysteine (NAC) + cadmium chloride group (treated with 200 mg/kg orally post to CdCl2) for 60 days. The NAC alone did not make notable changes in most of the parameters. The CdCl2 alone, compared to control, induced significant alterations in oxidative stress markers (increment in lipid peroxidation (LPO) and nitric oxide (NO)) and antioxidant defense system (decrement in superoxide dismutase (SOD), catalase (CAT), glutathione (GSH), and glutathione peroxidase (GPx)), which resulted in a downregulation of pro-apoptotic Bcl2-associated X protein (Bax) and caspase-3 and upregulation of anti-apoptotic B-cell leukemia/lymphoma 2 (Bcl2) protein as well as the survival fate of hepatic cells. Post-administration of NAC to CdCl2 resulted in a reduction in oxidative stress markers, shifting of cells from the G2/M phase to the G0/G1 inhibiting signal-regulated kinase activation, and impairment of the anti-apoptotic signaling pathway when compared to the CdCl2 group alone. Accordingly, the Bcl2/Bax ratio was reduced to 1.17-fold change, as an adaptive process to hepatic tissue injury. These findings demonstrated that NAC would attenuate the possibility of oxidative stress and cytotoxicity of hepatic tissue induced by CdCl2.
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Affiliation(s)
- Rasha S Albeltagy
- Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
| | - Shauq M Dawood
- Department of Biochemistry, College of Science, Osmania University, Telangana State, Hyderabad, India
| | - Farah Mumtaz
- Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
| | - Ahmed E Abdel Moneim
- Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt.
| | - Ola H El-Habit
- Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
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Alshehri AS, El-Kott AF, El-Kenawy AE, Zaki MSA, Morsy K, Ghanem RA, Salem ET, Ebealy ER, Khalifa HS, Altyar AE, AlGwaiz HIM, Ibrahim EH, Mahmoud MS, Dallak MA, Abd-Ella EM. The ameliorative effect of kaempferol against CdCl 2- mediated renal damage entails activation of Nrf2 and inhibition of NF-kB. Environ Sci Pollut Res Int 2022; 29:57591-57602. [PMID: 35355181 DOI: 10.1007/s11356-022-19876-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
This study evaluated the nephroprotective effect of kaempferol against cadmium chloride (CdCl2) -induced nephropathy in rats. It also investigated if activation of Nrf2 is a common mechanism of action. Adult male rats ((150 ± 15 g) were divided into 4 groups (n = 8/each) as a control (1% DMSO, orally), control + kaempferol (200 mg/kg, orally), CdCl2 (50 mg/l in drinking water), and CdCl2 + kaempferol (200 mg/kg)-treated rats. All treatments were conducted for 8 weeks. Kaempferol significantly attenuated CdCl2-induced weight loss, reduction in kidney weights, and the injury in the glomeruli, proximal tubules, and distal tubules in the treated rats. It also significantly lowered serum levels of urea and creatinine, increased urine output and urinary creatinine levels and clearance but reduced urinary levels of albumin urinary albumin exertion (UAER), and urinary albumin/creatinine ratio (UACR) in these rats. In parallel, kaempferol downregulated renal levels of cleaved caspase-3 and Bax and unregulated those of Bcl2. In the kidney tissues of the control animals and CdCl2 rats, kaempferol significantly attenuated oxidative stress, inflammation and significantly boosted levels of manganese superoxide dismutase and glutathione. Also, and in both groups, kaempferol suppressed the nuclear levels of NF-κB p65, downregulated Keap1, and stimulated the nuclear activation and protein levels of Nrf2. In conclusion, kaempferol is a potential therapeutic drug to prevent CdCl2-induced nephropathy due to its anti-inflammatory and anti-oxidant effects mediated by suppressing NF- NF-κB p65 and transactivating Nrf2.
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Affiliation(s)
- Ali S Alshehri
- Department of Biology, College of Science, King Khalid University, Abha, 61421, Saudi Arabia
| | - Attalla F El-Kott
- Department of Biology, College of Science, King Khalid University, Abha, 61421, Saudi Arabia.
- Department of Zoology, Faculty of Science, Damanhour University, Damanhour, 22511, Egypt.
| | - Ayman E El-Kenawy
- Department of Pathology, College of Medicine, Taif University, Taif, 21944, Saudi Arabia
| | - Mohamed Samir A Zaki
- Department of Anatomy, College of Medicine, King Khalid University, P.O. Box 62529, Abha, Saudi Arabia
- Department of Histology and Cell Biology, College of Medicine, Zagazig University, P.O. Box 31527, Zagazig, Egypt
| | - Kareem Morsy
- Department of Biology, College of Science, King Khalid University, Abha, 61421, Saudi Arabia
- Department of Zoology, Faculty of Science, Cairo University, Cairo, Egypt
| | - Reham A Ghanem
- Department of Oral Biology, Faculty of Oral and Dental Medicine, Delta University for Science and Technology, Gamasa, Egypt
| | - Eman T Salem
- Department of Basic Sciences, Faculty of Physical Therapy, Horus University, New Damietta, 34518, Egypt
| | - Eman R Ebealy
- Department of Biology, College of Science, King Khalid University, Abha, 61421, Saudi Arabia
| | - Heba S Khalifa
- Department of Zoology, Faculty of Science, Damanhour University, Damanhour, 22511, Egypt
| | - Ahmed E Altyar
- Department of Pharmacy Practice, Faculty of Pharmacy, King Abdulaziz University, P.O. Box 80260, Jeddah, 21589, Saudi Arabia
| | - Hussah I M AlGwaiz
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, 11474, Riyadh, Saudi Arabia
| | - Essam H Ibrahim
- Department of Biology, College of Science, King Khalid University, Abha, 61421, Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia
- Blood Products Quality Control and Research Department, National Organization for Research and Control of Biologicals, 12611, Cairo, Egypt
| | - Mohammed S Mahmoud
- Department of Zoology, College of Science, Fayoum University, Fayoum, Egypt
| | - Mohammad A Dallak
- Department of Physiology, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | - Eman M Abd-Ella
- Department of Zoology, College of Science, Fayoum University, Fayoum, Egypt
- Department of Biology, College of Science and Art, Al-Baha University, Al-Mandaq, Saudi Arabia
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A Emara A, A Sleem B, K Nageeb A, H Ahmed N, T Mohamed N, I Hassanin M, M Mohamed R, E Hassan M, R Shamroukh M, K Mohamed M, M Hassaan M, M Maddy R, S Elneklawi M, Bondok MS, Ali AA, A Hussein M. Antitumor and Protective Activity of TVLE against CdCl 2-Induced Renal Damage in Rats. Pak J Biol Sci 2022; 25:313-321. [PMID: 35638525 DOI: 10.3923/pjbs.2022.313.321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
<b>Background and Objective:</b> Cadmium is a heavy metal that has a wide range of applications in human existence. Cadmium may bind to the protein metallothionein and decrease kidney function once it enters the body. The purpose of this study was to investigate the renal protective activity of TVLE against CdCl<sub>2</sub>-induced renal toxicity in rats. <b>Materials and Methods:</b> TVLE was prepared and characterized using instrumental analysis and spectral data. Furthermore, the IC<sub>50</sub> of TVLE against the Vero renal carcinoma cell line was calculated. Adult albino rats were used to assess the renal protective activity of TVLE (150 and 300 mg kg<sup>1</sup> b.wt.) in CdCl<sub>2</sub>-treated rats. <b>Results:</b> IC<sub>50 </sub>of TVLE against Vero cell line equals 148.25 μg mL<sup>1</sup>. The daily oral administration of TVLE at concentrations of 150 and 300 mg kg<sup>1</sup> b.wt. for 21 days to CdCl<sub>2</sub>-treated rates resulted in a significant improvement in tumour volume and tumour weight, urea, creatinine, uric acid, TNF-α, NOx, TBARs, GSH, CAT, SOD, GPx and VEGF-C gene expression in CdCl<sub>2</sub>-treated rats. Furthermore, TVLE almost normalized these effects in renal histoarchitecture. <b>Conclusion:</b> The biochemical, histological and MRI examinations of the current study suggested that TVLE have renal protective activity against CdCl<sub>2</sub>-induced renal toxicity in rats.
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Okamoto A, Imamura M, Tani K, Matsumoto T. The effect of using light emitting diodes and fluorescent lamps as different light sources in growth inhibition tests of green alga, diatom, and cyanobacteria. PLoS One 2021; 16:e0247426. [PMID: 33606832 PMCID: PMC7895407 DOI: 10.1371/journal.pone.0247426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 02/07/2021] [Indexed: 11/18/2022] Open
Abstract
Aquatic organisms have been used to investigate the safety of chemicals worldwide. One such assessment is an algal growth inhibition test. Algal growth inhibition tests are commonly performed using a growth chamber with fluorescent lamps as the lighting source, as test guidelines require continuous uniform fluorescent illumination. However, fluorescent lamps contain mercury, which has been identified as hazardous to humans and other organisms. The Minamata Convention (adopted in 2013) requires reduction or prohibition of products containing mercury. On the other hand, light-emitting diodes do not contain mercury and provide a photosynthetically effective wavelength range of 400–700 nm which is an adequate light intensity for algal growth. Light-emitting diodes are thus preferable to fluorescent lamps as a potential light source in algal growth inhibition tests. In this study, we investigated if light-emitting diodes could be substituted for fluorescent lamps in growth inhibition studies with green alga (Pseudokirchneriella subcapitata), diatom (Navicula pelliculosa), and cyanobacteria (Anabaena flos-aquae). Algal growth inhibition tests were performed using five different chemicals known to have different modes of action and are assigned as reference substances in the test guidelines. The results of each algal test showed similar values between light-emitting diodes and fluorescent lamps in terms of conditions for the growth inhibition rate and percent inhibition in yield of each chemical. It was therefore concluded that using light-emitting diodes instead of fluorescent lamps as a lighting source had no effect on the algal growth inhibition test results.
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Affiliation(s)
- Akira Okamoto
- Department of Environmental Science & Toxicology, Nippon Soda Co., Ltd., Odawara, Kanagawa, Japan
- * E-mail:
| | - Miyuki Imamura
- Department of Environmental Science & Toxicology, Nippon Soda Co., Ltd., Odawara, Kanagawa, Japan
| | - Kazune Tani
- Department of Environmental Science & Toxicology, Nippon Soda Co., Ltd., Odawara, Kanagawa, Japan
| | - Takeru Matsumoto
- Department of Environmental Science & Toxicology, Nippon Soda Co., Ltd., Odawara, Kanagawa, Japan
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Che L, Yang CL, Chen Y, Wu ZL, Du ZB, Wu JS, Gan CL, Yan SP, Huang J, Guo NJ, Lin YC, Lin ZN. Mitochondrial redox-driven mitofusin 2 S-glutathionylation promotes neuronal necroptosis via disrupting ER-mitochondria crosstalk in cadmium-induced neurotoxicity. Chemosphere 2021; 262:127878. [PMID: 33182097 DOI: 10.1016/j.chemosphere.2020.127878] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 07/26/2020] [Accepted: 07/29/2020] [Indexed: 06/11/2023]
Abstract
Reactive oxygen species (ROS)-mediated endoplasmic reticulum (ER) stress and mitochondrial dysfunction are known to affect the structural and functional damage in the neural system. Cadmium (Cd) is an environmental contaminant that is widely found in numerous environmental matrices and exhibits potential neurotoxic risk. However, it remains unclear how mitochondrial redox status induces, and whether Cd destabilizes, the ER-mitochondria crosstalk to have a toxic effect on the nervous system. Herein, in our present study, bioinformatics analysis revealed an important role of protein interaction and mitochondrial machinery in brain samples from Alzheimer's disease (AD) patients. Furthermore, we established a neurotoxicity model in vivo and in vitro induced by cadmium chloride (CdCl2). We demonstrated that CdCl2 exposure disrupts the balance in mitochondrial redox represented by enhanced mitochondrial ROS (mitoROS) levels, which enhance mitofusin 2 (Mfn2) S-glutathionylation and interrupt the mitochondria-associated ER membranes (MAMs) for crosstalk between the ER and mitochondria to induce neuronal necroptosis. Mechanistically, it was shown that CdCl2 exposure significantly enhances the mitochondria-associated degradation (MAD) of Mfn2 via S-glutathionylation, which inhibits Mfn2 localization to the MAMs and subsequently leads to the formation of the RIPK1-RIPK3-p-MLKL complex (a key component of the necrosome) at MAMs, to promote neuronal necroptosis. Furthermore, the glutaredoxin 1 (Grx1) catalyzed and Mfn2 overexpression restored S-glu-Mfn2, MAMs perturbation, necrosome formation, and necroptosis in neurons induced by CdCl2 exposure in vitro. Moreover, the intervention with antioxidants to reduce mitochondrial redox, such as N-acetyl-l-cysteine (NAC) and mitochondria-targeted antioxidant Mito-TEMPO, reduced the S-glutathionylation of Mfn2 involved in the antagonism of CdCl2-induced necroptosis and neurotoxicity in vivo and in vitro. Taken together, our results are the first time to demonstrate that S-glutathionylation of Mfn2 promotes neuronal necroptosis via disruption of ER-mitochondria crosstalk in CdCl2-induced neurotoxicity, providing the novel mechanistic insight into how hazardous chemical-induced adverse effects in various organs and tissues could be interpreted by intraorganellar pathways under the control of MAMs components in neurons.
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Affiliation(s)
- Lin Che
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Chuan-Li Yang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Yu Chen
- School of Medicine, Xiamen University, Xiamen, 361102, China
| | - Zi-Li Wu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Ze-Bang Du
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Jia-Shen Wu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Cong-Ling Gan
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Si-Ping Yan
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Jing Huang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Ni-Jun Guo
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Yu-Chun Lin
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, China.
| | - Zhong-Ning Lin
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, China.
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Al-Khayri JM, Naik PM. Elicitor-Induced Production of Biomass and Pharmaceutical Phenolic Compounds in Cell Suspension Culture of Date Palm ( Phoenix dactylifera L.). Molecules 2020; 25:E4669. [PMID: 33066253 PMCID: PMC7587379 DOI: 10.3390/molecules25204669] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 10/07/2020] [Accepted: 10/08/2020] [Indexed: 12/13/2022] Open
Abstract
Plants that synthesize bioactive compounds that have high antioxidant value and elicitation offer a reliable in vitro technique to produce important nutraceutical compounds. The objective of this study is to promote the biosynthesis of these phenolic compounds on a large scale using elicitors in date palm cell suspension culture. Elicitors such as pectin, yeast extract (YE), salicylic acid (SA), cadmium chloride (CdCl2), and silver nitrate (AgNO3) at 50, 100, and 200 mg/L concentrations are used. The effects of elicitors on cell culture were determined in terms of biomass [packed cell volume (PCV), fresh and dry weight], antioxidant activity, and phenolic compounds (catechin, caffeic acid, kaempferol, apigenin) were determined using high-performance liquid chromatography (HPLC). Results revealed that enhanced PCV (12.3%), total phenolic content [317.9 ± 28.7 mg gallic acid equivalents (GAE)/100 g of dry weight (DW)], and radical scavenging activity (86.0 ± 4.5%) were obtained in the 50 mg/L SA treated cell culture of Murashige and Skoog (MS) medium. The accumulation of optimum catechin (26.6 ± 1.3 µg/g DW), caffeic acid (31.4 ± 3.8 µg/g DW), and kaempferol (13.6 ± 1.6 µg/g DW) was found in the 50 mg/L SA-treated culture when compared to the control. These outcomes could be of great importance in the nutraceutical and agronomic industries.
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Affiliation(s)
- Jameel Mohammed Al-Khayri
- Department of Agricultural Biotechnology, College of Agriculture and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
| | - Poornananda Madhava Naik
- Department of Agricultural Biotechnology, College of Agriculture and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
- Department of Botany, Karnatak University, Dharwad 580003, India
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Abstract
BACKGROUND AND OBJECTIVE Infertility in couples is rated one in every eight couple worldwide which affects 15% of couples and a male factor is found to be solely responsible or in conjunction with a female factor in 50% of cases. The natural chemicals found in rocca and red cabbage leaves breakdown into compounds like indole-3-carbinol, which has anti-cancer property. Flavonoids of the crop have good therapeutic potential in inflammation and pain. Meanwhile, this investigation aimed to evaluate the effect of rocca leaves and red cabbage leaves on male infertility rats. MATERIALS AND METHODS Thirty-six adult male Sprague Dawley rats were divided into six groups. Group 1: Normal rats fed on basal diet as control negative (C-), Group 2: Control positive C+, in which infertility rats were fed on basal diet. Group 3: Infertility rats fed on basal diet and 5% rocca leaves. Group 4: Infertility rats fed on basal diet and 10% rocca leaves. Group 5: Infertility rats fed on basal diet and 5% red cabbage leaves. Group 6: Infertility rats fed on basal diet and 10% red cabbage leaves. At the end of experiment, after 28 days of feeding, all serum samples were analyzed for biochemical parameters. RESULTS Injection with cadmium chloride caused a significant increase in the level of glucose, urea, creatinine, uric acid, AST, ALT, ALP, total cholesterol, triglycerides, LDLc, VLDLc, AI, Glob, TB, IB, DB and LH hormone while a significant decrease was recorded in HDLc, testosterone, FSH hormones, TP and Alb. Meanwhile, in infertility rats then treated with rocca leaves 5 and 10% and red cabbage leaves at the same doses 5 and 10% caused significant improvement in all tested parameters. CONCLUSION The obtained results demonstrated that rocca leaves and red cabbage leaves had significant improvement in testosterone, Follicle-stimulating hormone, luteinizing hormone, total protein, albumin and lipids profile in cadmium chloride induced infertility in rats.
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Ramakrishna Y, Sadeghi SG. Activation of GABA B receptors results in excitatory modulation of calyx terminals in rat semicircular canal cristae. J Neurophysiol 2020; 124:962-972. [PMID: 32816581 PMCID: PMC7509296 DOI: 10.1152/jn.00243.2020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 12/15/2022] Open
Abstract
Previous studies have found GABA in vestibular end organs. However, existence of GABA receptors or possible GABAergic effects on vestibular nerve afferents has not been investigated. The current study was conducted to determine whether activation of GABAB receptors affects calyx afferent terminals in the central region of the cristae of semicircular canals. We used patch-clamp recording in postnatal day 13-18 (P13-P18) Sprague-Dawley rats of either sex. Application of GABAB receptor agonist baclofen inhibited voltage-sensitive potassium currents. This effect was blocked by selective GABAB receptor antagonist CGP 35348. Application of antagonists of small (SK)- and large-conductance potassium (BK) channels almost completely blocked the effects of baclofen. The remaining baclofen effect was blocked by cadmium chloride, suggesting that it could be due to inhibition of voltage-gated calcium channels. Furthermore, baclofen had no effect in the absence of calcium in the extracellular fluid. Inhibition of potassium currents by GABAB activation resulted in an excitatory effect on calyx terminal action potential firing. While in the control condition calyces could only fire a single action potential during step depolarizations, in the presence of baclofen they fired continuously during steps and a few even showed repetitive discharge. We also found a decrease in threshold for action potential generation and a decrease in first-spike latency during step depolarization. These results provide the first evidence for the presence of GABAB receptors on calyx terminals, showing that their activation results in an excitatory effect and that GABA inputs could be used to modulate calyx response properties.NEW & NOTEWORTHY Using in vitro whole cell patch-clamp recordings from calyx terminals in the vestibular end organs, we show that activation of GABAB receptors result in an excitatory effect, with decreased spike-frequency adaptation and shortened first-spike latencies. Our results suggest that these effects are mediated through inhibition of calcium-sensitive potassium channels.
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Affiliation(s)
- Yugandhar Ramakrishna
- Center for Hearing and Deafness, Department of Communicative Disorders and Sciences, State University of New York at Buffalo, Buffalo, New York
- Department of Communication Disorders and Sciences, California State University, Northridge, Northridge, California
| | - Soroush G Sadeghi
- Center for Hearing and Deafness, Department of Communicative Disorders and Sciences, State University of New York at Buffalo, Buffalo, New York
- Neuroscience Program, State University of New York at Buffalo, Buffalo, New York
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Hu K, Xie W, Ni S, Yan S, Tian G, Qi W, Duan Y. Cadmium chloride enhances cisplatin sensitivity in osteosarcoma cells by reducing FOXM1 expression. Oncol Rep 2020; 44:650-660. [PMID: 32627005 PMCID: PMC7336512 DOI: 10.3892/or.2020.7632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Accepted: 04/02/2020] [Indexed: 02/05/2023] Open
Abstract
Osteosarcoma is a highly malignant disease and is associated with a poor patient prognosis and a high mortality rate. Disease prognosis significantly correlates with chemotherapeutic responses. Cadmium is a heavy metal with specific effects on bone, but its benefits for osteosarcoma treatment have not been characterized. In the present study, cadmium chloride was used to treat MG63 osteosarcoma cells, and their gene expression profiles were assessed by GeneChip technology. We found that forkhead box protein M1 (FOXM1) was downregulated by cadmium chloride, and lentiviral‑mediated silencing of FOXM1 confirmed a role for this factor in the cisplatin resistance of MG63 cells. In nude mice, cadmium chloride enhanced the sensitivity of osteosarcoma to cisplatin, an effect mediated by FOXM1. Collectively, these data indicate that cadmium chloride can alter the sensitivity of osteosarcoma cells to cisplatin through FOXM1, highlighting it as a potential therapeutic target and prognostic factor for osteosarcoma.
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Affiliation(s)
- Konghe Hu
- Department of Spine Surgery, The Affiliated Yuebei People's Hospital of Shantou University Medical College, Shaoguan, Guangdong 512025, P.R. China
| | - Wenquan Xie
- Department of Spine Surgery, The Affiliated Yuebei People's Hospital of Shantou University Medical College, Shaoguan, Guangdong 512025, P.R. China
| | - Songjia Ni
- Department of Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China
| | - Shumin Yan
- Department of Spine Surgery, The Affiliated Yuebei People's Hospital of Shantou University Medical College, Shaoguan, Guangdong 512025, P.R. China
| | - Gaoqiang Tian
- Department of Spine Surgery, The Affiliated Yuebei People's Hospital of Shantou University Medical College, Shaoguan, Guangdong 512025, P.R. China
| | - Weizhong Qi
- Department of Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China
- Correspondence to: Dr Weizhong Qi or Dr Yang Duan, Department of Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China, E-mail: , E-mail:
| | - Yang Duan
- Department of Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China
- Correspondence to: Dr Weizhong Qi or Dr Yang Duan, Department of Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China, E-mail: , E-mail:
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11
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Cheaib B, Seghouani H, Ijaz UZ, Derome N. Community recovery dynamics in yellow perch microbiome after gradual and constant metallic perturbations. Microbiome 2020; 8:14. [PMID: 32041654 PMCID: PMC7011381 DOI: 10.1186/s40168-020-0789-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 01/19/2020] [Indexed: 05/11/2023]
Abstract
BACKGROUND The eco-evolutionary processes ruling post-disturbance microbial assembly remain poorly studied, particularly in host-microbiome systems. The community recovery depends not only on the type, duration, intensity, and gradient of disturbance, but also on the initial community structure, phylogenetic composition, legacy, and habitat (soil, water, host). In this study, yellow perch (Perca flavescens) juveniles were exposed over 90 days to constant and gradual sublethal doses of cadmium chloride. Afterward, the exposure of aquaria tank system to cadmium was ceased for 60 days. The skin, gut and water tank microbiomes in control and treatment groups, were characterized before, during and after the cadmium exposure using 16s rDNA libraries and high throughput sequencing technology (Illumina, Miseq). RESULTS Our data exhibited long-term bioaccumulation of cadmium salts in the liver even after two months since ceasing the exposure. The gradient of cadmium disturbance had differential effects on the perch microbiota recovery, including increases in evenness, taxonomic composition shifts, as well as functional and phylogenetic divergence. The perch microbiome reached an alternative stable state in the skin and nearly complete recovery trajectories in the gut communities. The recovery of skin communities showed a significant proliferation of opportunistic fish pathogens (i.e., Flavobacterium). Our findings provide evidence that neutral processes were a much more significant contributor to microbial community turnover in control treatments than in those treated with cadmium, suggesting the role of selective processes in driving community recovery. CONCLUSIONS The short-term metallic disturbance of fish development has important long-term implications for host health. The recovery of microbial communities after metallic exposure depends on the magnitude of exposure (constant, gradual), and the nature of the ecological niche (water, skin, and gut). The skin and gut microbiota of fish exposed to constant concentrations of cadmium (CC) were closer to the control negative than those exposed to the gradual concentrations (CV). Overall, our results show that the microbial assembly during the community recovery were both orchestrated by neutral and deterministic processes. Video Abtract.
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Affiliation(s)
- Bachar Cheaib
- Institut de Biologie Intégrative et des Systèmes (IBIS), Pavillon Charles-Eugène Marchand, Université Laval, 1030, avenue de la Médecine, Québec, QC G1V 0A6 Canada
- School of Engineering, University of Glasgow, Glasgow, G12 8QQ Scotland
| | - Hamza Seghouani
- Institut de Biologie Intégrative et des Systèmes (IBIS), Pavillon Charles-Eugène Marchand, Université Laval, 1030, avenue de la Médecine, Québec, QC G1V 0A6 Canada
| | - Umer Zeeshan Ijaz
- School of Engineering, University of Glasgow, Glasgow, G12 8QQ Scotland
| | - Nicolas Derome
- Institut de Biologie Intégrative et des Systèmes (IBIS), Pavillon Charles-Eugène Marchand, Université Laval, 1030, avenue de la Médecine, Québec, QC G1V 0A6 Canada
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12
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Milanick WJ, Polo-Parada L, Dantzler HA, Kline DD. Activation of alpha-1 adrenergic receptors increases cytosolic calcium in neurones of the paraventricular nucleus of the hypothalamus. J Neuroendocrinol 2019; 31:e12791. [PMID: 31494990 PMCID: PMC7003713 DOI: 10.1111/jne.12791] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 08/22/2019] [Accepted: 09/04/2019] [Indexed: 12/15/2022]
Abstract
Norepinephrine (NE) activates adrenergic receptors (ARs) in the hypothalamic paraventricular nucleus (PVN) to increase excitatory currents, depolarise neurones and, ultimately, augment neuro-sympathetic and endocrine output. Such cellular events are known to potentiate intracellular calcium ([Ca2+ ]i ); however, the role of NE with respect to modulating [Ca2+ ]i in PVN neurones and the mechanisms by which this may occur remain unclear. We evaluated the effects of NE on [Ca2+ ]i of acutely isolated PVN neurones using Fura-2 imaging. NE induced a slow increase in [Ca2+ ]i compared to artificial cerebrospinal fluid vehicle. NE-induced Ca2+ elevations were mimicked by the α1 -AR agonist phenylephrine (PE) but not by α2 -AR agonist clonidine (CLON). NE and PE but not CLON also increased the overall number of neurones that increase [Ca2+ ]i (ie, responders). Elimination of extracellular Ca2+ or intracellular endoplasmic reticulum Ca2+ stores abolished the increase in [Ca2+ ]i and reduced responders. Blockade of voltage-dependent Ca2+ channels abolished the α1 -AR induced increase in [Ca2+ ]i and number of responders, as did inhibition of phospholipase C inhibitor, protein kinase C and inositol triphosphate receptors. Spontaneous phasic Ca2+ events, however, were not altered by NE, PE or CLON. Repeated K+ -induced membrane depolarisation produced repetitive [Ca2+ ]i elevations. NE and PE increased baseline Ca2+ , whereas NE decreased the peak amplitude. CLON also decreased peak amplitude but did not affect baseline [Ca2+ ]i . Taken together, these data suggest receptor-specific influence of α1 and α2 receptors on the various modes of calcium entry in PVN neurones. They further suggest Ca2+ increase via α1 -ARs is co-dependent on extracellular Ca2+ influx and intracellular Ca2+ release, possibly via a phospholipase C inhibitor-mediated signalling cascade.
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Affiliation(s)
- William J. Milanick
- Department of Biomedical Sciences, University of Missouri, Columbia MO 65211
- Dalton Cardiovascular Research Center, University of Missouri, Columbia MO 65211
| | - Luis Polo-Parada
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia MO 65211
- Dalton Cardiovascular Research Center, University of Missouri, Columbia MO 65211
| | - Heather A. Dantzler
- Department of Biomedical Sciences, University of Missouri, Columbia MO 65211
- Dalton Cardiovascular Research Center, University of Missouri, Columbia MO 65211
| | - David D. Kline
- Department of Biomedical Sciences, University of Missouri, Columbia MO 65211
- Dalton Cardiovascular Research Center, University of Missouri, Columbia MO 65211
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13
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Mohamed NES. Effect of Aqueous Extract of Glycyrrhiza glabra on the Biochemical Changes Induced by Cadmium Chloride in Rats. Biol Trace Elem Res 2019; 190:87-94. [PMID: 30251228 DOI: 10.1007/s12011-018-1525-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 09/13/2018] [Indexed: 11/29/2022]
Abstract
Twenty four rats were divided into four groups (6 rats/group): 1-control group; 2-licorice (Glycyrrhiza glabra) extract: rats administered with an oral dose of licorice (3 mg/ml/kg/day) using stomach tube for 4 weeks; 3-cadmium chloride group: rats administered with an oral dose of CdCl2 (10 mg/kg/day) using stomach tube for 4 weeks; and 4-licorice extract + CdCl2 group: rats administered orally with both licorice (3 mg/ml/kg/day) and CdCl2 (10 mg/kg/day) using stomach tube for 4 weeks. Administration of CdCl2 induced significant increase in thiobarbituric acid reactive substance (TBARS), paraoxonase-1 (proxon-1), caspase-3 (casp-3) activities, and significant decrease in superoxide dismutase (SOD), catalase (CAT) activities, and glutathione (GSH) content in hepatic tissue. Significant increase in TBARS and kidney injury molecule-1 (KIM-1) and significant decrease in SOD, CAT activities, and GSH content in renal tissue were recorded. Significant increase in alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), gamma glutamyl transferase (GGT) activities, urea, creatinine, and significant decrease in butyryl choline esterase (BChE), total triiodothyronine (T3), and total thyroxin (T4) were recorded in serum. Histological investigation of renal cells showed vacuolations of endothelium lining glomerular tuffs and vacuolations of epithelium lining renal tubules. Investigation of ovarian tissue showed dilatation of interstitial blood vessels and congestion of multiple corpus luteum in CdCl2-treated rats. Significant improvements in the biochemical and histological changes were observed in CdCl2 + licorice extract group. It could be concluded that licorice extract alleviates the hazardous effects of cadmium chloride, which may be attributed to its antioxidant properties.
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Affiliation(s)
- Naglaa El-Shahat Mohamed
- Biological Applications Department, Nuclear Research Center, Atomic Energy Authority, P. No.13759, Abou Zaabel, Qalyoubiah, Egypt.
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14
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Luparello C. Effect of Manganese Chloride and of Cotreatment with Cadmium Chloride on the In Vitro Proliferative, Motile and Invasive Behavior of MDA-MB231 Breast Cancer Cells. Molecules 2019; 24:E1205. [PMID: 30934784 PMCID: PMC6480135 DOI: 10.3390/molecules24071205] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 03/21/2019] [Accepted: 03/25/2019] [Indexed: 12/14/2022] Open
Abstract
We examined the dose⁻response effect of MnCl₂ on the proliferative behavior of triple-negative breast cancer MDA-M231 cells vs. immortalized HB2 cells from breast epithelium taken as nontumoral counterparts. We also tested the effect of MnCl₂ on tumor cell invasiveness in vitro by evaluating the relative invasion indexes through Boyden chamber assays. Moreover, we checked whether cotreatment with both MnCl₂ and CdCl₂ could modify the observed biological response by MDA-MB231 cells. Our results show a promotional impact of MnCl₂ on cell proliferation, with 5 µM concentration inducing the more pronounced increase after 96-h exposure, which is not shared by HB2 cells. Exposure to 5 µM MnCl₂ induced also an elevation of the relative invasion index of cancer cells. The Mn-mediated stimulatory effects were counteracted by cotreatment with CdCl₂. These data support the concept that human exposure to high environmental concentrations of Mn may increase the risk of carcinogenesis and metastasis by prompting the expansion and dissemination of triple-negative breast cancer cells. On the other hand, the Mn-counteracting anticancer property of Cd looks promising and deserves a more detailed characterization of the involved intracellular targets aimed to the molecular modeling of specific antineoplastic agents against malignant breast cancer spreading.
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Affiliation(s)
- Claudio Luparello
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, 90128 Palermo, Italy.
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15
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Wu L, Wei Q, Lv Y, Xue J, Zhang B, Sun Q, Xiao T, Huang R, Wang P, Dai X, Xia H, Li J, Yang X, Liu Q. Wnt/β-Catenin Pathway Is Involved in Cadmium-Induced Inhibition of Osteoblast Differentiation of Bone Marrow Mesenchymal Stem Cells. Int J Mol Sci 2019; 20:ijms20061519. [PMID: 30917596 PMCID: PMC6471709 DOI: 10.3390/ijms20061519] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 03/18/2019] [Accepted: 03/22/2019] [Indexed: 12/15/2022] Open
Abstract
Cadmium is a common environmental pollutant that causes bone damage. However, the effects of cadmium on the osteogenic differentiation of bone marrow mesenchymal stem cells (BMMSCs) and its mechanism of action in this process are unclear. Here, we determined the effects of cadmium chloride (CdCl₂) on the osteogenic differentiation of BMMSCs and the potential mechanism involved in this process. As determined in the present investigation, CdCl₂, in a concentration-dependent manner, affected the viability of BMMSCs and their cytoskeletons. Exposure to 0.1 or 0.2 µM CdCl₂ inhibited osteogenic differentiation of BMMSCs, which was reflected in the down-regulation of osteoblast-related genes (ALP, OCN, Runx2, OSX, and OPN); in suppression of the protein expression of alkaline phosphatase (ALP) and runt-related transcription factor 2 (Runx2); and in decreased ALP activity and capacity for mineralization. Moreover, mRNA microarray was performed to determine the roles of these factors in BMMSCs treated with CdCl₂ in comparison to control BMMSCs. As determined with the microarrays, the Wingless-type (Wnt), mothers against decapentaplegic and the C. elegans gene Sam (SMAD), and Janus kinase-Signal Transducers and Activators of Transcription (JAK-STAT) signaling pathways were involved in the effects caused by CdCl₂. Moreover, during differentiation, the protein levels of Wnt3a, β-catenin, lymphoid enhancer factor 1 (LEF1), and T-cell factor 1 (TCF1) were reduced by CdCl₂. The current research shows that CdCl₂ suppresses the osteogenesis of BMMSCs via inhibiting the Wnt/β-catenin pathway. The results establish a previously unknown mechanism for bone injury induced by CdCl₂.
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Affiliation(s)
- Lu Wu
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Qinzhi Wei
- Food Safety and Health Research Center, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China.
| | - Yingjian Lv
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China.
| | - Junchao Xue
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Bo Zhang
- Food Safety and Health Research Center, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China.
| | - Qian Sun
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Tian Xiao
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Rui Huang
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China.
| | - Ping Wang
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China.
| | - Xiangyu Dai
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Haibo Xia
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Junjie Li
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Xingfen Yang
- Food Safety and Health Research Center, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China.
| | - Qizhan Liu
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
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16
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Badr GM, Elsawy H, Sedky A, Eid R, Ali A, Abdallah BM, Alzahrani AM, Abdel-Moneim AM. Protective effects of quercetin supplementation against short-term toxicity of cadmium-induced hematological impairment, hypothyroidism, and testicular disturbances in albino rats. Environ Sci Pollut Res Int 2019; 26:8202-8211. [PMID: 30697654 DOI: 10.1007/s11356-019-04276-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 01/16/2019] [Indexed: 06/09/2023]
Abstract
The aim of this study was to evaluate the probable protective effect of quercetin (QUE) against cadmium (Cd)-induced sub-chronic toxicity in rats. Adult male rats were given either Cd (as cadmium chloride; 5 mg/kg) alone or in combination with QUE (50 mg/kg) daily for 4 weeks by oral gavage. At the end of the experimental period, Cd accumulation, and selected hematological, thyroid, and reproductive markers were assessed. Results revealed that Cd treatment significantly increased Cd concentrations in blood, thyroid gland, and testicular tissue of rats. Cd also caused a decline in hemoglobin content, hematocrit value, and total erythrocyte and leucocyte counts. Further, significant suppressions in the blood levels of hormones related to thyroid gland function, and male reproductive hormones (i.e., testosterone, luteinizing hormone and follicle-stimulating hormone), were observed in Cd-treated rats compared to the control. In parallel, low sperm count and sperm motility, increased sperm abnormalities, and marked pathology occurred in testis. Combination with QUE recorded amelioration of the deleterious effects of Cd, involving regulation of hematological toxicity and thyroid hormonal levels and subsequently modulation of testicular function. In conclusion, it appears that dietary QUE can rescue from Cd-induced hematological dysfunctions and testicular damage by reversing the hypothyroid state.
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Affiliation(s)
- Gehan M Badr
- Department of Biological Sciences, Faculty of Science, College of Science, King Faisal University, Hofuf, Al-Ahsa, 31982, Saudi Arabia
- Department of Zoology, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Hany Elsawy
- Department of Chemistry, Faculty of Science, King Faisal University, Hofuf, Al-Ahsa, Saudi Arabia
- Department of Chemistry, Faculty of Science, Tanta University, Tanta, Egypt
| | - Azza Sedky
- Department of Biological Sciences, Faculty of Science, College of Science, King Faisal University, Hofuf, Al-Ahsa, 31982, Saudi Arabia
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Rania Eid
- Department of Physiology, Faculty of Medicine, Aswan University, Aswan, Egypt
| | - Awatef Ali
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Basem M Abdallah
- Department of Biological Sciences, Faculty of Science, College of Science, King Faisal University, Hofuf, Al-Ahsa, 31982, Saudi Arabia
- Endocrine Research (KMEB), Department of Endocrinology, Odense University Hospital and University of Southern Denmark, Odense, Denmark
| | - Abdullah M Alzahrani
- Department of Biological Sciences, Faculty of Science, College of Science, King Faisal University, Hofuf, Al-Ahsa, 31982, Saudi Arabia
| | - Ashraf M Abdel-Moneim
- Department of Biological Sciences, Faculty of Science, College of Science, King Faisal University, Hofuf, Al-Ahsa, 31982, Saudi Arabia.
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt.
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17
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Muszyńska E, Labudda M, Hanus-Fajerska E. Changes in proteolytic activity and protein carbonylation in shoots of Alyssum montanum ecotypes under multi-metal stress. J Plant Physiol 2019; 232:61-64. [PMID: 30537613 DOI: 10.1016/j.jplph.2018.11.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 10/31/2018] [Accepted: 11/16/2018] [Indexed: 05/11/2023]
Abstract
The aim of present study was to evaluate the proteolytic response of metallicolous (M) and nonmetallicolous (NM) ecotypes of Alyssum montanum under heavy metals (HMs) stress. Therefore, shoot cultures of tested species grown on medium enriched simultaneously with 0.7 mM ZnSO4, 3.0 μM Pb(NO3)2 and 16.4 μM CdCl2 and these concentration corresponded to the content of their soluble forms marked in calamine substrate. After 8 weeks of cultivation, the overall protease activity (azocaseinolytic) and determination of the proteolytic (gelatinolytic) enzymes profile were estimated in HMs-treated and untreated specimens. The proteins of NM specimens were more susceptible to proteolysis induced by HMs than proteins of M ones. It was found that applied HMs ions caused an increase of protease activity in HMs-treated shoots of NM ecotype that was accompanied by diminished total soluble proteins content and their higher carbonylation. In contrast, the activities of the neutral proteases and metal-dependent serine proteases decreased in HMs-treated shoots of M ecotype. Our results have revealed significant differences at the protein metabolism level in contrasting A. montanum ecotypes cultured in vitro in the presence of HMs.
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Affiliation(s)
- Ewa Muszyńska
- Department of Botany, Faculty of Agriculture and Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, 02-776, Warsaw, Poland
| | - Mateusz Labudda
- Department of Biochemistry, Faculty of Agriculture and Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, 02-776, Warsaw, Poland.
| | - Ewa Hanus-Fajerska
- Unit of Botany and Plant Physiology, Institute of Plant Biology and Biotechnology, University of Agriculture in Krakow, Al. 29 Listopada 54, 31-425, Krakow, Poland
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18
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Mao T, Han C, Wei B, Zhao L, Zhang Q, Deng R, Liu J, Luo Y, Zhang Y. Protective Effects of Quercetin Against Cadmium Chloride-Induced Oxidative Injury in Goat Sperm and Zygotes. Biol Trace Elem Res 2018; 185:344-355. [PMID: 29397540 DOI: 10.1007/s12011-018-1255-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 01/23/2018] [Indexed: 02/06/2023]
Abstract
Quercetin, a plant-derived flavonoid, is frequently used as an antioxidant for efficient anti-oxidative capacity. However, whether quercetin has protective effects on goat sperm and preimplantation embryos against Cd2+-induced oxidative injury is still unclear. So, we researched the influence of quercetin on goat sperm and zygotes respectively under the oxidative stress induced by Cd2+. In our study, quercetin decreased the malonaldehyde (MDA) and reactive oxygen species (ROS) levels caused by Cd2+ in goat sperm (p < 0.05), which facilitated sperm characteristics including motility, survival rates, membrane integrity, and mitochondria activity during storage in vitro and subsequent embryo development (p < 0.05). Moreover, in goat zygotes, quercetin decreased peroxidation products including ROS, MDA, and carbonyl through preserving or maintaining mitochondrial function, gene expression, and anti-oxidative products such as glutathione peroxidase, superoxide dismutase, and catalase, which ameliorated subsequent embryo development and embryo quality (p < 0.05). Taken together, these results suggest that quercetin protects both goat sperm and preimplantation embryos from Cd2+-induced oxidative stress.
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Affiliation(s)
- Tingchao Mao
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Taicheng Road, Yangling, Xianyang, Shaanxi, 712100, China
| | - Chengquan Han
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Taicheng Road, Yangling, Xianyang, Shaanxi, 712100, China
| | - Biao Wei
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Taicheng Road, Yangling, Xianyang, Shaanxi, 712100, China
| | - Lu Zhao
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Taicheng Road, Yangling, Xianyang, Shaanxi, 712100, China
| | - Qing Zhang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Taicheng Road, Yangling, Xianyang, Shaanxi, 712100, China
| | - Ruizhi Deng
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Taicheng Road, Yangling, Xianyang, Shaanxi, 712100, China
| | - Jun Liu
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Taicheng Road, Yangling, Xianyang, Shaanxi, 712100, China.
| | - Yan Luo
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Taicheng Road, Yangling, Xianyang, Shaanxi, 712100, China
| | - Yong Zhang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Taicheng Road, Yangling, Xianyang, Shaanxi, 712100, China
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19
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Normann C, Frase S, Haug V, von Wolff G, Clark K, Münzer P, Dorner A, Scholliers J, Horn M, Vo Van T, Seifert G, Serchov T, Biber K, Nissen C, Klugbauer N, Bischofberger J. Antidepressants Rescue Stress-Induced Disruption of Synaptic Plasticity via Serotonin Transporter-Independent Inhibition of L-Type Calcium Channels. Biol Psychiatry 2018; 84:55-64. [PMID: 29174591 DOI: 10.1016/j.biopsych.2017.10.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 09/29/2017] [Accepted: 10/11/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND Long-term synaptic plasticity is a basic ability of the brain to dynamically adapt to external stimuli and regulate synaptic strength and ultimately network function. It is dysregulated by behavioral stress in animal models of depression and in humans with major depressive disorder. Antidepressants have been shown to restore disrupted synaptic plasticity in both animal models and humans; however, the underlying mechanism is unclear. METHODS We examined modulation of synaptic plasticity by selective serotonin reuptake inhibitors (SSRIs) in hippocampal brain slices from wild-type rats and serotonin transporter (SERT) knockout mice. Recombinant voltage-gated calcium (Ca2+) channels in heterologous expression systems were used to determine the modulation of Ca2+ channels by SSRIs. We tested the behavioral effects of SSRIs in the chronic behavioral despair model of depression both in the presence and in the absence of SERT. RESULTS SSRIs selectively inhibited hippocampal long-term depression. The inhibition of long-term depression by SSRIs was mediated by a direct block of voltage-activated L-type Ca2+ channels and was independent of SERT. Furthermore, SSRIs protected both wild-type and SERT knockout mice from behavioral despair induced by chronic stress. Finally, long-term depression was facilitated in animals subjected to the behavioral despair model, which was prevented by SSRI treatment. CONCLUSIONS These results showed that antidepressants protected synaptic plasticity and neuronal circuitry from the effects of stress via a modulation of Ca2+ channels and synaptic plasticity independent of SERT. Thus, L-type Ca2+ channels might constitute an important signaling hub for stress response and for pathophysiology and treatment of depression.
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Affiliation(s)
- Claus Normann
- Department of Psychiatry, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany.
| | - Sibylle Frase
- Department of Psychiatry, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany
| | - Verena Haug
- Department of Psychiatry, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany
| | - Gregor von Wolff
- Department of Psychiatry, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany
| | - Kristin Clark
- Department of Psychiatry, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany
| | - Patrick Münzer
- Institute of Biology, University of Freiburg, Freiburg, Germany
| | - Alexandra Dorner
- Department of Psychiatry, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany
| | - Jonas Scholliers
- Department of Psychiatry, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany
| | - Max Horn
- Department of Psychiatry, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany
| | - Tanja Vo Van
- Department of Psychiatry, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany
| | - Gabriel Seifert
- Department of Psychiatry, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany
| | - Tsvetan Serchov
- Department of Psychiatry, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany
| | - Knut Biber
- Department of Psychiatry, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany
| | - Christoph Nissen
- Department of Psychiatry, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany
| | - Norbert Klugbauer
- Institute of Experimental and Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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20
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Yuan L, Han G. [Effects of cadmium chloride on mitochondrial function and PGC-1α expression in HK-2 cells]. Wei Sheng Yan Jiu 2018; 47:290-295. [PMID: 29903286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To observe the effects of cadmium chloride on mitochondrial function and the expression of PGC-1α in HK-2 cells, and explore the possible role of cadmium chloride in the process of mitochondrial oxidative damage of HK-2 cells. METHODS HK-2 cells were exposed to 0, 10, 20, 30, 40, 50 and 60 μmol/L of CdCl_2 respectively for 24 h in vitro. MTT assay was used to observe the viability of HK-2 cells. The mitochondrial ROS was detected by Mito SOXTMRed staining. Mitochondrial membrane potential was measured by JC-1 staining flow cytometry. The activity of respiratory chain complex III was determined by Multi-functional microplate reader and PGC-1α expression was detected by Western blot analysis. RESULTS Compared with control, CdCl_2 treatment at 20 and 60 μmol/L for 24 h the survival rate of HK-2 cells was decreased from( 77. 60 ± 0. 82) % ( 41. 97 ± 1. 22) %( P < 0. 01). The activity ofrespiratory chain complex III was decreased in a concentration-dependent manner( P <0. 05), while the mitochondrial ROS production was increased at the same time( P <0. 05), the JC-1 monomers positive ratio by the percentage of the treated cells was 1. 51, 1. 58, 1. 71, 2. 41 3. 47 times higher than untreated control( P < 0. 01). In addition, the expression of PGC-1α was decreased at 24 h( P < 0. 05). CONCLUSION Cadmium chloride may inhibit the expression of PGC-1α and the activity of respiratory chain complex III, and by inducing the mitochondrial ROS production and reducing mitochondrial membrane potential, leading to the damage of HK-2 cells.
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Affiliation(s)
- Lin Yuan
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Guangliang Han
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
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21
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Chen M, Li X, Fan R, Yang J, Jin X, Hamid S, Xu S. Cadmium induces BNIP3-dependent autophagy in chicken spleen by modulating miR-33-AMPK axis. Chemosphere 2018; 194:396-402. [PMID: 29223809 DOI: 10.1016/j.chemosphere.2017.12.026] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 12/01/2017] [Accepted: 12/05/2017] [Indexed: 06/07/2023]
Abstract
Cadmium (Cd), a widespread environmental pollutant, has toxic effects on organs including spleen. However, the underlying mechanisms of Cd induced spleen toxicity and the roles of micro-RNA (miRNA) in this process remain poorly understood. To investigate this, cadmium chloride (CdCl2, 10 mg/kg) was administered in the diet of chickens for 90 days. Electron microscopy, qPCR and Western blot were performed. Results showed that Cd exposure suppressed miR-33-5q which increased the levels of AMPK. Subsequently, significant decrease in AKT/mTOR signaling and HSP70 were observed. Concurrently, levels of NF-κB, p-JNK/JNK increased significantly. Moreover, the expression of BNIP3 and other autophagy markers (LC3-I, LC3-II, Beclin-1) increased significantly. Additionally, the levels of ions (Ca, Cr, Se, Sr, Sn, Ba) and (Na, Mg, V, Fe, Mo, Cu, Zn, Cd) significantly decreased and increased, respectively. Taken together, we conclude that Cd induced the deregulation of miR-33-AMPK axis led to BNIP3-dependent autophagy in chicken spleen through AKT/mTOR and HSP70-NF-κB/JNK signal pathways. In-addition Cd could affect ion homeostasis in chicken spleen.
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Affiliation(s)
- Menghao Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Xiaojing Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Ruifeng Fan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Jie Yang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Xi Jin
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Sattar Hamid
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Shiwen Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China.
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22
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Bizoń A, Milnerowicz H. The effect of divalent metal chelators and cadmium on serum phosphotriesterase, lactonase and arylesterase activities of paraoxonase 1. Environ Toxicol Pharmacol 2018; 58:77-83. [PMID: 29306821 DOI: 10.1016/j.etap.2017.12.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 12/19/2017] [Accepted: 12/20/2017] [Indexed: 06/07/2023]
Abstract
Paraoxonase 1 (PON1) is calcium dependent enzyme involved in many functions in human body. PON1 is synthesized in the liver and secreted to the bloodstream where bounds high-density lipoproteins (HDL). Association of PON1 with HDL increases the enzyme stability and biological activities. PON1 have three different activities: phosphotriesterase, lactonase and arylesterase. Until now there is now commercial available kits to determine these three PON1 activities. Also there is no date about stability of PON1 in serum after storage condition. We have elaborated the optimal conditions for determination of PON1 activities in serum using manual procedure as well as the best storage temperature of human serum for determination of PON1 activities. We have also confirmed that PON1 in serum is associated with HDL. Additionally we have investigated the effect of D-penicillamine, ethylenediaminetetraacetic acid and cadmium chloride on PON1 activities in human serum. D-penicillamine and ethylenediaminetetraacetic acid in therapeutic doses as well as cadmium chloride in toxic doses decrease PON1 activities in human serum when compared to non-treated serum. D-penicillamine as metal chelator inhibits much stronger PON1 activities than ethylenediaminetetraacetic acid.
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Affiliation(s)
- Anna Bizoń
- Department of Biomedical and Environmental Analysis, Wroclaw Medical University, Borowska 211, 50-556 Wrocław, Poland.
| | - Halina Milnerowicz
- Department of Biomedical and Environmental Analysis, Wroclaw Medical University, Borowska 211, 50-556 Wrocław, Poland
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23
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Bao R, Wang X, Zheng S, Zhang Q, Lin H, Li S. Selenium Supplementation Changes the Ion Profile in the Pancreas of Chickens Treated with Cadmium. Biol Trace Elem Res 2018; 181:133-141. [PMID: 28451783 DOI: 10.1007/s12011-017-1034-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 04/20/2017] [Indexed: 02/06/2023]
Abstract
Increasing evidence indicates that selenium (Se) could antagonize metal toxicity, including cadmium (Cd) toxicity. However, the effects of Se on Cd-induced changes in the ion profile in the pancreas of chickens have not been reported. In the present study, 128 Hy-Line brown laying chickens were divided into the control group, Se-treated group, Se/Cd-treated group, and Cd-treated group, and we detected the concentrations of 28 ions in the four groups by inductively coupled plasma mass spectrometry. In the Cd-treated group, the accumulation of Cd in the pancreas was 836.8 times higher that than in the control group (27,353.71 ppb/32.69 ppb). Meanwhile, the Ca, Ti, Fe, Mo, Li, Al, and Pb levels increased and the Cr, Mn, Ni, Cu, Zn, Se, Sr, and Sb levels decreased due to sub-chronic Cd poisoning. The Fe, Mo, Ba, and Pb levels decreased in the Se/Cd-treated group. Our findings suggest that Cd can accumulate in the chicken pancreas and affect the ion profiles, whereas Se can ameliorate the accumulation of Cd and change the ion profiles in the chicken pancreas.
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Affiliation(s)
- Rongkun Bao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Xinyue Wang
- College of Life Science, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Shufang Zheng
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Qiaojian Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Hongjin Lin
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
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Szopa A, Kokotkiewicz A, Król A, Luczkiewicz M, Ekiert H. Improved production of dibenzocyclooctadiene lignans in the elicited microshoot cultures of Schisandra chinensis (Chinese magnolia vine). Appl Microbiol Biotechnol 2017; 102:945-959. [PMID: 29181570 PMCID: PMC5756551 DOI: 10.1007/s00253-017-8640-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 11/04/2017] [Accepted: 11/07/2017] [Indexed: 11/24/2022]
Abstract
Dibenzocyclooctadiene lignans are a specific group of secondary metabolites that occur solely in Schisandra chinensis. The aim of the presented work was to boost the accumulation of lignans in the agitated microshoot cultures of S. chinensis, using different elicitation schemes. The experiments included testing of various concentrations and supplementation times of cadmium chloride (CdCl2), chitosan (Ch), yeast extract (YeE), methyl jasmonate (MeJa), and permeabilizing agent—dimethylsulfoxide (DMSO). After 30 days, the microshoots were harvested and evaluated for growth parameters and lignan content by LC-DAD method. The analyses showed enhanced production of lignans in the elicited S. chinensis microshoots, whereas the respective media samples contained only trace amounts of the examined compounds (< 5 mg/l). Elicitation with CdCl2 caused up to 2-fold increase in the total lignan content (max. ca. 730 mg/100 g DW after the addition of 1000 μM CdCl2 on the tenth day). Experiments with chitosan resulted in up to 1.35-fold increase in lignan concentration (max. ca. 500 mg/100 g DW) after the supplementation with 50 mg/l on the first day and 200 mg/l on the tenth day. High improvement of lignan production was also recorded after YeE elicitation. After the elicitation with 5000 mg/l of YeE on the first day of the growth period, and with 1000 and 3000 mg/l on the 20th day, the lignan production increased to the same degree—about 1.8-fold. The supplementation with 1000 mg/l YeE on the 20th day of the growth cycle was chosen as the optimal elicitation scheme, for the microshoot cultures maintained in Plantform temporary immersion system—the total content of the estimated lignans was equal to 831.6 mg/100 g DW.
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Affiliation(s)
- Agnieszka Szopa
- Department of Pharmaceutical Botany, Jagiellonian University, Collegium Medicum, ul. Medyczna 9, 30-688, Kraków, Poland.
| | - Adam Kokotkiewicz
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Gdańsk, al. gen. J. Hallera 107, 80-416, Gdańsk, Poland
| | - Agata Król
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Gdańsk, al. gen. J. Hallera 107, 80-416, Gdańsk, Poland
| | - Maria Luczkiewicz
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Gdańsk, al. gen. J. Hallera 107, 80-416, Gdańsk, Poland
| | - Halina Ekiert
- Department of Pharmaceutical Botany, Jagiellonian University, Collegium Medicum, ul. Medyczna 9, 30-688, Kraków, Poland
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Hasegawa Y, Mao W, Saha S, Gunner G, Kolpakova J, Martin GE, Futai K. Luciferase shRNA Presents off-Target Effects on Voltage-Gated Ion Channels in Mouse Hippocampal Pyramidal Neurons. eNeuro 2017; 4:ENEURO.0186-17.2017. [PMID: 29034317 PMCID: PMC5635487 DOI: 10.1523/eneuro.0186-17.2017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 09/20/2017] [Accepted: 09/25/2017] [Indexed: 12/11/2022] Open
Abstract
RNA interference (RNAi) is a straightforward approach to study gene function from the in vitro cellular level to in vivo animal behavior. Although RNAi-mediated gene knockdown has become essentially routine in neuroscience over the past ten years, off-target effects of short hairpin RNAs (shRNAs) should be considered as the proper choice of control shRNA is critical in order to perform meaningful experiments. Luciferase shRNA (shLuc), targeting firefly luciferase, and scrambled shRNAs (shScrs) have been widely used as controls for vertebrate cell research. However, thorough validation of control shRNAs has not been made to date. Here, we performed thorough physiological and morphological studies against control shRNAs in mouse hippocampal CA1 pyramidal neurons. As expected, all control shRNAs exhibited normal basal synaptic transmission and dendritic morphology. However, to our surprise, shLuc exerted severe off-target effects on voltage-gated ion channel function, while the shScr had no detectable changes. These results indicate that thorough validation of shRNA is imperative and, in the absence of such validation, that shScr is the best available negative control for gene knockdown studies.
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Affiliation(s)
- Yuto Hasegawa
- Brudnick Neuropsychiatric Research Institute and Program in Neuroscience, University of Massachusetts Medical School, Worcester, MA 01604
| | - Wenjie Mao
- Brudnick Neuropsychiatric Research Institute and Program in Neuroscience, University of Massachusetts Medical School, Worcester, MA 01604
| | - Sucharita Saha
- Brudnick Neuropsychiatric Research Institute and Program in Neuroscience, University of Massachusetts Medical School, Worcester, MA 01604
| | - Georgia Gunner
- Brudnick Neuropsychiatric Research Institute and Program in Neuroscience, University of Massachusetts Medical School, Worcester, MA 01604
| | - Jenya Kolpakova
- Brudnick Neuropsychiatric Research Institute and Program in Neuroscience, University of Massachusetts Medical School, Worcester, MA 01604
| | - Gilles E Martin
- Brudnick Neuropsychiatric Research Institute and Program in Neuroscience, University of Massachusetts Medical School, Worcester, MA 01604
| | - Kensuke Futai
- Brudnick Neuropsychiatric Research Institute and Program in Neuroscience, University of Massachusetts Medical School, Worcester, MA 01604
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Vera-Estrella R, Gómez-Méndez MF, Amezcua-Romero JC, Barkla BJ, Rosas-Santiago P, Pantoja O. Cadmium and zinc activate adaptive mechanisms in Nicotiana tabacum similar to those observed in metal tolerant plants. Planta 2017; 246:433-451. [PMID: 28455771 DOI: 10.1007/s00425-017-2700-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 04/22/2017] [Indexed: 06/07/2023]
Abstract
MAIN CONCLUSION Tobacco germinated and grew in the presence of high concentrations of cadmium and zinc without toxic symptoms. Evidence suggests that these ions are sequestered into the vacuole by heavy metal/H + exchanger mechanisms. Heavy metal hyperaccumulation and hypertolerance are traits shared by a small set of plants which show specialized physiological and molecular adaptations allowing them to accumulate and sequester toxic metal ions. Nicotiana tabacum was used to test its potential as a metal-accumulator in a glass house experiment. Seed germination was not affected in the presence of increasing concentrations of zinc and cadmium. Juvenile and adult plants could concentrate CdCl2 and ZnSO4 to levels exceeding those in the hydroponic growth medium and maintained or increased their leaf dry weight when treated with 0.5- or 1-mM CdCl2 or 1-mM ZnSO4 for 5 days. Accumulation of heavy metals did not affect the chlorophyll and carotenoid levels, while variable effects were observed in cell sap osmolarity. Heavy metal-dependent H+ transport across the vacuole membrane was monitored using quinacrine fluorescence quenching. Cadmium- or zinc-dependent fluorescence recovery revealed that increasing concentrations of heavy metals stimulated the activities of the tonoplast Cd2+ or Zn2+/H+ exchangers. Immunodetection of the V-ATPase subunits showed that the increased proton transport by zinc was not due to changes in protein amount. MTP1 and MTP4 immunodetection and semiquantitative RT-PCR of NtMTP1, NtNRAMP1, and NtZIP1 helped to identify the genes that are likely involved in sequestration of cadmium and zinc in the leaf and root tissue. Finally, we demonstrated that cadmium and zinc treatments induced an accumulation of zinc in leaf tissues. This study shows that N. tabacum possesses a hyperaccumulation response, and thus could be used for phytoremediation purposes.
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Affiliation(s)
- Rosario Vera-Estrella
- Instituto de Biotecnología, UNAM, A.P. 510-3, Colonia Miraval, 62250, Cuernavaca, Morelos, Mexico.
| | - María F Gómez-Méndez
- Instituto de Biotecnología, UNAM, A.P. 510-3, Colonia Miraval, 62250, Cuernavaca, Morelos, Mexico
| | - Julio C Amezcua-Romero
- Instituto de Biotecnología, UNAM, A.P. 510-3, Colonia Miraval, 62250, Cuernavaca, Morelos, Mexico
- Escuela Nacional de Estudios Superiores, Unidad León, UNAM, Blvd. UNAM 2011, Comunidad de los Tepetates, 37684, León, Guanajuato, Mexico
| | - Bronwyn J Barkla
- Southern Cross Plant Science, Southern Cross University, Lismore, NSW, 2480, Australia
| | - Paul Rosas-Santiago
- Instituto de Biotecnología, UNAM, A.P. 510-3, Colonia Miraval, 62250, Cuernavaca, Morelos, Mexico
| | - Omar Pantoja
- Instituto de Biotecnología, UNAM, A.P. 510-3, Colonia Miraval, 62250, Cuernavaca, Morelos, Mexico
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Koren D, Grove JCR, Wei W. Cross-compartmental Modulation of Dendritic Signals for Retinal Direction Selectivity. Neuron 2017; 95:914-927.e4. [PMID: 28781167 DOI: 10.1016/j.neuron.2017.07.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 06/08/2017] [Accepted: 07/19/2017] [Indexed: 11/19/2022]
Abstract
Compartmentalized signaling in dendritic subdomains is critical for the function of many central neurons. In the retina, individual dendritic sectors of a starburst amacrine cell (SAC) are preferentially activated by different directions of linear motion, indicating limited signal propagation between the sectors. However, the mechanism that regulates this propagation is poorly understood. Here, we find that metabotropic glutamate receptor 2 (mGluR2) signaling, which acts on voltage-gated calcium channels in SACs, selectively restricts cross-sector signal propagation in SACs, but does not affect local dendritic computation within individual sectors. mGluR2 signaling ensures sufficient electrotonic isolation of dendritic sectors to prevent their depolarization during non-preferred motion, yet enables controlled multicompartmental signal integration that enhances responses to preferred motion. Furthermore, mGluR2-mediated dendritic compartmentalization in SACs is important for the functional output of direction-selective ganglion cells (DSGCs). Therefore, our results directly link modulation of dendritic compartmentalization to circuit-level encoding of motion direction in the retina.
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Affiliation(s)
- David Koren
- Department of Neurobiology, The University of Chicago, Chicago, IL 60637, USA; Interdisciplinary Scientist Training Program, The University of Chicago, Chicago, IL 60637, USA
| | - James C R Grove
- Department of Neurobiology, The University of Chicago, Chicago, IL 60637, USA
| | - Wei Wei
- Department of Neurobiology, The University of Chicago, Chicago, IL 60637, USA.
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28
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Tan S, Chi Q, Liu T, Sun Z, Min Y, Zhang Z, Li S. Alleviation Mechanisms of Selenium on Cadmium-Spiked Neutrophil Injury to Chicken. Biol Trace Elem Res 2017; 178:301-309. [PMID: 28064415 DOI: 10.1007/s12011-016-0924-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 12/25/2016] [Indexed: 01/10/2023]
Abstract
To determine the negative effects of cadmium (Cd) exposure and the protective role of selenium (Se) on Cd-spiked neutrophils of chicken, forty-eight 28-day-old Isa Brown male chickens were divided randomly into four groups. Group I (control group) was fed with the basic diet containing 0.2 mg/kg Se. Group II (Se-treated group) was fed with the basic diet supplemented with Na2SeO3, and the total Se content was 2 mg/kg. Group III (Se/Cd-treated group) was fed with the basic diet supplemented with Na2SeO3; the total Se content was 2 mg/kg and supplemented with 150 mg/kg CdCl2. Group IV (Cd-treated group) was fed with the basic diet supplemented with 150 mg/kg CdCl2. Analyses of inflammatory factors, cytokines, and heat shock protein (Hsp) messenger RNA (mRNA) expression were detected by real-time PCR (RT-PCR). Additionally, we evaluated the phagocytic rate of neutrophils in peripheral blood. First, we observed that Cd significantly induced the mRNA expression levels of inflammatory factors NF-κB, iNOS, COX-2, and TNF-α, while Se/Cd treatment reduced their mRNA expression, although these expression levels remained higher than that of the control group. In addition, the mRNA expression levels of cytokines (IL-2, IL-4, and IL-10) for the Se-treated group exhibited significant differences between the Se/Cd-treated group and the Cd-treated group. Furthermore, the mRNA expression levels of Hsps demonstrated that the Se/Cd-treated group and the Cd-treated group were significantly higher (P < 0.05) than the control group and the Se-treated group. These results demonstrated that Se presented partial protection on Cd-spiked neutrophils of chicken with Hsps being involved in the process of the Cd-spiked toxic effects in chicken peripheral blood neutrophils.
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Affiliation(s)
- Siran Tan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Qianru Chi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Tianqi Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Zhepeng Sun
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Yahong Min
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Ziwei Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
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Ragusa MA, Costa S, Cuttitta A, Gianguzza F, Nicosia A. Coexposure to sulfamethoxazole and cadmium impairs development and attenuates transcriptional response in sea urchin embryo. Chemosphere 2017; 180:275-284. [PMID: 28411544 DOI: 10.1016/j.chemosphere.2017.04.030] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 04/06/2017] [Accepted: 04/07/2017] [Indexed: 06/07/2023]
Abstract
Among sulfonamides, sulfamethoxazole represents one of the most widely employed. A considerable amount of sulfamethoxazole is introduced into the marine environment after utilization in aquaculture. The cytotoxicity of sulfamethoxazole relies mainly on arylhydroxylamine metabolites and it is associated with the production of reactive oxygen species. Cadmium represents a metal largely employed in several anthropic activities and it is toxic for all living organisms even at low concentrations. Since it is not degraded, cadmium irreversibly accumulates into cells. In order to understand the mechanisms of response to changes in the chemical environment, we investigated by light microscopy observations and RT-qPCR assays the impact of sulfamethoxazole and cadmium in P. lividus sea urchin embryos. During development, embryos were exposed to sulfamethoxazole amount comparable to that usually used in aquaculture procedures and/or sublethal levels of cadmium chloride. Impairment of development and biomarkers for inflammation, detoxification, metal scavenging and cell death were inspected. Even though treatment with sulfamethoxazole apparently did not affect development, it stimulated a remarkable molecular response to oxidative stress. Moreover, combined exposure seriously compromised development and the defense mechanisms to cadmium were blocked. This study leads to the conclusion that coexposure to sulfamethoxazole and cadmium induces neutralizing effects on sea urchin embryos. Thus, in marine areas nearby aquaculture farms, where sulfamethoxazole discharge represents an important environmental contaminant, cadmium occurrence may alter population dynamics of P. lividus.
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Affiliation(s)
- Maria Antonietta Ragusa
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technologies, University of Palermo, viale delle Scienze, Ed. 16, 90128, Palermo, Sicily, Italy.
| | - Salvatore Costa
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technologies, University of Palermo, viale delle Scienze, Ed. 16, 90128, Palermo, Sicily, Italy.
| | - Angela Cuttitta
- National Research Council-Institute for Marine and Coastal Environment (IAMC-CNR), Laboratory of Molecular Ecology and Biotechnology, Detached Unit of Capo Granitola, Torretta Granitola, Trapani, Sicily, Italy.
| | - Fabrizio Gianguzza
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technologies, University of Palermo, viale delle Scienze, Ed. 16, 90128, Palermo, Sicily, Italy.
| | - Aldo Nicosia
- National Research Council-Institute for Marine and Coastal Environment (IAMC-CNR), Laboratory of Molecular Ecology and Biotechnology, Detached Unit of Capo Granitola, Torretta Granitola, Trapani, Sicily, Italy.
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Zhang R, Yi R, Bi Y, Xing L, Bao J, Li J. The Effect of Selenium on the Cd-Induced Apoptosis via NO-Mediated Mitochondrial Apoptosis Pathway in Chicken Liver. Biol Trace Elem Res 2017; 178:310-319. [PMID: 28062951 DOI: 10.1007/s12011-016-0925-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 12/26/2016] [Indexed: 12/12/2022]
Abstract
Cd-induced apoptosis and the protective effects of Se against Cd-induced injury have been reported in previous studies. However, little is known regarding the effects of Cd-induced apoptosis in hepatic cells and the antagonistic effects of Se on Cd in poultry. In the present study, 128 healthy 31-week-old laying hens were randomly divided into four groups, which were fed basic diets, with the addition of Se (Na2SeO3, 2 mg/kg), Cd (CdCl2, 150 mg/kg), or Se + Cd (150 mg/kg of CdCl2 and 2 mg/kg of Na2SeO3) for 90 days. Ultrastructural changes, nitric oxide (NO) concentrations, inducible nitric oxide synthase (iNOS) activities, results of the terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay of apoptosis, and the expression of iNOS and apoptosis-related genes in livers were determined. It was observed that Cd treatment significantly increased the concentrations of NO and iNOS activity in chicken livers. The production of excessive NO initiated the mitochondrial apoptotic pathway. Exposure to Cd increased the mRNA and the protein expression levels of iNOS, caspase-3, Bax, p53, and Cyt-c. Furthermore, the ratio of Bax/Bcl-2 increased, while the expression of Bcl-2 decreased. Treatment with Se significantly alleviated Cd-induced apoptosis in chicken livers, as evidenced by a reduction in the production of NO, iNOS activity, the number of apoptotic cells, and mRNA and protein expression levels of iNOS, caspase-3, Bax, and Cyt-c. It indicated that Cd induced NO-mediated apoptosis through the mitochondrial apoptotic pathway and Se exerted antagonizing effects. The present study provides new insights as to how Se affects Cd-induced toxicity in the chicken liver.
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Affiliation(s)
- Runxiang Zhang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Ran Yi
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Yanju Bi
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Lu Xing
- College of Life Science, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Jun Bao
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Jianhong Li
- College of Life Science, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
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Yang G, Yu L, Zhang K, Zhao Y, Guo Y, Gao C. A ThDREB gene from Tamarix hispida improved the salt and drought tolerance of transgenic tobacco and T. hispida. Plant Physiol Biochem 2017; 113:187-197. [PMID: 28222350 DOI: 10.1016/j.plaphy.2017.02.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 01/19/2017] [Accepted: 02/07/2017] [Indexed: 05/04/2023]
Abstract
Dehydration-responsive element-binding (DREB) transcription factors are important abiotic stress tolerance related genes, and some reports on the roles of DREB have primarily addressed herbal plants. To explore the abiotic stress tolerance role of DREB (ThDREB) from Tamarix hispida, a ThDREB gene with a complete ORF of 783 bp that encodes a 28.74 kDa protein with 260 amino acids, was isolated and functionally annotated. ThDREB expression was highly induced by NaCl, PEG, NaHCO3 and CdCl2 treatments, and the highest expression level (369.2-fold of control) was found for the roots that were under NaCl stress for 6 h. The tobacco plants that were transformed by ThDREB were conferred with higher germination rates, fresh weights and root lengths than the wild type (WT) tobacco plants under NaCl and mannitol treatments. The total chlorophyll content (tcc), superoxide dismutase (SOD) and peroxidase (POD) activities were also higher in the transgenic lines in comparison with the WT, and the malondialdehyde (MDA) and H2O2 content, electrolyte leakage (EL) rate and ROS as tracked by staining were generated to a lesser degree in ThDREB transgenic plants than in the WT under NaCl and mannitol stress. Furthermore, the transient overexpression analysis of ThDREB in T. hispida also improved plant salt and drought tolerance in comparison with the empty vector-transformed lines. Our results indicated that ThDREB expression could effectively improve tolerance to salt and drought stress by enhancing the antioxidase activity that keeps the ROS at a low accumulation level and makes them easy to scavenge.
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Affiliation(s)
- Guiyan Yang
- Laboratory of Walnut Research Center, College of Forestry, Northwest A & F University, Yangling 712100, Shaanxi, China; State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 26 Hexing Road, 150040 Harbin, China
| | - Lili Yu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 26 Hexing Road, 150040 Harbin, China
| | - Kaimin Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 26 Hexing Road, 150040 Harbin, China
| | - Yulin Zhao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 26 Hexing Road, 150040 Harbin, China
| | - Yucong Guo
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 26 Hexing Road, 150040 Harbin, China
| | - Caiqiu Gao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 26 Hexing Road, 150040 Harbin, China.
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Ye XF, Xue Y, Ling T, Wang Y, Yu XN, Cheng C, Feng G, Hu L, Shi Z, Chen J. Cinnamaldehyde Ameliorates Cadmium-Inhibited Root Elongation in Tobacco Seedlings via Decreasing Endogenous Hydrogen Sulfide Production. Molecules 2016; 22:E15. [PMID: 28029133 PMCID: PMC6155710 DOI: 10.3390/molecules22010015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 12/13/2016] [Accepted: 12/22/2016] [Indexed: 12/22/2022] Open
Abstract
Cinnamaldehyde (CA) is natural plant-derived compound that has been highly appreciated for its medicinal properties. However, little information is known about the regulation of plant intrinsic physiology by CA. To address these gaps, physiological, histochemical, and biochemical approaches were applied to investigate CA-facilitated cadmium (Cd) tolerance in the roots of tobacco (Nicotiana tabacum) seedlings. Treatment with CdCl₂ at 20 μM for 72 h resulted in the significant decrease in root elongation by 40.39% as compared to control. CA alleviated Cd-inhibited root elongation in dose- and time-dependent manners. The addition of CA at 20 μM induced significant increase in root elongation by 42.58% as compared to Cd treatment alone. CA abolished Cd-induced ROS (reactive oxygen species) accumulation, lipid peroxidation, loss of membrane integrity, cell death, and free Cd2+ accumulation in roots. CA blocked the Cd-induced increase in the endogenous H₂S level through the down-regulation of d-cysteine desulfhydrase (DCD) expression. H₂S scavenger hypotaurine (HT) or potent H₂S-biosynthetic inhibitor dl-propargylglicine (PAG) were able mimic the action of CA on the blockade of Cd-induced H₂S accumulation, cell death, and growth inhibition. Enhancement of the endogenous H₂S level with NaHS (H₂S donor) abrogated all the beneficial capabilities of CA, HT, and PAG. Collectively, these results suggest that CA has great potential to confer plant tolerance against Cd stress, which is closely associated with its capability to inhibit Cd-induced H₂S production. This study not only provides evidences for the regulation of plant physiology by CA but also sheds new light on the cross-talk between CA and H₂S in physiological modulations.
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Affiliation(s)
- Xie-Feng Ye
- Tobacco Science College/National Tobacco Cultivation and Physiology and Biochemistry Research Centre/Key Laboratory for Tobacco Cultivation of Tobacco Industry, Henan Agricultural University, Zhengzhou 450002, China.
| | - Yanfeng Xue
- Nanjing Yangzi Modern Agriculture Investment and Development Co. Ltd., Nanjing 211899, China.
| | - Tianxiao Ling
- Tobacco Science College/National Tobacco Cultivation and Physiology and Biochemistry Research Centre/Key Laboratory for Tobacco Cultivation of Tobacco Industry, Henan Agricultural University, Zhengzhou 450002, China.
| | - Yong Wang
- Chongqing Tobacco Corporation, Chongqing 400023, China.
| | - Xiao-Na Yu
- Tobacco Science College/National Tobacco Cultivation and Physiology and Biochemistry Research Centre/Key Laboratory for Tobacco Cultivation of Tobacco Industry, Henan Agricultural University, Zhengzhou 450002, China.
| | - Changxin Cheng
- Hongyun Honghe Tobacco Group Co. Ltd., Kunming 650231, China.
| | - Guosheng Feng
- Henan Tobacco Corporation Queshan Branch, Queshan 463200, China.
| | - Liangbin Hu
- Department of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China.
| | - Zhiqi Shi
- Institute of Food Quality and Safety, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
- Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Nanjing 210014, China.
| | - Jian Chen
- Institute of Food Quality and Safety, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
- Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Nanjing 210014, China.
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Liu XR, Wang YY, Fan HR, Wu CJ, Kumar A, Yang LG. Preventive effects of β-cryptoxanthin against cadmium-induced oxidative stress in the rat testis. Asian J Androl 2016; 18:920-924. [PMID: 27101804 PMCID: PMC5109889 DOI: 10.4103/1008-682x.173449] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 07/01/2015] [Accepted: 12/07/2015] [Indexed: 12/29/2022] Open
Abstract
β-cryptoxanthin (CRY), a major carotenoid of potential interest for health, is obtained naturally from orange vegetables and fruits. A few research studies have reported that CRY could decrease oxidative stress and germ cell apoptosis. The purpose of this study was to examine the effects of CRY on acute cadmium chloride (CdCl 2 )-induced oxidative damage in rat testes. For this study, 24 rats were divided into four groups, one of which serves as a control group that received intraperitoneal (i.p.) injections of corn oil and physiological saline. The other rats were i.p. injected with CRY (10 μg kg-1 ) every 8 h, beginning 8 h before CdCl 2 (2.0 mg kg-1 ) treatment. The pathological and TUNEL findings revealed that CRY ameliorated the Cd-induced testicular histological changes and germ cell apoptosis in the rats. Furthermore, the Cd-induced decrease in the testicular testosterone (T) level was attenuated after CRY administration (P < 0.05). The administration of CRY significantly reversed the Cd-induced increases in the lipid peroxide (LPO) and malondialdehyde (MDA) levels (P < 0.01). The testicular antioxidants superoxide dismutase (SOD), catalase (CAT) and glutathione (GSH) were decreased by treatment with Cd alone but were restored by CRY co-treatment. These results demonstrated that the application of CRY can enhance the tolerance of rats to Cd-induced oxidative damage and suggest that it has promised as a pharmacological agent to protect against Cd-induced testicular toxicity.
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Affiliation(s)
- Xiao-Ran Liu
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yue-Ying Wang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Hai-Rui Fan
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Can-Jie Wu
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Ashok Kumar
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Li-Guo Yang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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Padmanabhan A, Vuong SAT, Hochstrasser M. Assembly of an Evolutionarily Conserved Alternative Proteasome Isoform in Human Cells. Cell Rep 2016; 14:2962-74. [PMID: 26997268 DOI: 10.1016/j.celrep.2016.02.068] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 01/25/2016] [Accepted: 02/16/2016] [Indexed: 11/17/2022] Open
Abstract
Targeted intracellular protein degradation in eukaryotes is largely mediated by the proteasome. Here, we report the formation of an alternative proteasome isoform in human cells, previously found only in budding yeast, that bears an altered subunit arrangement in the outer ring of the proteasome core particle. These proteasomes result from incorporation of an additional α4 (PSMA7) subunit in the position normally occupied by α3 (PSMA4). Assembly of "α4-α4" proteasomes depends on the relative cellular levels of α4 and α3 and on the proteasome assembly chaperone PAC3. The oncogenic tyrosine kinases ABL and ARG and the tumor suppressor BRCA1 regulate cellular α4 levels and formation of α4-α4 proteasomes. Cells primed to assemble α4-α4 proteasomes exhibit enhanced resistance to toxic metal ions. Taken together, our results establish the existence of an alternative mammalian proteasome isoform and suggest a potential role in enabling cells to adapt to environmental stresses.
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Affiliation(s)
- Achuth Padmanabhan
- Department of Molecular Biophysics and Biochemistry, Yale University, 266 Whitney Avenue, New Haven, CT 06520, USA
| | - Simone Anh-Thu Vuong
- Department of Molecular Biophysics and Biochemistry, Yale University, 266 Whitney Avenue, New Haven, CT 06520, USA
| | - Mark Hochstrasser
- Department of Molecular Biophysics and Biochemistry, Yale University, 266 Whitney Avenue, New Haven, CT 06520, USA.
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Yuan H, Qin F, Guo W, Gu H, Shao A. Oxidative stress and spermatogenesis suppression in the testis of cadmium-treated Bombyx mori larvae. Environ Sci Pollut Res Int 2016; 23:5763-5770. [PMID: 26585454 DOI: 10.1007/s11356-015-5818-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 11/16/2015] [Indexed: 06/05/2023]
Abstract
Bombyx mori L. (B. mori) were exposed to cadmium chloride (CdCl2) incorporated in an artificial diet (0, 6.25, 12.5, 25, and 50 mg kg(-1)) throughout the larval stage. Changes in malondialdehyde (MDA) and reduced glutathione (GSH) contents and activities of superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px), as well as their corresponding messenger RNA (mRNA) levels in the testes of the fifth instar larvae were evaluated. Additionally, spermatozoon deformation in the testes was examined. Upon Cd treatment, the MDA content in the testes was significantly increased in a concentration-dependent manner. Cd-exposed larvae had increased levels of glutathione. Pearson's correlation analysis revealed that SOD and CAT activities were positively correlated (R (2) = 0.605, P = 0.017). The changing trends in the mRNA levels of these enzymes were not always consistent with those of enzymatic activities. Alterations in GSH-Px activities and mRNA levels were positively correlated (R (2) = 0.771, P < 0.01). Morphological analysis revealed that Cd deformed and affected the maturation of spermatozoa. Our results collectively support a relationship between Cd and alterations in the levels of antioxidant enzymes in B. mori testes.
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Affiliation(s)
- Hongxia Yuan
- School of Chemistry Biology and Material Engineering, Jiangsu Key Laboratory for Environment Functional Materials, Suzhou University of Science and Technology, Suzhou, Jiangsu, 215009, China.
- Suzhou National New & Hi-tech Industrial Development Zone, Kerui Road 1, Suzhou, 215009, China.
| | - Fenjv Qin
- School of Chemistry Biology and Material Engineering, Jiangsu Key Laboratory for Environment Functional Materials, Suzhou University of Science and Technology, Suzhou, Jiangsu, 215009, China
| | - Weiqiang Guo
- School of Chemistry Biology and Material Engineering, Jiangsu Key Laboratory for Environment Functional Materials, Suzhou University of Science and Technology, Suzhou, Jiangsu, 215009, China
| | - Huajie Gu
- School of Chemistry Biology and Material Engineering, Jiangsu Key Laboratory for Environment Functional Materials, Suzhou University of Science and Technology, Suzhou, Jiangsu, 215009, China
| | - Aihua Shao
- School of Chemistry Biology and Material Engineering, Jiangsu Key Laboratory for Environment Functional Materials, Suzhou University of Science and Technology, Suzhou, Jiangsu, 215009, China
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Shemarova IV, Korotkov SM, Nesterov VP. [MECHANISMS OF THE EFFECT OF Li+ ON MYOCARDIUM OF VERTEBRATES]. Zh Evol Biokhim Fiziol 2015; 51:181-186. [PMID: 26281220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The effect of Li+ on the frog Rana temporaria myocardium and its influence on the ion transport in the rat heart mitochondria (RHM) were studied. Li+ added to the normal Ringer solution (Li(+)-R) was found to attenuate myocardial tension, decrease the maximal rate of tension development and its half-relaxation time. Comparison of the cardiac muscle contraction parameters in the Li(+)-R with the effect of the voltage-gated Ca(2+)-channels (Cav1.2), verapamil and CdCl2, showed that the negative inotropic effect of the Na+ replacement by Li+ in the limited intermembrane ("fuzzy") space is underlain by the blocking of Ca2+ influx into the myoplasm via the reverse Ca2+/Na(+)-exchanger in the plasma membrane (PM). This, in turn, prevents Ca(2+)-induced massive Ca2+ release into the myoplasm via the RYR2-channels in the sarcoplasmic reticulum (SR) leading in aggregate to suppression of Ca(2+)-dependent myocardial contractions. In the experimental studies of the Li+ effect on the RHM it was established that Li+ just slightly increases the passive permeability of the inner mitochondrial membrane (IMM) for K+ and H+ and decreases the intensity of ion pumping out of the energized mitochondrial matrix to the external medium. This may also indicate the lack of relationship between the mitochondrial oxidative processes and the reduction in the myocardial contractile activity under the Na+ replacement by Li+.
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Yao LH, Meng W, Song RF, Xiong QP, Sun W, Luo ZQ, Yan WW, Li YP, Li XP, Li HH, Xiao P. Modulation effects of cordycepin on the skeletal muscle contraction of toad gastrocnemius muscle. Eur J Pharmacol 2014; 726:9-15. [PMID: 24447979 DOI: 10.1016/j.ejphar.2014.01.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Revised: 12/20/2013] [Accepted: 01/09/2014] [Indexed: 11/15/2022]
Abstract
Isolated toad gastrocnemius muscle is a typical skeletal muscle tissue that is frequently used to study the motor system because it is an important component of the motor system. This study investigates the effects of cordycepin on the skeletal muscle contractile function of isolated toad gastrocnemius muscles by electrical field stimulation. Results showed that cordycepin (20 mg/l to 100 mg/l) significantly decreased the contractile responses in a concentration-dependent manner. Cordycepin (50 mg/l) also produced a rightward shift of the contractile amplitude-stimulation intensity relationship, as indicated by the increases in the threshold stimulation intensity and the saturation stimulation intensity. However, the most notable result was that the maximum amplitude of the muscle contractile force was significantly increased under cordycepin application (122±3.4% of control). This result suggests that the skeletal muscle contractile function and muscle physical fitness to the external stimulation were improved by the decreased response sensitivity in the presence of cordycepin. Moreover, cordycepin also prevented the repetitive stimulation-induced decrease in muscle contractile force and increased the recovery amplitude and recovery ratio of muscle contraction. However, these anti-fatigue effects of cordycepin on muscle contraction during long-lasting muscle activity were absent in Ca2+-free medium or in the presence of all Ca2+ channels blocker (0.4 mM CdCl2). These results suggest that cordycepin can positively affect muscle performance and provide ergogenic and prophylactic benefits in decreasing skeletal muscle fatigue. The mechanisms involving excitation-coupled Ca2+ influxes are strongly recommended.
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Music E, Khan S, Khamis I, Heikkila JJ. Accumulation of heme oxygenase-1 (HSP32) in Xenopus laevis A6 kidney epithelial cells treated with sodium arsenite, cadmium chloride or proteasomal inhibitors. Comp Biochem Physiol C Toxicol Pharmacol 2014; 166:75-87. [PMID: 25064141 DOI: 10.1016/j.cbpc.2014.07.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 07/09/2014] [Accepted: 07/17/2014] [Indexed: 12/12/2022]
Abstract
The present study examined the effect of sodium arsenite, cadmium chloride, heat shock and the proteasomal inhibitors MG132, withaferin A and celastrol on heme oxygenase-1 (HO-1; also known as HSP32) accumulation in Xenopus laevis A6 kidney epithelial cells. Immunoblot analysis revealed that HO-1 accumulation was not induced by heat shock but was enhanced by sodium arsenite and cadmium chloride in a dose- and time-dependent fashion. Immunocytochemistry revealed that these metals induced HO-1 accumulation in a granular pattern primarily in the cytoplasm. Additionally, in 20% of the cells arsenite induced the formation of large HO-1-containing perinuclear structures. In cells recovering from sodium arsenite or cadmium chloride treatment, HO-1 accumulation initially increased to a maximum at 12h followed by a 50% reduction at 48 h. This initial increase in HO-1 levels was likely the result of new synthesis as it was inhibited by cycloheximide. Interestingly, treatment of cells with a mild heat shock enhanced HO-1 accumulation induced by low concentrations of sodium arsenite and cadmium chloride. Finally, we determined that HO-1 accumulation was induced in A6 cells by the proteasomal inhibitors, MG132, withaferin A and celastrol. An examination of heavy metal and proteasomal inhibitor-induced HO-1 accumulation in amphibians is of importance given the presence of toxic heavy metals in aquatic habitats.
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Affiliation(s)
- Ena Music
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
| | - Saad Khan
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
| | - Imran Khamis
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
| | - John J Heikkila
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
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Thiruvengadam M, Chung IM. Selenium, putrescine, and cadmium influence health-promoting phytochemicals and molecular-level effects on turnip (Brassica rapa ssp. rapa). Food Chem 2014; 173:185-93. [PMID: 25466011 DOI: 10.1016/j.foodchem.2014.10.012] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Revised: 09/30/2014] [Accepted: 10/02/2014] [Indexed: 12/11/2022]
Abstract
The effects of selenium, putrescine, and cadmium on the contents of glucosinolates, total phenolics, flavonoids, carotenoids, chlorophyll, anthocyanin, malondialdehyde, hydrogen peroxide, and antioxidant capacities as well as gene regulation of phenolics, flavonoids, carotenoids, and glucosinolates biosynthesis were investigated in turnip plants. Selenium dioxide (SeO2) treatment significantly induced the amount of gluconasturtiin, glucobrassicanapin, glucoallysin, glucobrassicin, 4-methoxyglucobrassicin, and 4-hydroxyglucobrassicin. Cadmium chloride (CdCl2)- and putrescine-treated plants had considerably enhanced gluconasturtiin and 4-hydroxyglucobrassicin levels, respectively. Total phenolic and flavonoid content as well as antioxidant capacities were significantly increased in SeO2-treated plants. Lutein was higher in control plants followed by, in decreasing order, SeO2-, putrescine-, and CdCl2-treated plants. The chlorophyll content was significantly decreased and anthocyanin, MDA, and H2O2 levels were significantly increased with CdCl2 treatment. Moreover, plants treated with selenium and cadmium showed significant induction of genes related to glucosinolate, phenolic, and carotenoid biosynthesis. These results demonstrated that SeO2 significantly increased the contents of health-promoting compounds and enhanced the antioxidant capacities of turnip plants.
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Affiliation(s)
- Muthu Thiruvengadam
- Department of Applied Bioscience, College of Life and Environmental Science, Konkuk University, Seoul 143 701, South Korea
| | - Ill-Min Chung
- Department of Applied Bioscience, College of Life and Environmental Science, Konkuk University, Seoul 143 701, South Korea.
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Diacomanolis V, Noller BN, Ng JC. Bioavailability and pharmacokinetics of arsenic are influenced by the presence of cadmium. Chemosphere 2014; 112:203-9. [PMID: 25048907 DOI: 10.1016/j.chemosphere.2014.04.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 04/03/2014] [Accepted: 04/06/2014] [Indexed: 05/03/2023]
Abstract
Mine wastes contain a mixture of metals and metalloids including arsenic (As) and cadmium (Cd). This study investigated the potential interaction between As and Cd in a rat model. Sprague Dawley rats were dosed with sodium arsenate via the oral (0, 0.5, 5 and 15 mg As kg(-1) b.w.) or intravenous (0.5 mg As kg(-1) b.w.) route to establish its dose-response relationship in terms of bioavailability and pharmacokinetic parameters. Bioavailability of As reduced when the dose of As increased. For the interaction study a fixed oral dose of As at 2.5 mg As kg(-1) b.w. solo and in combination with Cd as cadmium chloride at 3 or 6 mg Cd kg(-1) b.w. were administered to rats. Bioavailability of As was decreased by 34-35% in the presence of Cd. Elimination half-life of As was also decreased from 69 days in the As solo group to 13-22 days in the presence of 3 and 6 mg Cd kg(-1) b.w. respectively. Decreased urinary excretion of As and tissue accumulation were also observed. A probable explanation for these findings is that As co-administration with Cd could have resulted in the formation of less soluble cadmium-arsenic complexes in the guts of the rats. Nevertheless, such an interaction between As and Cd could only explained about 44-48% of the variation when mine waste materials containing both of these elements were administered to rats. This suggests other physical properties and chemical compound formation could contribute to the observed bioavailability of arsenic in complex environmental samples.
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Affiliation(s)
- Violet Diacomanolis
- The University of Queensland, National Research Centre for Environmental Toxicity, 39 Kessels Rd., Coopers Plains, Brisbane, QLD 4108, Australia.
| | - Barry N Noller
- The University of Queensland, Centre for Mine Land Rehabilitation, St Lucia, Brisbane 4072, Australia.
| | - Jack C Ng
- The University of Queensland, National Research Centre for Environmental Toxicity, 39 Kessels Rd., Coopers Plains, Brisbane, QLD 4108, Australia; CRC for Contamination Assessment and Remediation of the Environment, Mawson Lakes, Adelaide 5095, Australia.
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Mtimunye PJ, Chirwa EMN. Characterization of the biochemical-pathway of uranium (VI) reduction in facultative anaerobic bacteria. Chemosphere 2014; 113:22-29. [PMID: 25065785 DOI: 10.1016/j.chemosphere.2014.03.105] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 03/18/2014] [Accepted: 03/20/2014] [Indexed: 06/03/2023]
Abstract
Cultures of U(VI) reducing bacteria sourced from abandoned uranium mine tailing dam were evaluated for their ability to reduce U(VI) to U(IV). The species in the cultures reduced U(VI) in solutions with initial U(VI) concentration up to 400mgL(-)(1) under a near neutral pH of 6.5. The electron flow pathway and fate of reduced species was also analysed in the individual species in order to evaluate the potential for control and optimisation of the reduction potential at the biochemical level. The results showed that U(VI) reduction in live cells was completely blocked by the NADH-dehydrogenase inhibitor, rotenone (C23H22O6), and thioredoxin inhibitor, cadmium chloride (CdCl2), showing that U(VI) reduction involves the electron flow through NADH-dehydrogenase, a primary electron donor to the electron transport respiratory (ETR) system. Mass balance analysis of uranium species aided by visual and electron microscopy suggest that most U(VI) reduction occurred on the cell surface of the isolated species. This finding indicates the possibility of easy uranium recovery for beneficial use through biological remediation. Should the U(VI) be reduced inside the cell, recovery would require complete disruption of the cells and therefore would be difficult. The study contributes new knowledge on the underlying mechanisms in the U(VI) reduction in facultative anaerobes.
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Affiliation(s)
- Phalazane J Mtimunye
- Environmental Engineering Group, Department of Chemical Engineering, University of Pretoria, Pretoria 0002, South Africa.
| | - Evans M N Chirwa
- Environmental Engineering Group, Department of Chemical Engineering, University of Pretoria, Pretoria 0002, South Africa
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Zhao C, Xu J, Li Q, Li S, Wang P, Xiang F. Cloning and characterization of a Phragmites australis phytochelatin synthase (PaPCS) and achieving Cd tolerance in tall fescue. PLoS One 2014; 9:e103771. [PMID: 25133575 PMCID: PMC4136729 DOI: 10.1371/journal.pone.0103771] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 07/02/2014] [Indexed: 11/25/2022] Open
Abstract
The production of phytochelatins (PCs) provides an important means for plants to achieve tolerance to cadmium (Cd) toxicity. A reed gene encoding PC synthase (PaPCS) was isolated and its function tested through its heterologous expression in a strain of yeast sensitive to Cd. Subsequently, the Cd sensitive and high biomass accumulating species tall fescue was transformed either with PaPCS or PaGCS (a glutamyl cysteine synthetase gene of reed) on their own (single transformants), or with both genes together in the same transgene cassette (double transformant). The single and double transformants showed greater Cd tolerance and accumulated more Cd and PC than wild type plants, and their Cd leaf/root ratio content was higher. The ranking in terms of Cd and PC content for the various transgenic lines was double transformants>PaGCS single transformants>PaPCS single transformants>wild type. Thus PaGCS appears to exert a greater influence than PaPCS over PC synthesis and Cd tolerance/accumulation. The double transformant has interesting potential for phytoremediation.
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Affiliation(s)
- Cuizhu Zhao
- The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, School of Life Sciences, Shandong University, Jinan, Shandong, China
- College of Agronomy, Northwest A&F University, Yangling, Shanxi, China
| | - Jin Xu
- Key Laboratory of Agricultural Water Resources, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
| | - Qiang Li
- The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, School of Life Sciences, Shandong University, Jinan, Shandong, China
| | - Shuo Li
- The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, School of Life Sciences, Shandong University, Jinan, Shandong, China
| | - Peng Wang
- The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, School of Life Sciences, Shandong University, Jinan, Shandong, China
| | - Fengning Xiang
- The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, School of Life Sciences, Shandong University, Jinan, Shandong, China
- * E-mail:
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Sivanandhan G, Selvaraj N, Ganapathi A, Manickavasagam M. Enhanced biosynthesis of withanolides by elicitation and precursor feeding in cell suspension culture of Withania somnifera (L.) Dunal in shake-flask culture and bioreactor. PLoS One 2014; 9:e104005. [PMID: 25089711 PMCID: PMC4121209 DOI: 10.1371/journal.pone.0104005] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Accepted: 07/09/2014] [Indexed: 01/28/2023] Open
Abstract
The present study investigated the biosynthesis of major and minor withanolides of Withania somnifera in cell suspension culture using shake-flask culture and bioreactor by exploiting elicitation and precursor feeding strategies. Elicitors like cadmium chloride, aluminium chloride and chitosan, precursors such as cholesterol, mevalonic acid and squalene were examined. Maximum total withanolides detected [withanolide A (7606.75 mg), withanolide B (4826.05 mg), withaferin A (3732.81 mg), withanone (6538.65 mg), 12 deoxy withanstramonolide (3176.63 mg), withanoside IV (2623.21 mg) and withanoside V (2861.18 mg)] were achieved in the combined treatment of chitosan (100 mg/l) and squalene (6 mM) along with 1 mg/l picloram, 0.5 mg/l KN, 200 mg/l L-glutamine and 5% sucrose in culture at 4 h and 48 h exposure times respectively on 28th day of culture in bioreactor. We obtained higher concentrations of total withanolides in shake-flask culture (2.13-fold) as well as bioreactor (1.66-fold) when compared to control treatments. This optimized protocol can be utilized for commercial level production of withanolides from suspension culture using industrial bioreactors in a short culture period.
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Affiliation(s)
- Ganeshan Sivanandhan
- Department of Biotechnology and Genetic Engineering, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
- * E-mail: (GS); (MM)
| | | | - Andy Ganapathi
- Department of Biotechnology and Genetic Engineering, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - Markandan Manickavasagam
- Department of Biotechnology and Genetic Engineering, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
- * E-mail: (GS); (MM)
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Javed MT, Lindberg S, Greger M. Cadmium uptake in Elodea canadensis leaves and its interference with extra- and intra-cellular pH. Plant Biol (Stuttg) 2014; 16:615-621. [PMID: 24016297 DOI: 10.1111/plb.12086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Accepted: 07/03/2013] [Indexed: 06/02/2023]
Abstract
This study investigated cadmium (Cd) uptake in Elodea canadensis shoots under different photosynthetic conditions, and its effects on internal (cytosolic) and external pH. The plants were grown under photosynthetic (light) or non-photosynthetic (dark or in the presence of a photosynthetic inhibitor) conditions in the presence or absence of CdCl2 (0.5 μm) in a medium with a starting pH of 5.0. The pH-sensitive dye BCECF-AM was used to monitor cytosolic pH changes in the leaves. Cadmium uptake in protoplasts and leaves was detected with a Cd-specific fluorescent dye, Leadmium Green AM, and with atomic absorption spectrophotometry. During cultivation for 3 days without Cd, shoots of E. canadensis increased the pH of the surrounding water, irrespective of the photosynthetic conditions. This medium alkalisation was higher in the presence of CdCl2 . Moreover, the presence of Cd also increased the cation exchange capacity of the shoots. The total Cd uptake by E. canadensis shoots was independent of photosynthetic conditions. Protoplasts from plants exposed to 0.5 μm CdCl2 for 3 days did not exhibit significant change in cytosolic [Cd(2+)] or pH. However, exposure to CdCl2 for 7 days resulted in increased cytosolic [Cd(2+) ] as well as pH. The results suggest that E. canadensis subjected to a low CdCl2 concentration initially sequesters Cd into the apoplasm, but under prolonged exposure, Cd is transported into the cytosol and subsequently alters cytosolic pH. In contrast, addition of 10-50 μm CdCl2 directly to protoplasts resulted in immediate uptake of Cd into the cytosol.
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Affiliation(s)
- M T Javed
- Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden; Department of Botany, Government College University, Faisalabad, Pakistan
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Ronchetti SA, Miler EA, Duvilanski BH, Cabilla JP. Cadmium mimics estrogen-driven cell proliferation and prolactin secretion from anterior pituitary cells. PLoS One 2013; 8:e81101. [PMID: 24236210 PMCID: PMC3827476 DOI: 10.1371/journal.pone.0081101] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 10/09/2013] [Indexed: 12/21/2022] Open
Abstract
Cadmium (Cd) is a heavy metal of considerable occupational and environmental concern affecting wildlife and human health. Recent studies indicate that Cd, like other heavy metals, can mimic effects of 17β-estradiol (E2) involving E2 receptor (ER) activation. Lactotrophs, the most abundant cell type in anterior pituitary gland, are the main target of E2, which stimulates cell proliferation and increases prolactin secretion through ERα. The aim of this work was to examine whether Cd at nanomolar concentrations can induce cell proliferation and prolactin release in anterior pituitary cells in culture and whether these effects are mediated through ERs. Here we show that 10 nM Cd was able to stimulate lactotroph proliferation in anterior pituitary cell cultures from female Wistar rats and also in GH3 lactosomatotroph cell line. Proliferation of somatotrophs and gonadotrophs were not affected by Cd exposure. Cd promoted cell cycle progression by increasing cyclins D1, D3 and c-fos expression. Cd enhanced prolactin synthesis and secretion. Cd E2-like effects were blocked by the pure ERs antagonist ICI 182,780 supporting that Cd acts through ERs. Further, both Cd and E2 augmented full-length ERαexpression and its 46 kDa-splicing variant. In addition, when co-incubated Cd was shown to interact with E2 by inducing ERα mRNA expression which indicates an additive effect between them. This study shows for the first time that Cd at nanomolar concentration displays xenoestrogenic activities by inducing cell growth and stimulating prolactin secretion from anterior pituitary cells in an ERs-dependent manner. Cd acting as a potent xenoestrogen can play a key role in the aetiology of different pathologies of the anterior pituitary and in estrogen-responsive tissues which represent considerable risk to human health.
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Affiliation(s)
- Sonia A. Ronchetti
- Instituto de Investigaciones Biomédicas (UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Eliana A. Miler
- Instituto de Investigaciones Biomédicas (UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Beatriz H. Duvilanski
- Instituto de Investigaciones Biomédicas (UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Jimena P. Cabilla
- Instituto de Investigaciones Biomédicas (UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
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Miron VE, Boyd A, Zhao JW, Yuen TJ, Ruckh JM, Shadrach JL, van Wijngaarden P, Wagers AJ, Williams A, Franklin RJM, Ffrench-Constant C. M2 microglia and macrophages drive oligodendrocyte differentiation during CNS remyelination. Nat Neurosci 2013; 16:1211-1218. [PMID: 23872599 DOI: 10.1038/2fnn.3469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Accepted: 06/14/2013] [Indexed: 05/28/2023]
Abstract
The lack of therapies for progressive multiple sclerosis highlights the need to understand the regenerative process of remyelination that can follow CNS demyelination. This involves an innate immune response consisting of microglia and macrophages, which can be polarized to distinct functional phenotypes: pro-inflammatory (M1) and anti-inflammatory or immunoregulatory (M2). We found that a switch from an M1- to an M2-dominant response occurred in microglia and peripherally derived macrophages as remyelination started. Oligodendrocyte differentiation was enhanced in vitro with M2 cell conditioned media and impaired in vivo following intra-lesional M2 cell depletion. M2 cell densities were increased in lesions of aged mice in which remyelination was enhanced by parabiotic coupling to a younger mouse and in multiple sclerosis lesions that normally show remyelination. Blocking M2 cell-derived activin-A inhibited oligodendrocyte differentiation during remyelination in cerebellar slice cultures. Thus, our results indicate that M2 cell polarization is essential for efficient remyelination and identify activin-A as a therapeutic target for CNS regeneration.
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Affiliation(s)
- Veronique E Miron
- MRC Centre for Regenerative Medicine/MS Society Centre for Translational Research, University of Edinburgh, Edinburgh, UK
| | - Amanda Boyd
- MRC Centre for Regenerative Medicine/MS Society Centre for Translational Research, University of Edinburgh, Edinburgh, UK
| | - Jing-Wei Zhao
- Wellcome Trust and MRC Cambridge Stem Cell Institute and Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Tracy J Yuen
- MRC Centre for Regenerative Medicine/MS Society Centre for Translational Research, University of Edinburgh, Edinburgh, UK
- Wellcome Trust and MRC Cambridge Stem Cell Institute and Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Julia M Ruckh
- Wellcome Trust and MRC Cambridge Stem Cell Institute and Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Jennifer L Shadrach
- Howard Hughes Medical Institute and Department of Stem Cell and Regenerative Biology, Harvard University, Harvard Stem Cell Institute & Joslin Diabetes Center, Cambridge, USA
| | - Peter van Wijngaarden
- Wellcome Trust and MRC Cambridge Stem Cell Institute and Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Amy J Wagers
- Howard Hughes Medical Institute and Department of Stem Cell and Regenerative Biology, Harvard University, Harvard Stem Cell Institute & Joslin Diabetes Center, Cambridge, USA
| | - Anna Williams
- MRC Centre for Regenerative Medicine/MS Society Centre for Translational Research, University of Edinburgh, Edinburgh, UK
| | - Robin J M Franklin
- Wellcome Trust and MRC Cambridge Stem Cell Institute and Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Charles Ffrench-Constant
- MRC Centre for Regenerative Medicine/MS Society Centre for Translational Research, University of Edinburgh, Edinburgh, UK
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Bilka F, Balážová A, Bilková A, Holková I. [Effect of abiotic elicitation on the sanguinarine production and polyphenol oxidase activity in the suspension culture of Eschscholtzia californica CHAM]. Ceska Slov Farm 2013; 62:169-173. [PMID: 24047145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Elicitation of plant in vitro cultures represents a biotechnological tool to improve the production of secondary metabolites. In this study, the effect of AgNO3 and CdCl2 on the sanguinarine production by the suspension culture of Eschscholtzia californica CHAM. was investigated. Elicitors were added to the cultures at the 14th day of subcultivation and their effect on the sanguinarine production was evaluated after a 48 h exposure. AgNO3 at the concentration of 0.075 mmol.l-1 and CdCl2 at the concentration of 4 mmol.l-1 induced a ca. 5.2- and 5.6-multiple increase in sanguinarine synthesis, respectively. This amount represents probably the maximal production, because a further increase in the elicitors concentrations did not increase sanguinarine production. Both abiotic elicitors induced a polyphenol oxidase specific activity increase. Polyphenol oxidase is probably involved in the biosynthesis of sanguinarine at the level of dopamine formation. Dopamine is a precursor of (S)-norcoclaurine, the first intermediate with the benzylisoquinoline structure.
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Ponterio G, Tassone A, Sciamanna G, Riahi E, Vanni V, Bonsi P, Pisani A. Powerful inhibitory action of mu opioid receptors (MOR) on cholinergic interneuron excitability in the dorsal striatum. Neuropharmacology 2013; 75:78-85. [PMID: 23891638 DOI: 10.1016/j.neuropharm.2013.07.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 06/12/2013] [Accepted: 07/03/2013] [Indexed: 11/18/2022]
Abstract
Cholinergic interneurons (ChIs) of dorsal striatum play a key role in motor control and in behavioural learning. Neuropeptides regulate cholinergic transmission and mu opioid receptor (MOR) activation modulates striatal acetylcholine release. However, the mechanisms underlying this effect are yet uncharacterized. Here, we examined the electrophysiological responses of ChIs to the selective MOR agonist, DAMGO {[D-Ala2-MePhe4-Gly(ol)5] enkephalin}. We observed a robust, dose-dependent inhibition of spontaneous firing activity (0.06-3 μM) which was reversible upon drug washout and blocked by the selective antagonist D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Pen-Thr-NH2 (CTOP) (1 μM). Voltage-clamp analysis of the reversal potential of the DAMGO effect did not provide univocal results, indicating the involvement of multiple membrane conductances. The MOR-dependent effect persisted in the presence of GABAA and ionotropic glutamate receptor antagonists, ruling out an indirect effect. Additionally, it depended upon G-protein activation, as it was prevented by intrapipette GDP-β-S. Because D2 dopamine receptors (D2R) and MOR share a common post-receptor signalling pathway, occlusion experiments were performed with maximal doses of both D2R and MOR agonists. The D2R agonist quinpirole decreased spike discharge, which was further reduced by adding DAMGO. Then, D2R or MOR antagonists were used to challenge the response to the respective agonists, DAMGO or quinpirole. No cross-effect was observed, suggesting that the two receptors act independently. Our findings demonstrate a postsynaptic inhibitory modulation by MOR on ChIs excitability. Such opioidergic regulation of cholinergic transmission might contribute to shape information processing in basal ganglia circuits, and represent a potential target for pharmacological intervention.
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Affiliation(s)
- G Ponterio
- Department of System Medicine, University of Rome "Tor Vergata", via Montpellier, Rome 00133, Italy; Laboratory of Neurophysiology and Plasticity, Fondazione Santa Lucia, IRCCS, Rome, Italy
| | - A Tassone
- Laboratory of Neurophysiology and Plasticity, Fondazione Santa Lucia, IRCCS, Rome, Italy
| | - G Sciamanna
- Laboratory of Neurophysiology and Plasticity, Fondazione Santa Lucia, IRCCS, Rome, Italy
| | - E Riahi
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; (d)Physiology Department, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - V Vanni
- Laboratory of Neurophysiology and Plasticity, Fondazione Santa Lucia, IRCCS, Rome, Italy
| | - P Bonsi
- Laboratory of Neurophysiology and Plasticity, Fondazione Santa Lucia, IRCCS, Rome, Italy
| | - A Pisani
- Department of System Medicine, University of Rome "Tor Vergata", via Montpellier, Rome 00133, Italy; Laboratory of Neurophysiology and Plasticity, Fondazione Santa Lucia, IRCCS, Rome, Italy.
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Jahangir T, Khan TH, Prasad L, Sultana S. Alleviation of free radical mediated oxidative and genotoxic effects of cadmium by farnesol in Swiss albino mice. Redox Rep 2013; 10:303-10. [PMID: 16438802 DOI: 10.1179/135100005x83671] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Farnesol is an isoprenoid found in essential oils of ambrette seeds, citronella and in various aromatic plants. Exposure to cadmium from various sources affects the renal system adversely and Cd is an established genotoxic agent. In the present study, we evaluated the antigenotoxic and antioxidant efficacy of farnesol against cadmium chloride (CdCl2)-induced renal oxidative stress and genotoxicity in Swiss albino mice. Single, intraperitoneal doses of CdCl2(5 mg/kg body weight) for 24 h resulted in a significant (P < 0.001) increase in chromosomal aberration and micronuclei formation. The oral administration of farnesol at two doses (1% and 2% per kg body weight) for seven consecutive days showed significant (P < 0.05) suppression of the genotoxic effects of CdCl2 in the modulator groups. To study the mechanism by which farnesol exerts its antigenotoxic potential, enzymes involved in metabolism and detoxification were estimated. CdCl2 intoxication adversely affected the renal antioxidant armory and increased TBARS formation and xanthine oxidase levels significantly (P < 0.001). Farnesol showed a significant (P < 0.001) recovery in antioxidant status viz, GSH content (and its dependent enzymes) and catalase activity. Farnesol pretreatment in CdCl2-intoxicated mice showed marked (P < 0.001) suppression of TBARS' formation and XO activity. Our results support the conclusion that the anticlastogenic effect of farnesol could be due to restoration of antioxidants and inhibition of oxidative damage.
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Affiliation(s)
- Tamanna Jahangir
- Section of Chemoprevention and Nutrition Toxicology, Department of Medical Elementology and Toxicology, Jamia Hamdard, Hamdard University, Hamdard Nagar, New Delhi, India
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Meng XL, Liu M, Jiang KY, Wang BJ, Tian X, Sun SJ, Luo ZY, Qiu CW, Wang L. De novo characterization of Japanese scallop Mizuhopecten yessoensis transcriptome and analysis of its gene expression following cadmium exposure. PLoS One 2013; 8:e64485. [PMID: 23741332 PMCID: PMC3669299 DOI: 10.1371/journal.pone.0064485] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 04/15/2013] [Indexed: 01/19/2023] Open
Abstract
Background Japanese scallop has been cultured on a large-scale in China for many years. However, serious marine pollution in recent years has resulted in considerable loss to this industry. Moreover, due to the lack of genomic resources, limited research has been carried out on this species. To facilitate the understanding at molecular level immune and stress response mechanism, an extensive transcriptomic profiling and digital gene expression (DGE) database of Japanese scallop upon cadmium exposure was carried out using the Illumina sequencing platform. Results RNA-seq produced about 112 million sequencing reads from the tissues of adult Japanese scallops. These reads were assembled into 194,839 non-redundant sequences with open reading frame (ORF), of which 14,240 putative amino acid sequences were assigned biological function annotation and were annotated with gene ontology and eukaryotic orthologous group terms. In addition, we identified 720 genes involved in response to stimulus and 302 genes involved in immune-response pathways. Furthermore, we investigated the transcriptomic changes in the gill and digestive gland of Japanese scallops following cadmium exposure using a tag-based DGE system. A total of 7,556 and 3,002 differentially expressed genes were detected, respectively, and functionally annotated with KEGG pathway annotations. Conclusion This study provides a comprehensive transcripts sequence resource for the Japanese scallop and presents a survey of gene expression in response to heavy metal exposure in a non-model marine invertebrate via the Illumina sequencing platform. These results may contribute to the in-depth elucidation of the molecular mechanisms involved in bivalve responses to marine pollutants.
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Affiliation(s)
- Xiao-lin Meng
- R&D Center of Marine, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- University of Chinese Academy of Sciences, Beijing, China
- College of Animal Science and Veterinary Medicine, Shanxi Agriculture University, Taigu, China
| | - Mei Liu
- R&D Center of Marine, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Ke-yong Jiang
- R&D Center of Marine, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Bao-jie Wang
- R&D Center of Marine, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Xue Tian
- College of Animal Science and Veterinary Medicine, Shanxi Agriculture University, Taigu, China
| | - Shu-juan Sun
- R&D Center of Marine, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Zuo-yong Luo
- R&D Center of Marine, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Chu-wen Qiu
- R&D Center of Marine, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Lei Wang
- R&D Center of Marine, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- * E-mail:
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