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Kiss L, Bocsik A, Walter FR, Ross J, Brown D, Mendenhall BA, Crews SR, Lowry J, Coronado V, Thompson DE, Sipos P, Szabó-Révész P, Deli MA, Petrikovics I. From the Cover: In Vitro and In Vivo Blood-Brain Barrier Penetration Studies with the Novel Cyanide Antidote Candidate Dimethyl Trisulfide in Mice. Toxicol Sci 2018; 160:398-407. [PMID: 28973547 DOI: 10.1093/toxsci/kfx190] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Recent in vitro and in vivo studies highlight the strong potential of dimethyl trisulfide (DMTS) as an antidote for cyanide (CN) intoxication. Due to its high oxygen demand, the brain is one of the main target organs of CN. The blood-brain barrier (BBB) regulates the uptake of molecules into the brain. In the literature, there is no data about the ability of DMTS to penetrate the BBB. Therefore, our aim was to test the in vitro BBB penetration of DMTS and its in vivo pharmacokinetics in blood and brain. The in vitro BBB penetration of DMTS was measured by using a parallel artificial membrane permeability assay (BBB-PAMPA), and a triple BBB co-culture model. The pharmacokinetics was investigated in a mouse model by following the DMTS concentration in blood and brain at regular time intervals following intramuscular administration. DMTS showed high penetrability in both in vitro systems (apparent permeability coefficients: BBB-PAMPA 11.8 × 10-6 cm/s; cell culture 158 × 10-6 cm/s) without causing cell toxicity and leaving the cellular barrier intact. DMTS immediately absorbed into the blood after the intramuscular injection (5 min), and rapidly penetrated the brain of mice (10 min). In addition to the observed passive diffusion in the in vitro studies, the contribution of facilitated and/or active transport to the measured high permeability of DMTS in the pharmacokinetic studies can be hypothesized. Earlier investigations demonstrating the antidotal efficacy of DMTS against CN together with the present results highlight the promise of DMTS as a brain-protective CN antidote.
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Affiliation(s)
- Lóránd Kiss
- Department of Chemistry, Sam Houston State University, Huntsville, Texas 77341
| | - Alexandra Bocsik
- Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Fruzsina R Walter
- Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - James Ross
- Department of Chemistry, Sam Houston State University, Huntsville, Texas 77341
| | - Denise Brown
- Department of Chemistry, Sam Houston State University, Huntsville, Texas 77341
| | - Brooke A Mendenhall
- Department of Chemistry, Sam Houston State University, Huntsville, Texas 77341
| | - Sarah R Crews
- Department of Chemistry, Sam Houston State University, Huntsville, Texas 77341
| | - Jana Lowry
- Department of Chemistry, Sam Houston State University, Huntsville, Texas 77341
| | - Valerie Coronado
- Department of Chemistry, Sam Houston State University, Huntsville, Texas 77341
| | - David E Thompson
- Department of Chemistry, Sam Houston State University, Huntsville, Texas 77341
| | - Peter Sipos
- Department of Pharmaceutical Technology, University of Szeged, Szeged, Hungary
| | | | - Mária A Deli
- Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Ilona Petrikovics
- Department of Chemistry, Sam Houston State University, Huntsville, Texas 77341
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Tang T, Li X, Liu X, Wang Y, Ji C, Wang Y, Wang X, Xie S, Liu F, Wang J. A single-domain rhodanese homologue MnRDH1 helps to maintain redox balance in Macrobrachium nipponense. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 78:160-168. [PMID: 28987482 DOI: 10.1016/j.dci.2017.09.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 09/29/2017] [Accepted: 09/30/2017] [Indexed: 06/07/2023]
Abstract
Rhodaneses are known to catalyze in vitro the transfer of a sulfane sulfur atom from thiosulfate to cyanide with concomitant formation of thiocyanate, however, their biological functions remain speculative despite the main role is considered as detoxifying cyanide especially in animal livers. In this study, we characterized a single-domain rhodanese homologue, MnRDH1, from Macrobrachium nipponense. We found MnRDH1 with the highest expression in hemocytes. Upon Aeromonas hydrophila challenge, expression of MnRDH1 was up-regulated in various tissues, including hepatopancreas, gill, intestine and hemocytes. RNAi knockdown of MnRDH1 led to rapid increases of malondialdehyde content, which reveals that MnRDH1 deficiency causes oxidative stress. The expression of MnRDH1 in hepatopancreas was significantly increased in response to the doxorubicin-induced oxidative stress, indicating the gene is oxidative stress inducible. We transformed E. coli with MnRDH1 and the mutant MnRDH1C75A, and found significant rhodanese activity of the recombinant protein of MnRDH1 in vitro, but detected no enzyme activity of the mutant MnRDH1C75A. When under the oxidative insult by H2O2, the MnRDH1 transformed E. coli had significantly enhanced survival rates compared to those bacteria transformed with MnRDH1C75A. In conclusion, our study demonstrates that rhodanese in M. nipponense confers oxidative stress tolerance, and thus renders an evidence for the notion that rhodanese family genes act a critical role in antioxidant defenses.
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Affiliation(s)
- Ting Tang
- The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding, Hebei, 071002, China
| | - Xiang Li
- The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding, Hebei, 071002, China
| | - Xin Liu
- The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding, Hebei, 071002, China
| | - Yili Wang
- The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding, Hebei, 071002, China
| | - Congcong Ji
- The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding, Hebei, 071002, China
| | - Yu Wang
- The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding, Hebei, 071002, China
| | - Xiaochun Wang
- Department of Surgical Oncology, Affiliated Hospital of Hebei University, Baoding, China
| | - Song Xie
- The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding, Hebei, 071002, China
| | - Fengsong Liu
- The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding, Hebei, 071002, China.
| | - Jianhui Wang
- Department of Pathology, Yale University School of Medicine, New Haven, USA.
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Huang H, Yie S, Liu Y, Wang C, Cai Z, Zhang W, Lan J, Huang X, Luo L, Cai K, Hou R, Zhang Z. Dietary resources shape the adaptive changes of cyanide detoxification function in giant panda (Ailuropoda melanoleuca). Sci Rep 2016; 6:34700. [PMID: 27703267 PMCID: PMC5050549 DOI: 10.1038/srep34700] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 09/19/2016] [Indexed: 11/16/2022] Open
Abstract
The functional adaptive changes in cyanide detoxification in giant panda appear to be response to dietary transition from typical carnivore to herbivorous bear. We tested the absorption of cyanide contained in bamboo/bamboo shoots with a feeding trial in 20 adult giant pandas. We determined total cyanide content in bamboo shoots and giant panda’s feces, levels of urinary thiocyanate and tissue rhodanese activity using color reactions with a spectrophotometer. Rhodanese expression in liver and kidney at transcription and translation levels were measured using real-time RT-PCR and immunohistochemistry, respectively. We compared differences of rhodanese activity and gene expressions among giant panda, rabbit (herbivore) and cat (carnivore), and between newborn and adult giant pandas. Bamboo shoots contained 3.2 mg/kg of cyanide and giant pandas absorbed more than 65% of cyanide. However, approximately 80% of absorbed cyanide was metabolized to less toxic thiocyanate that was discharged in urine. Rhodanese expression and activity in liver and kidney of giant panda were significantly higher than in cat, but lower than in rabbit (all P < 0.05). Levels in adult pandas were higher than that in newborn cub. Phylogenetic analysis of both nucleotide and amino acid sequences of the rhodanese gene supported a closer relationship of giant panda with carnivores than with herbivores.
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Affiliation(s)
- He Huang
- Chengdu Research Base of Giant Panda Breeding, Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu, 610081, China
| | - Shangmian Yie
- Chengdu Research Base of Giant Panda Breeding, Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu, 610081, China
| | - Yuliang Liu
- Chengdu Research Base of Giant Panda Breeding, Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu, 610081, China
| | - Chengdong Wang
- Chengdu Research Base of Giant Panda Breeding, Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu, 610081, China
| | - Zhigang Cai
- Chengdu Research Base of Giant Panda Breeding, Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu, 610081, China
| | - Wenping Zhang
- Chengdu Research Base of Giant Panda Breeding, Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu, 610081, China
| | - Jingchao Lan
- Chengdu Research Base of Giant Panda Breeding, Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu, 610081, China
| | - Xiangming Huang
- Chengdu Research Base of Giant Panda Breeding, Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu, 610081, China
| | - Li Luo
- Chengdu Research Base of Giant Panda Breeding, Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu, 610081, China
| | - Kailai Cai
- Chengdu Research Base of Giant Panda Breeding, Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu, 610081, China
| | - Rong Hou
- Chengdu Research Base of Giant Panda Breeding, Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu, 610081, China
| | - Zhihe Zhang
- Chengdu Research Base of Giant Panda Breeding, Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu, 610081, China
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