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Kuraś R, Stępnik M, Grobelny J, Tomaszewska E, Stanisławska M, Domeradzka-Gajda K, Wąsowicz W, Janasik B. Distribution of molybdenum in soft tissues and blood of rats after intratracheal instillation of molybdenum(IV) sulfide nano- and microparticles. Toxicol Res 2024; 40:163-177. [PMID: 38223673 PMCID: PMC10786813 DOI: 10.1007/s43188-023-00213-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 09/08/2023] [Accepted: 09/26/2023] [Indexed: 01/16/2024] Open
Abstract
There is still little literature data on the toxicity and safety of the commonly used molybdenum (Mo) disulfide which is present in the working as well as living environments. Thus, an experiment was carried out involving rats, with single and repeated intratracheal exposure (in the latter case, 7 administrations at 2-week intervals with the analysis performed after 90 days) to lower (1.5 mg Mo kg-1 b.w.) and higher (5 mg Mo kg-1 b.w.) doses of molybdenum(IV) sulfide nanoparticles (MoS2-NPs) and microparticles (MoS2-MPs). The analysis of Mo concentrations in the tail and heart blood as well as in soft tissues (lung, liver, spleen, brain), after mineralization and bioimaging, was meant to facilitate an assessment of its accumulation and potential effects on the body following short- and long-term exposure. The multi-compartment model with an exponential curve of Mo concentration over time with different half-lives for the distribution and elimination phases of MoS2-MPs and MoS2-NPs was observed. After 24 h of exposure, a slight increase in Mo concentration in blood was observed. Next, Mo concentration indicated a decrease in blood concentration from 24 h to day 14 (the Mo concentration before the second administration), below the pre-exposure concentration. The next phase was linear, less abrupt and practically flat, but with an increasing trend towards the end of the experiment. Significantly higher Mo concentrations in MoS2-NPs and MoS2-MPs was found in the lungs of repeatedly exposed rats compared to those exposed to a single dose. The analysis of Mo content in the liver and the spleen tissue showed a slightly higher concentration for MoS2-NPs compared to MoS2-MPs. The results for the brain were below the calculated detection limit. Results were consistent with results obtained by bioimaging technique.
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Affiliation(s)
- Renata Kuraś
- Central Laboratory, Nofer Institute of Occupational Medicine, 8 Teresy St., 91-348 Łódź, Poland
| | - Maciej Stępnik
- QSAR LAB Ltd, 3 Lipy St., 80-172 Gdańsk, Poland
- Department of Toxicology and Carcinogenesis, Nofer Institute of Occupational Medicine, 8 Teresy St., 91-348 Łódź, Poland
| | - Jarosław Grobelny
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Łódź, 163 Pomorska St., 90-236 Łódź, Poland
| | - Emilia Tomaszewska
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Łódź, 163 Pomorska St., 90-236 Łódź, Poland
| | - Magdalena Stanisławska
- Central Laboratory, Nofer Institute of Occupational Medicine, 8 Teresy St., 91-348 Łódź, Poland
| | - Katarzyna Domeradzka-Gajda
- Department of Toxicology and Carcinogenesis, Nofer Institute of Occupational Medicine, 8 Teresy St., 91-348 Łódź, Poland
| | - Wojciech Wąsowicz
- Professor Emeritus, Nofer Institute of Occupational Medicine, 8 Teresy St., 91-348 Łódź, Poland
| | - Beata Janasik
- Department of Chemical Safety, Nofer Institute of Occupational Medicine, 8 Teresy St., 91-348 Łódź, Poland
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Zhou S, Zhang C, Xiao Q, Zhuang Y, Gu X, Yang F, Xing C, Hu G, Cao H. Effects of Different Levels of Molybdenum on Rumen Microbiota and Trace Elements Changes in Tissues from Goats. Biol Trace Elem Res 2016; 174:85-92. [PMID: 27147434 DOI: 10.1007/s12011-016-0706-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Accepted: 04/13/2016] [Indexed: 01/15/2023]
Abstract
Molybdenum (Mo) is an essential trace element for animals and human beings. However, the negative effects on rumen function and distribution of trace elements in tissues induced by excessive Mo have not been well understood. Therefore, the purpose of present study was to investigate the impact of Mo on rumen microbiota, distribution of trace elements in various organs, and hematological parameters of goats. A total of 36 goats were randomly distributed into three groups with equal number and low-Mo and high-Mo groups were orally administered ammonium molybdate at 15 and 45 mg · Mo · kg-1 · BW respectively, while the control group received corresponding quantitative deionized water. The results showed that the total number of ciliate and protozoa protein concentration decreased significantly (P < 0.01) on days 25 and 50. Concentrations of ammonia nitrogen and bacterial protein were significantly higher (P < 0.05) in low-Mo group, while they were lower (P < 0.05) in high-Mo group than the control group on days 25 and 50. In addition, Mo accumulated in serum and all detected tissues. Copper (Cu) and zinc (Zn) contents significantly decreased (P < 0.05) in hair and serum on days 25 and 50, while Cu contents increased (P < 0.05) and the change of Zn contents were not obvious (P > 0.05) in other tissues on days 25 and 50. Besides, there was no obvious variation in iron (Fe) contents during whole experiment period (P > 0.05). Furthermore, excessive Mo content had no significant effect on red blood cell (RBC) counts and hemoglobin (HGB) concentration (P > 0.05) on days 25 and 50, while white blood cell (WBC) counts increased significantly (P < 0.05) on day 50. These results indicated that excessive Mo content could impact the balance of ruminal microorganisms and interfere with the absorption and distribution of Mo and Cu mainly.
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Affiliation(s)
- Sihui Zhou
- Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agriculture University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang, 330045, Jiangxi, China
| | - Caiying Zhang
- Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agriculture University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang, 330045, Jiangxi, China
| | - Qingyang Xiao
- Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agriculture University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang, 330045, Jiangxi, China
| | - Yu Zhuang
- Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agriculture University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang, 330045, Jiangxi, China
| | - Xiaolong Gu
- Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agriculture University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang, 330045, Jiangxi, China
| | - Fan Yang
- Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agriculture University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang, 330045, Jiangxi, China
| | - Chenghong Xing
- Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agriculture University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang, 330045, Jiangxi, China
| | - Guoliang Hu
- Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agriculture University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang, 330045, Jiangxi, China.
| | - Huabin Cao
- Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agriculture University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang, 330045, Jiangxi, China.
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Mohajeri G, Norouzian MA, Mohseni M, Afzalzadeh A. Changes in blood metals, hematology and hepatic enzyme activities in lactating cows reared in the vicinity of a lead-zinc smelter. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2014; 92:693-697. [PMID: 24711052 DOI: 10.1007/s00128-014-1270-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 03/27/2014] [Indexed: 06/03/2023]
Abstract
The present study examines blood metals levels and health parameters in dairy cows reared in areas around a Pb-Zn industrial complex located near the city of Zanjan-Iran. Blood samples (n = 27) were collected from cows reared around the smelter. Blood samples (n = 25) were also collected from cows reared in areas where chances of Pb contamination of soil, water and fodder do not exist, to serve as reference. The mean blood Pb level in cows around the smelter (1.09 ± 0.26 µg/mL) was higher than the cows from the reference area (0.72 ± 0.25 µg/mL). Hematocrit (PCV) levels decreased in cows reared in the near of smelter (24.37 % ± 2.22 %) compared to the reference site (27.54 % ± 2.87 %). Hemoglobin (Hb) concentration and mean corpuscular Hb concentration value in cows from the area around the smelter were statistically lower than the cows reared in reference area. Activities of alanine transaminase and aspartate aminotransferase (IU/l) were significantly higher in cows around the smelter as compared to reference animals.
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Affiliation(s)
- G Mohajeri
- Department of Animal Science, College of Abouraihan, University of Tehran, P.O. Box 11365-4117, Tehran, Iran
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