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Shipelin VA, Shumakova AA, Musaeva AD, Trushina EN, Mustafina OK, Markova YM, Bykova IB, Masyutin AG, Gmoshinsky IV, Khotimchenko SA. [Peroral toxicological assessment of bentonite nanoclay used in the food industry]. Vopr Pitan 2020; 89:71-85. [PMID: 32790260 DOI: 10.24411/0042-8833-2020-10031] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 05/18/2020] [Indexed: 11/20/2022]
Abstract
Bentonite nanoclay (NC) manufactured from the natural sedimentary mineral bentonite contains more than 90% montmorillonite. Currently, it is widely used in food industry as processed aids - adsorbents for the purification of vegetable oils and beverages. Clay minerals have also applications as food additives and components in composite package materials. In vitro studies have shown that various forms of NC exerted cytotoxicity in many cell lines, whereas in vivo evidence of NC oral toxicity is contradictory. Therefore, this study aimed to assess the acute oral toxicity of NC and to evaluate its toxicological characteristics in a subacute 92-day experiment on Wistar rats with a daily oral administration in doses of 1, 10, and 100 mg/kg body weight (bw). Material and methods. The NC acute toxicity was evaluated in 8 male and 8 female rats with the initial bw 236±10 and 203± 10 g, respectively. NC was administered as an aqueous dispersion intragastrically at a dose of 5 g/kg bw. On the 14th day (end of the experiment), an autopsy of the chest and abdominal organs was performed. The subacute experiment was carried out on 64 male rats with an average initial bw of 117±7 g. During the experiment the levels of anxiety and memory function were evaluated using the test "Conditional reflex of passive avoidance". On the 90th day of the experiment, diurnal urinary excretion of creatinine and selenium was evaluated. At the end of the experiment, the integral parameters, the state of the intestinal wall permeability were assessed. Hematological and biochemical parameters were examined in blood, the content of non-protein thiols and the number of cells in apoptosis were determined in liver, and the state of cultivated microbiome populations was studied in cecum. Results. The results of the determination of NC acute toxicity showed the absence of rat's mortality and specific pathological changes in the internal organs at a dose as large as 5000 mg/kg bw, which allowed attributing NC to the V hazard class. Nevertheless, under the conditions of the 92-day experiment, NC caused some adverse biological effects on rat's organism. So, even at an NC dose of 1 mg/kg bw, there was a sharp inhibition of the symbiotic bifidobacterium growth, an increase in platelet count, in LDL and the LDL/HDL ratio, together with the presence of hypertriglyceridemia. At a dose of 10 mg/kg bw, an increase in spleen mass and a decrease in the de Ritis coefficient (AsAT/AlAT) were established. At a dose of 100 mg/kg bw there were shifts in the leukocyte blood count, an excessive enterococci growth in the cecum, significantly increased animal bw, along with the decrease of AsAT/AlAT and the level of serum nitrogen metabolites, indirectly indicating inhibition of catabolic processes. However, at the highest dose of NC, intestinal absorption of the protein antigen - ovalbumin, was apparently completely blocked. Conclusion. The data obtained have shown that NC has potentially adverse effects on the rats mainly at a dose of 100 mg/kg bw, nevertheless, its NOAEL in the 92-day daily oral exposure experiment is probably less than 1 mg/kg bw.
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Affiliation(s)
- V A Shipelin
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - A A Shumakova
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - A D Musaeva
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - E N Trushina
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - O K Mustafina
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - Yu M Markova
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - I B Bykova
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - A G Masyutin
- Lomonosov Moscow State University, 119991, Moscow, Russian Federation
| | - I V Gmoshinsky
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - S A Khotimchenko
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation.,I.M. Sechenov First Moscow State Medical University of Ministry of Healthcare of the Russian Federation (Sechenov University), 119991 Moscow, Russian Federation
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Berdnikova NG, Dontsov AE, Erokhina MV, Zak PP, Lapina VA, Masyutin AG, Menshov VA, Naumov VV, Onishchenko GE, Pavich TA, Pershukevich PP, Sakina NL, Trofimov AV, Trofimova NN, Tsaplev YB, Yablonskaya OI. Nanodiamond–Coumarin Complexes: Spectral-Luminescence Properties and Interaction with Macrophages. Russ J Phys Chem B 2020. [DOI: 10.1134/s1990793119060150] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Shipelin VA, Shumakova AA, Masyutin AG, Chernov AI, Sidorova YS, Gmoshinski IV, Khotimchenko SA. In Vivo Subacute Oral Toxicity Assessment of Multiwalled Carbon Nanotubes: Characteristic of Nanomaterial and Integral Indicators. ACTA ACUST UNITED AC 2018. [DOI: 10.1134/s199507801705010x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Masyutin AG, Erokhina MV, Sychevskaya KA, Gusev AA, Vasyukova IA, Tkachev AG, Smirnova EA, Onishchenko GE. Multiwalled Carbon Nanotubules Induce Pathological Changes in the Digestive Organs of Mice. Bull Exp Biol Med 2016; 161:125-30. [DOI: 10.1007/s10517-016-3361-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Indexed: 12/25/2022]
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Stepanova OV, Chadin AV, Masyutin AG, Kulikova TG, Poltavceva RA, Masenko VP, Sukhikh GT. Myosin-activating protein kinases are possible regulators of nonmuscle myosin in developing human heart. Bull Exp Biol Med 2012; 152:198-201. [PMID: 22808459 DOI: 10.1007/s10517-011-1487-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We studied the localization of myosin-activating protein kinases in cardiomyocytes obtained from fetal human heart at 8-9 weeks gestation. It was found that at this developmental stage, smooth muscle/nonmuscle myosin light chain kinase (MLCK, 108 kDa) and its high-molecular weight isoform (MLCK, 210 kDa), skeletal MLCK and death-associated protein kinase (DAPK) are co-localized with nonmuscle myosin IIB in the premyofibrils. The data obtained suggest that cardiac nonmuscle myosin at 8-9 weeks gestation may serve as the substrate of the studied myosin-activating protein kinases that are likely to cooperatively regulate the formation of myofibrils. We revealed high-molecular weight isoform of smooth muscle/nonmuscle kinase MLCK-210 in developing human heart and determined the ratios of MLCK-108 and MLCK-210 at different gestational stages. In this case, the approximate time period of changes in these isoforms ratio was revealed (between 8-9 and 13 weeks), that can be associated with functional changes in the developing myocardium.
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Affiliation(s)
- O V Stepanova
- Institute of Clinical Cardiology, Russian Cardiology Research-and-Production Center, Ministry of Health Care and Social Development of the Russian Federation, Moscow, Russia.
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Stepanova OV, Chadin AV, Masyutin AG, Kulikova TG, Gurin YV, Sergeeva IA, Shirinsky VP. Rho-associated protein kinase is involved in establishing the cardiomyocyte contractile phenotype. Biophysics (Nagoya-shi) 2010. [DOI: 10.1134/s0006350910050167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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