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Monosodium Glutamate Induces Cytotoxicity in Rat Liver via Mitochondrial Permeability Transition Pore Opening.
Cell Biochem Biophys. 2020 Dec; 78(4):429-437.CB

Abstract

Monosodium glutamate (MSG) is a major food additive used as a flavor enhancer. A lot of controversies have been generated over the use of MSG. The present study therefore investigated whether MSG would induce cytotoxicity via the induction of mitochondrial permeability transition (mPT) pore opening. 36 male albino rats were used for this study. The rats were equally divided into six groups: group I is the control while group II, III, IV, V, and VI were orally treated with MSG (25, 50, 100, 200, and 400 mg/kg) daily for 28 days. The opening of the pore, cytochrome c release, mitochondrial ATPase activity, mitochondrial lipid peroxidation and hepatic DNA fragmentation were determined spectrophotometrically. Histological assessment of prostate and brain was carried out. The results show that MSG at concentrations ≤30 µg/ml did not induce mPT pore opening while higher concentrations caused significant induction of pore opening. Also, at lower doses (25 and 50 mg/kg), MSG did not cause any significant induction of mPT pore opening while at higher doses, there were significant induction of pore opening. Similar trend of results was recorded for cytochrome c release, mitochondrial ATPase activity and lipid peroxidation. The histological results show that at low doses (25 and 50 mg/kg), no significant lesion was observed while higher doses caused benign prostatic hyperplasia (BPH) in the prostate and necrotic damage in the brain. MSG administration at low dose is tolerable while high doses induce cytotoxicity via mPT pore opening.

Authors+Show Affiliations

Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria. mr_adeola@yahoo.com.Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria.Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32964329

Citation

Olowofolahan, Adeola Oluwakemi, et al. "Monosodium Glutamate Induces Cytotoxicity in Rat Liver Via Mitochondrial Permeability Transition Pore Opening." Cell Biochemistry and Biophysics, vol. 78, no. 4, 2020, pp. 429-437.
Olowofolahan AO, Adeosun OA, Olorunsogo OO. Monosodium Glutamate Induces Cytotoxicity in Rat Liver via Mitochondrial Permeability Transition Pore Opening. Cell Biochem Biophys. 2020;78(4):429-437.
Olowofolahan, A. O., Adeosun, O. A., & Olorunsogo, O. O. (2020). Monosodium Glutamate Induces Cytotoxicity in Rat Liver via Mitochondrial Permeability Transition Pore Opening. Cell Biochemistry and Biophysics, 78(4), 429-437. https://doi.org/10.1007/s12013-020-00944-z
Olowofolahan AO, Adeosun OA, Olorunsogo OO. Monosodium Glutamate Induces Cytotoxicity in Rat Liver Via Mitochondrial Permeability Transition Pore Opening. Cell Biochem Biophys. 2020;78(4):429-437. PubMed PMID: 32964329.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Monosodium Glutamate Induces Cytotoxicity in Rat Liver via Mitochondrial Permeability Transition Pore Opening. AU - Olowofolahan,Adeola Oluwakemi, AU - Adeosun,Oluwatobi Andrew, AU - Olorunsogo,Olufunso Olabode, Y1 - 2020/09/23/ PY - 2020/09/14/accepted PY - 2020/9/24/pubmed PY - 2021/5/20/medline PY - 2020/9/23/entrez KW - Apoptosis KW - Cancer KW - Mitochondrial membrane permeability transition pore KW - Monosodium glutamate SP - 429 EP - 437 JF - Cell biochemistry and biophysics JO - Cell Biochem Biophys VL - 78 IS - 4 N2 - Monosodium glutamate (MSG) is a major food additive used as a flavor enhancer. A lot of controversies have been generated over the use of MSG. The present study therefore investigated whether MSG would induce cytotoxicity via the induction of mitochondrial permeability transition (mPT) pore opening. 36 male albino rats were used for this study. The rats were equally divided into six groups: group I is the control while group II, III, IV, V, and VI were orally treated with MSG (25, 50, 100, 200, and 400 mg/kg) daily for 28 days. The opening of the pore, cytochrome c release, mitochondrial ATPase activity, mitochondrial lipid peroxidation and hepatic DNA fragmentation were determined spectrophotometrically. Histological assessment of prostate and brain was carried out. The results show that MSG at concentrations ≤30 µg/ml did not induce mPT pore opening while higher concentrations caused significant induction of pore opening. Also, at lower doses (25 and 50 mg/kg), MSG did not cause any significant induction of mPT pore opening while at higher doses, there were significant induction of pore opening. Similar trend of results was recorded for cytochrome c release, mitochondrial ATPase activity and lipid peroxidation. The histological results show that at low doses (25 and 50 mg/kg), no significant lesion was observed while higher doses caused benign prostatic hyperplasia (BPH) in the prostate and necrotic damage in the brain. MSG administration at low dose is tolerable while high doses induce cytotoxicity via mPT pore opening. SN - 1559-0283 UR - https://www.unboundmedicine.com/medline/citation/32964329/Monosodium_Glutamate_Induces_Cytotoxicity_in_Rat_Liver_via_Mitochondrial_Permeability_Transition_Pore_Opening_ L2 - https://dx.doi.org/10.1007/s12013-020-00944-z DB - PRIME DP - Unbound Medicine ER -