1
|
Vidicevic S, Tasic J, Stanojevic Z, Ciric D, Martinovic T, Paunovic V, Petricevic S, Tomonjic N, Isakovic A, Trajkovic V. Endoplasmic reticulum stress response in immune cells contributes to experimental autoimmune encephalomyelitis pathogenesis in rats. Immunol Lett 2024; 267:106855. [PMID: 38537720 DOI: 10.1016/j.imlet.2024.106855] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 11/28/2023] [Accepted: 03/23/2024] [Indexed: 04/01/2024]
Abstract
We examined the role of endoplasmic reticulum (ER) stress and the ensuing unfolded protein response (UPR) in the development of the central nervous system (CNS)-directed immune response in the rat model of experimental autoimmune encephalomyelitis (EAE). The induction of EAE with syngeneic spinal cord homogenate in complete Freund's adjuvant (CFA) caused a time-dependent increase in the expression of ER stress/UPR markers glucose-regulated protein 78 (GRP78), X-box-binding protein 1 (XBP1), C/EBP homologous protein (CHOP), and phosphorylated eukaryotic initiation factor 2α (eIF2α) in the draining lymph nodes of both EAE-susceptible Dark Agouti (DA) and EAE-resistant Albino Oxford (AO) rats. However, the increase in ER stress markers was more pronounced in AO rats. CFA alone also induced ER stress, but the effect was weaker and less sustained compared to full immunization. The ultrastructural analysis of DA lymph node tissue by electron microscopy revealed ER dilatation in lymphocytes, macrophages, and plasma cells, while immunoblot analysis of CD3-sorted lymph node cells demonstrated the increase in ER stress/UPR markers in both CD3+ (T cell) and CD3- (non-T) cell compartments. A positive correlation was observed between the levels of ER stress/UPR markers in the CNS-infiltrated mononuclear cells and the clinical activity of the disease. Finally, the reduction of EAE clinical signs by ER stress inhibitor ursodeoxycholic acid was associated with the decrease in the expression of mRNA encoding pro-inflammatory cytokines TNF and IL-1β, and encephalitogenic T cell cytokines IFN-γ and IL-17. Collectively, our data indicate that ER stress response in immune cells might be an important pathogenetic factor and a valid therapeutic target in the inflammatory damage of the CNS.
Collapse
Affiliation(s)
- Sasenka Vidicevic
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, 11000, Belgrade, Serbia
| | - Jelena Tasic
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, 11000, Belgrade, Serbia
| | - Zeljka Stanojevic
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, 11000, Belgrade, Serbia.
| | - Darko Ciric
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, 11000, Belgrade, Serbia
| | - Tamara Martinovic
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, 11000, Belgrade, Serbia
| | - Verica Paunovic
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, 11000, Belgrade, Serbia
| | - Sasa Petricevic
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, 11000, Belgrade, Serbia
| | - Nina Tomonjic
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, 11000, Belgrade, Serbia; Institute of Rheumatology, Faculty of Medicine, University of Belgrade, 11000, Belgrade, Serbia
| | - Aleksandra Isakovic
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, 11000, Belgrade, Serbia
| | - Vladimir Trajkovic
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, 11000, Belgrade, Serbia
| |
Collapse
|
2
|
Martinovic T, Vidicevic S, Ciric D, Bumbasirevic V, Stanojevic Z, Tasic J, Petricevic S, Isakovic A, Martinovic VC, Drndarevic N, Trajkovic V, Kravic-Stevovic T. The presence of Mott cells in the lymph nodes of rats with experimental autoimmune encephalomyelitis. Histochem Cell Biol 2024; 161:287-295. [PMID: 37952208 DOI: 10.1007/s00418-023-02252-y] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/25/2023] [Indexed: 11/14/2023]
Abstract
Mott cells are plasma cells that have multiple spherical Russell bodies packed in their cytoplasm. Russell bodies are dilated endoplasmic reticulum cisternae filled with aggregates of immunoglobulins that are neither secreted nor degraded. Mott cells were observed in our study by light and electron microscope in the lymph nodes of rats with experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis. Mott cells were detected on hematoxylin and eosin (HE)-stained lymph node sections as vacuolated cells with eccentrically positioned nuclei and large number of faint blue spherical inclusions in the cytoplasm. Electron microscopic investigation revealed the presence of Russell bodies of the "medusa" form inside Mott cells in lymph node ultra-thin sections of EAE animals. Mott cells expressed the plasma cell marker CD138 and either kappa or lambda immunoglobulin light chains, indicating their origin from polyclonally activated B cells. Finally, Mott cells were associated with active EAE, as they were not found in the lymph nodes of EAE-resistant Albino Oxford rats. The presence of Russell bodies implies an excessive production of immunoglobulins in EAE, thus further emphasizing the role of B cells, and among them Mott cells, in the pathogenesis of this animal model of multiple sclerosis.
Collapse
Affiliation(s)
- Tamara Martinovic
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Višegradska 26, 11000, Belgrade, Serbia
| | - Sasenka Vidicevic
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Darko Ciric
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Višegradska 26, 11000, Belgrade, Serbia.
| | - Vladimir Bumbasirevic
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Višegradska 26, 11000, Belgrade, Serbia
- Serbian Academy of Sciences and Arts, Belgrade, Serbia
| | - Zeljka Stanojevic
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Jelena Tasic
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Sasa Petricevic
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Aleksandra Isakovic
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | | | | | - Vladimir Trajkovic
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Tamara Kravic-Stevovic
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Višegradska 26, 11000, Belgrade, Serbia
| |
Collapse
|
3
|
Ciric D, Kravic-Stevovic T, Bumbasirevic V, Petricevic S, Jovanovic S, Trajkovic V, Martinovic T. Effects of metformin and simvastatin treatment on ultrastructural features of liver macrophages in HFD mice. Ultrastruct Pathol 2023; 47:1-11. [PMID: 36520527 DOI: 10.1080/01913123.2022.2156639] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Type 2 diabetes is a major health burden to the society. Macrophages and liver inflammation emerged as important factors in its development. We investigated ultrastructural changes in the liver, with a special emphasis on macrophages in high fat diet (HFD) fed C57BL/6 J mice treated with metformin or simvastatin, two drugs that are used frequently in diabetes. Both metformin and simvastatin reduced the liver damage in HFD fed animals, manifested as the prevention of nonalcoholic steatohepatitis development and reduced activation and number of macrophages in the liver, as well as the percentage of these cells with lipid droplets in the cytoplasm compared to untreated HFD animals. In contrast with untreated HFD-fed animals, lipid droplets were not observed in lysosomes of macrophages in HFD animals treated with metformin and simvastatin. These findings provide new insight into the effects of metformin and simvastatin on the liver in this experimental model of type 2 diabetes and provide further rationale for implementation of statins in the therapeutic regimens in this disease.
Collapse
Affiliation(s)
- Darko Ciric
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Tamara Kravic-Stevovic
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Vladimir Bumbasirevic
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Department of Medical Science Serbian Academy of Sciences and Arts, Belgrade, Serbia
| | - Sasa Petricevic
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Sofija Jovanovic
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Vladimir Trajkovic
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Tamara Martinovic
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| |
Collapse
|
4
|
Jeremic I, Petricevic S, Tadic V, Petrovic D, Tosic J, Stanojevic Z, Petronijevic M, Vidicevic S, Trajkovic V, Isakovic A. Effects of Sideritis scardica Extract on Glucose Tolerance, Triglyceride Levels and Markers of Oxidative Stress in Ovariectomized Rats. Planta Med 2019; 85:465-472. [PMID: 30690690 DOI: 10.1055/a-0835-6622] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Menopause is characterized by deep metabolic disturbances, including decreased insulin sensitivity, adiposity, and changes in lipid profiles. Estrogen replacement therapy can partially reverse these changes, and while it is safe in most healthy postmenopausal women, there are still existing concerns regarding an increased risk for breast and endometrial cancer as well as a risk for cardiovascular and thromboembolic disease. Therefore, certain natural compounds with positive metabolic effects may be considered as a possible alternative or adjunctive treatment in patients not willing to take estrogens or patients with contraindications for estrogens. The aim of this study was to investigate the influence of Sideritis scardica (mountain tea) extract on metabolic disturbances induced by ovariectomy in rats. The study included 24 rats divided into three groups: ovariectomized rats treated with 200 mg/kg S. scardica extract for 24 weeks (n = 8), ovariectomized non-treated (n = 8), and Sham-operated (n = 8) rats. Food intake, weight gain, body composition, fasting glucose levels, response to oral glucose challenge, liver glycogen content, catalase activity, thiol groups, and malondialdehyde concentrations as well as AMP-activated protein kinase activity in liver cells were studied. Ovariectomized rats treated with S. scardica extract had lower blood triglycerides, reduced fasting glucose levels, as well lower glucose peaks after oral glucose challenge, increased liver glycogen content, and significantly higher catalase activity and thiol group concentration than non-treated ovariectomized rats. The ability of S. scardica extract to attenuate metabolic disturbances associated with ovariectomy was associated with the activation of AMP-activated protein kinase in liver cells.
Collapse
Affiliation(s)
- Ivica Jeremic
- Institute of Rheumatology, School of Medicine, University of Belgrade, Belgrade, Serbia
- Institute of Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Sasa Petricevic
- Institute of Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Vanja Tadic
- Institute for Medicinal Plant Research, Dr Josif Pančić, Belgrade, Serbia
| | - Dragana Petrovic
- Institute of Rheumatology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Jelena Tosic
- Institute of Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Zeljka Stanojevic
- Institute of Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| | | | - Sasenka Vidicevic
- Institute of Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Vladimir Trajkovic
- Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Aleksandra Isakovic
- Institute of Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| |
Collapse
|
5
|
Ciric D, Martinovic T, Petricevic S, Trajkovic V, Bumbasirevic V, Kravic-Stevovic T. Metformin exacerbates and simvastatin attenuates myelin damage in high fat diet-fed C57BL/6 J mice. Neuropathology 2018; 38:468-474. [DOI: 10.1111/neup.12507] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 06/19/2018] [Accepted: 07/16/2018] [Indexed: 01/10/2023]
Affiliation(s)
- Darko Ciric
- Institute of Histology and Embryology, School of Medicine; University of Belgrade; Belgrade Serbia
| | - Tamara Martinovic
- Institute of Histology and Embryology, School of Medicine; University of Belgrade; Belgrade Serbia
| | | | - Vladimir Trajkovic
- Institute of Microbiology and Immunology, School of Medicine; University of Belgrade; Belgrade Serbia
| | - Vladimir Bumbasirevic
- Institute of Histology and Embryology, School of Medicine; University of Belgrade; Belgrade Serbia
| | - Tamara Kravic-Stevovic
- Institute of Histology and Embryology, School of Medicine; University of Belgrade; Belgrade Serbia
| |
Collapse
|
6
|
Kosic M, Arsikin-Csordas K, Paunovic V, Firestone RA, Ristic B, Mircic A, Petricevic S, Bosnjak M, Zogovic N, Mandic M, Bumbasirevic V, Trajkovic V, Harhaji-Trajkovic L. Synergistic Anticancer Action of Lysosomal Membrane Permeabilization and Glycolysis Inhibition. J Biol Chem 2016; 291:22936-22948. [PMID: 27587392 DOI: 10.1074/jbc.m116.752113] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Indexed: 12/21/2022] Open
Abstract
We investigated the in vitro and in vivo anticancer effect of combining lysosomal membrane permeabilization (LMP)-inducing agent N-dodecylimidazole (NDI) with glycolytic inhibitor 2-deoxy-d-glucose (2DG). NDI-triggered LMP and 2DG-mediated glycolysis block synergized in inducing rapid ATP depletion, mitochondrial damage, and reactive oxygen species production, eventually leading to necrotic death of U251 glioma cells but not primary astrocytes. NDI/2DG-induced death of glioma cells was partly prevented by lysosomal cathepsin inhibitor E64 and antioxidant α-tocopherol, suggesting the involvement of LMP and oxidative stress in the observed cytotoxicity. LMP-inducing agent chloroquine also displayed a synergistic anticancer effect with 2DG, whereas glucose deprivation or glycolytic inhibitors iodoacetate and sodium fluoride synergistically cooperated with NDI, thus further indicating that the anticancer effect of NDI/2DG combination was indeed due to LMP and glycolysis block. The two agents synergistically induced ATP depletion, mitochondrial depolarization, oxidative stress, and necrotic death also in B16 mouse melanoma cells. Moreover, the combined oral administration of NDI and 2DG reduced in vivo melanoma growth in C57BL/6 mice by inducing necrotic death of tumor cells, without causing liver, spleen, or kidney toxicity. Based on these results, we propose that NDI-triggered LMP causes initial mitochondrial damage that is further increased by 2DG due to the lack of glycolytic ATP required to maintain mitochondrial health. This leads to a positive feedback cycle of mitochondrial dysfunction, ATP loss, and reactive oxygen species production, culminating in necrotic cell death. Therefore, the combination of LMP-inducing agents and glycolysis inhibitors seems worthy of further exploration as an anticancer strategy.
Collapse
Affiliation(s)
- Milica Kosic
- From the Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Dr. Subotica 1, 11000 Belgrade, Serbia
| | - Katarina Arsikin-Csordas
- From the Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Dr. Subotica 1, 11000 Belgrade, Serbia
| | - Verica Paunovic
- From the Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Dr. Subotica 1, 11000 Belgrade, Serbia
| | - Raymond A Firestone
- From the Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Dr. Subotica 1, 11000 Belgrade, Serbia
| | - Biljana Ristic
- From the Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Dr. Subotica 1, 11000 Belgrade, Serbia
| | - Aleksandar Mircic
- the Institute of Histology and Embryology, School of Medicine, University of Belgrade, Visegradska 26, 11000 Belgrade, Serbia
| | - Sasa Petricevic
- the Institute of Biomedical Research, Galenika a.d., Pasterova 2, 11000 Belgrade, Serbia, and
| | - Mihajlo Bosnjak
- the Institute of Histology and Embryology, School of Medicine, University of Belgrade, Visegradska 26, 11000 Belgrade, Serbia
| | - Nevena Zogovic
- the Institute for Biological Research, University of Belgrade, Despot Stefan Blvd. 142, 11000 Belgrade, Serbia
| | - Milos Mandic
- From the Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Dr. Subotica 1, 11000 Belgrade, Serbia
| | - Vladimir Bumbasirevic
- the Institute of Histology and Embryology, School of Medicine, University of Belgrade, Visegradska 26, 11000 Belgrade, Serbia
| | - Vladimir Trajkovic
- From the Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Dr. Subotica 1, 11000 Belgrade, Serbia,
| | - Ljubica Harhaji-Trajkovic
- the Institute for Biological Research, University of Belgrade, Despot Stefan Blvd. 142, 11000 Belgrade, Serbia
| |
Collapse
|
7
|
Starcevic A, Petricevic S, Radojicic Z, Djulejic V, Ilankovic A, Starcevic B, Filipovic B. Glucocorticoid levels after exposure to predator odor and chronic psychosocial stress with dexamethasone application in rats. Kaohsiung J Med Sci 2016; 32:235-40. [PMID: 27316581 DOI: 10.1016/j.kjms.2016.04.011] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 04/20/2016] [Accepted: 04/21/2016] [Indexed: 10/21/2022] Open
Abstract
This study was conducted to explore the effects of specific psychosocial paradigm on predator animal posttraumatic stress model and to test the hypothesis that psychosocially stressed rats would exibit abnormal levels of cortisol and a larger suppression of cortisol levels after the application of dexamethasone. Animals were divided in two groups: experimental and control groups. The experimental group was exposed to two types of stressors: acute immobilization stress, and combined predator stress and daily social stress with application of dexamethasone. Blood sampling was performed at three different times. We found statistically significant results after analyzing the differences between cortisol levels in different times of blood sampling in the group of animals exposed to stress with dexamethasone application. Statistical significance was found when we compared the experimental group with the control group in terms of elevated cortisol levels during blood sampling after stress paradigm exposition. Many significant disruptions in the functioning of the hypothalamic-pituitary-adrenal axis were observed, such as decrease in basal cortisol levels and enhanced dexamethasone-induced inhibition of cortisol levels. These findings are important because their impact can translate to human individuals with posttraumatic stress disorder, which is the most important role of every animal model in research.
Collapse
Affiliation(s)
- Ana Starcevic
- Institute of Anatomy, Medical Faculty, University of Belgrade, Belgrade, Serbia.
| | - Sasa Petricevic
- Institute for Biochemistry, Medical Faculty, University of Belgrade, Belgrade, Serbia
| | - Zoran Radojicic
- Faculty for Organisational Sciences, University of Belgrade, Belgrade, Serbia
| | - Vuk Djulejic
- Institute of Anatomy, Medical Faculty, University of Belgrade, Belgrade, Serbia
| | - Andrej Ilankovic
- Psychiatry Clinic, Clinical Center of Serbia, University of Belgrade, Belgrade, Serbia
| | - Branislav Starcevic
- Orthopaedic Clinic, Clinical Center of Serbia, University of Belgrade, Belgrade, Serbia
| | - Branislav Filipovic
- Institute of Anatomy, Medical Faculty, University of Belgrade, Belgrade, Serbia
| |
Collapse
|
8
|
Vucicevic L, Misirkic-Marjanovic M, Paunovic V, Kravic-Stevovic T, Martinovic T, Ciric D, Maric N, Petricevic S, Harhaji-Trajkovic L, Bumbasirevic V, Trajkovic V. Autophagy inhibition uncovers the neurotoxic action of the antipsychotic drug olanzapine. Autophagy 2015; 10:2362-78. [PMID: 25551567 DOI: 10.4161/15548627.2014.984270] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
We investigated the role of autophagy, a controlled cellular self-digestion process, in regulating survival of neurons exposed to atypical antipsychotic olanzapine. Olanzapine induced autophagy in human SH-SY5Y neuronal cell line, as confirmed by the increase in autophagic flux and presence of autophagic vesicles, fusion of autophagosomes with lysosomes, and increase in the expression of autophagy-related (ATG) genes ATG4B, ATG5, and ATG7. The production of reactive oxygen species, but not modulation of the main autophagy repressor MTOR or its upstream regulators AMP-activated protein kinase and AKT1, was responsible for olanzapine-triggered autophagy. Olanzapine-mediated oxidative stress also induced mitochondrial depolarization and damage, and the autophagic clearance of dysfunctional mitochondria was confirmed by electron microscopy, colocalization of autophagosome-associated MAP1LC3B (LC3B henceforth) and mitochondria, and mitochondrial association with the autophagic cargo receptor SQSTM1/p62. While olanzapine-triggered mitochondrial damage was not overtly toxic to SH-SY5Y cells, their death was readily initiated upon the inhibition of autophagy with pharmacological inhibitors, RNA interference knockdown of BECN1 and LC3B, or biological free radical nitric oxide. The treatment of mice with olanzapine for 14 d increased the brain levels of autophagosome-associated LC3B-II and mRNA encoding Atg4b, Atg5, Atg7, Atg12, Gabarap, and Becn1. The administration of the autophagy inhibitor chloroquine significantly increased the expression of proapoptotic genes (Trp53, Bax, Bak1, Pmaip1, Bcl2l11, Cdkn1a, and Cdkn1b) and DNA fragmentation in the frontal brain region of olanzapine-exposed animals. These data indicate that olanzapine-triggered autophagy protects neurons from otherwise fatal mitochondrial damage, and that inhibition of autophagy might unmask the neurotoxic action of the drug.
Collapse
Key Words
- AKT1, v-akt murine thymoma viral oncogene homolog 1
- AMPK, AMP-activated protein kinase
- APAF1, apoptotic protease activating factor 1
- ATG, autophagy-related
- BAD, BCL2-associated agonist of cell death
- BAK1, BCL2-antagonist/killer 1
- BAX, BCL2-associated X protein
- BBC3, BCL2 binding component 3
- BCL2, B-cell CLL/lymphoma 2
- BCL2L1, BCL2-like 1
- BCL2L11, BCL2-like 11 (apoptosis facilitator)
- BECN1, Beclin 1, autophagy-related
- BIRC5, baculoviral IAP repeat containing 5
- CDKN1A, cyclin-dependent kinase inhibitor 1A (p21, Cip1)
- CDKN1B, cyclin-dependent kinase inhibitor 1B (p27, Kip1)
- CFLAR/FLIP, CASP8 and FADD-like apoptosis regulator
- COX4I1/COX IV, cytochrome c oxidase IV isoform 1
- DEA-NONOate, diethylamine NONOate
- DHR, dihydrorhodamine 123
- FOXO, forkhead box O
- GABARAP, GABA(A) receptor-associated protein
- LDH, lactate dehydrogenase
- MAP1LC3B, microtubule-associated protein 1 light chain 3 β
- MTOR, mechanistic target of rapamycin
- PAPA-NONOate, propylamine propylamine NONOate
- PMAIP1, phorbol-12-myristate-13-acetate-induced protein 1
- PTEN, phosphatase and tensin homolog
- ROS, reactive oxygen species
- RPS6KB1/S6K1, ribosomal protein S6 kinase, 70kDa, polypeptide 1
- SQSTM1
- SQSTM1/p62, sequestosome 1
- TRP53, transformation related protein 53 (mouse ortholog of human TP53, tumor protein p53)
- TUNEL, terminal deoxynucleotidyl transferase dUTP nick end labeling
- XIAP, X-linked inhibitor of apoptosis
- antipsychotic
- apoptosis
- autophagy
- mitophagy
- neurotoxicity
- nitric oxide, NO
- olanzapine
- oxidative stress
Collapse
Affiliation(s)
- Ljubica Vucicevic
- a Institute for Biological Research ; University of Belgrade ; Belgrade , Serbia
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Popovic M, Stanojevic Z, Tosic J, Isakovic A, Paunovic V, Petricevic S, Martinovic T, Ciric D, Kravic-Stevovic T, Soskic V, Kostic-Rajacic S, Shakib K, Bumbasirevic V, Trajkovic V. Neuroprotective arylpiperazine dopaminergic/serotonergic ligands suppress experimental autoimmune encephalomyelitis in rats. J Neurochem 2015; 135:125-38. [PMID: 26083644 DOI: 10.1111/jnc.13198] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 05/26/2015] [Accepted: 06/01/2015] [Indexed: 12/17/2022]
Abstract
Arylpiperazine-based dopaminergic/serotonergic ligands exert neuroprotective activity. We examined the effect of arylpiperazine D2 /5-HT1A ligands, N-{4-[2-(4-phenyl-piperazin-1-yl)-ethyl}-phenyl]-picolinamide (6a) and N-{3-[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-picolinamide (6b), in experimental autoimmune encephalomyelitis (EAE), a model of neuroinflammation. Both compounds (10 mg/kg i.p.) reduced EAE clinical signs in spinal cord homogenate-immunized Dark Agouti rats. Compound 6b was more efficient in delaying the disease onset and reducing the maximal clinical score, which correlated with its higher affinity for D2 and 5-HT1A receptors. The protection was retained if treatment was limited to the effector (from day 8 onwards), but not the induction phase (day 0-7) of EAE. Compound 6b reduced CNS immune infiltration and expression of mRNA encoding the proinflammatory cytokines tumor necrosis factor, IL-6, IL-1, and GM-CSF, TH 1 cytokine IFN-γ, TH 17 cytokine IL-17, as well as the signature transcription factors of TH 1 (T-bet) and TH 17 (RORγt) cells. Arylpiperazine treatment reduced apoptosis and increased the activation of anti-apoptotic mediators Akt and p70S6 kinase in the CNS of EAE animals. The in vitro treatment with 6b protected oligodendrocyte cell line OLN-93 and neuronal cell line PC12 from mitogen-activated normal T cells or myelin basic protein-activated encephalitogenic T cells. In conclusion, arylpiperazine dopaminergic/serotonergic ligands suppress EAE through a direct neuroprotective action and decrease in CNS inflammation. Arylpiperazine dopaminergic/serotonergic ligands reduce neurological symptoms of acute autoimmune encephalomyelitis in rats without affecting the activation of autoreactive immune response, through mechanisms involving a decrease in CNS immune infiltration, as well as direct protection of CNS from immune-mediated damage. These data indicate potential usefulness of arylpiperazine-based compounds in the treatment of neuroinflammatory disorders such as multiple sclerosis.
Collapse
Affiliation(s)
- Marjan Popovic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Zeljka Stanojevic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Jelena Tosic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Aleksandra Isakovic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Verica Paunovic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| | | | - Tamara Martinovic
- Institute of Histology and Embryology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Darko Ciric
- Institute of Histology and Embryology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Tamara Kravic-Stevovic
- Institute of Histology and Embryology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | | | | | - Kaveh Shakib
- Division of Surgery & Interventional Science, University College London (UCL), London, UK
| | - Vladimir Bumbasirevic
- Institute of Histology and Embryology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Vladimir Trajkovic
- Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Belgrade, Serbia
| |
Collapse
|
10
|
Jeremic I, Petrovic D, Zivkovic M, Petricevic S, Tadic V, Petronijevic M, Stanojevic Z, Trajkovic V, Sefik-Bukilica M, Gosic K, Isakovic A. AB0092 Sideritis Scardica Extract Prevents Bone Loss in Ovariectomized Rats. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.6184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
11
|
Starcevic A, Petricevic S, Djulejic V, Radojicic Z, Starcevic B, Filipovic B. Effects of Chronic Psychosocial Stress on Reduction of Basal Glucocorticoid Levels and Suppression of Glucocorticoid Levels Following Dexamethasone Administration in Animal Model of PTSD. Open Access Maced J Med Sci 2014. [DOI: 10.3889/oamjms.2014.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Aim: To further examine the neurobiological mechanisms and their outcomes responsible for the PTSD sequelae induced by laboratory animal model and to explore the effects of chronic psychosocial paradigm. We tested the hypothesis that our animal model of PTSD would display abnormalities in glucocorticoid levels that are manifest in people with PTSD and that psychosocially stressed rats exhibit a significantly greater suppression of corticosterone levels than control rats following the administration of dexamethasone.Methods: Animals were divided into two groups. The experimental group was scheduled to exposure to two types of stressors: double exposure to acute immobilization stress, and combined predator-threat stress and daily social stress. There was also administration of dexamethasone in combination with stress exposure.Results: There was a statistical difference between masses of thymus in the stress group and stress group with dexamethasone appliance (p=0.024). We found statistical significance between baseline cortisol and stress induced levels of cortisol and between stress induced group and return to baseline group.Conclusion: Significant changes in HPA activity, reductions in basal glucocorticoid levels and enhanced dexamethasone induced inhibition of glucocorticoid levels have been manifested. All of this is manifested in PTSD patients also as many other stress induces changes.
Collapse
|
12
|
Zavisic G, Petricevic S, Radulovic Z, Begovic J, Golic N, Topisirovic L, Strahinic I. Probiotic features of two oral Lactobacillus isolates. Braz J Microbiol 2012; 43:418-28. [PMID: 24031847 PMCID: PMC3768982 DOI: 10.1590/s1517-838220120001000050] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Revised: 05/24/2011] [Accepted: 08/15/2011] [Indexed: 01/11/2023] Open
Abstract
In this study, we checked lactobacilli strains of human origin for their potential as probiotic. Samples were collected from oral mucosa of 16 healthy individuals, out of which twenty isolates were obtained and two of them were selected and identified as Lactobacillus plantarum (G1) and L. casei (G3). Both isolates exhibited antagonistic action towards pathogenic microorganisms such as Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, Salmonella abony, and Clostridium sporogenes, but not on the growth of Candida albicans. The bacteriocin activity against Staphylococcus aureus ATCC 6358-P was shown only by L. plantarum G1. Moreover, the isolates G1 and G3 showed good viability in the acid gastric environment and in the gut environment containing bovine bile salts. The viability of G1 and G3 isolates in the gastrointestinal tract, and the adhesion to the intestinal mucosa were also confirmed in vivo. The biochemical tests of blood samples revealed lower levels of serum triglycerides and cholesterol, as well as reduced activity of alkaline phosphatase in all lactobacilli-treated Wistar rats, compared to control ones. No toxicity for NMRI Ham mice was observed. According to our experimental results, these findings imply that L. plantarum G1 and L. casei G3 could be characterized as potential probiotics.
Collapse
Affiliation(s)
- Gordana Zavisic
- Galenika a.d. Institute for R&D, Batajnički drum bb , 11080 Belgrade , Serbia
| | | | | | | | | | | | | |
Collapse
|
13
|
Zavisic G, Petricevic S, Radulovic Z, Begovic J, Golic N, Topisirovic L, Strahinic I. Probiotic features of two oral Lactobacillus isolates. Braz J Microbiol 2012. [DOI: 10.1590/s1517-83822012000100050] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
14
|
|