1
|
Umezu HL, Bittencourt-Silva PG, Mourão FAG, Moreira FA, Moraes MFD, Santos VR, da Silva GSF. Respiratory activity during seizures induced by pentylenetetrazole. Respir Physiol Neurobiol 2024; 323:104229. [PMID: 38307440 DOI: 10.1016/j.resp.2024.104229] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 01/27/2024] [Accepted: 01/29/2024] [Indexed: 02/04/2024]
Abstract
This study investigated the respiratory activity in adult Wistar rats across different behavioral seizure severity induced by pentylenetetrazole (PTZ). Animals underwent surgery for electrodes implantation, allowing simultaneous EEG and diaphragm EMG (DIAEMG) recordings and the respiratory frequency and DIAEMG amplitude were measured. Seizures were acutely induced through PTZ injection and classified based on a pre-established score, with absence-like seizures (spike wave discharge (SWD) events on EEG) representing the lowest score. The respiratory activity was grouped into the different seizure severities. During absence-like and myoclonic jerk seizures, the breathing frequency decreased significantly (∼50% decrease) compared to pre- and post-ictal periods. Pronounced changes occurred with more severe seizures (clonic and tonic) with periods of apnea, especially during tonic seizures. Apnea duration was significantly higher in tonic compared to clonic seizures. Notably, during PTZ-induced tonic seizures the apnea events were marked by tonic DIAEMG contraction (tonic-phase apnea). In the majority of animals (5 out of 7) this was a fatal event in which the seizure-induced respiratory arrest preceded the asystole. In conclusion, we provide an assessment of the respiratory activity in the PTZ-induced acute seizures and showed that breathing dysfunction is more pronounced in seizures with higher severity.
Collapse
Affiliation(s)
- Hanna L Umezu
- Department of Physiology and Biophysics, Institute of Biological Science, Federal University of Minas Gerais (ICB/UFMG), Belo Horizonte, Brazil
| | - Paloma G Bittencourt-Silva
- Department of Physiology and Biophysics, Institute of Biological Science, Federal University of Minas Gerais (ICB/UFMG), Belo Horizonte, Brazil
| | - Flávio A G Mourão
- Department of Physiology and Biophysics, Institute of Biological Science, Federal University of Minas Gerais (ICB/UFMG), Belo Horizonte, Brazil; Graduate Program in Neuroscience, Institute of Biological Science, Federal University of Minas Gerais (ICB/UFMG), Belo Horizonte, Brazil
| | - Fabrício A Moreira
- Department of Pharmacology, Institute of Biological Science, Federal University of Minas Gerais (ICB/UFMG), Belo Horizonte, Brazil
| | - Márcio Flávio D Moraes
- Department of Physiology and Biophysics, Institute of Biological Science, Federal University of Minas Gerais (ICB/UFMG), Belo Horizonte, Brazil; Graduate Program in Neuroscience, Institute of Biological Science, Federal University of Minas Gerais (ICB/UFMG), Belo Horizonte, Brazil
| | - Victor R Santos
- Department of Morphology, Institute of Biological Science, Federal University of Minas Gerais (ICB/UFMG), Belo Horizonte, Brazil
| | - Glauber S F da Silva
- Department of Physiology and Biophysics, Institute of Biological Science, Federal University of Minas Gerais (ICB/UFMG), Belo Horizonte, Brazil.
| |
Collapse
|
2
|
Pereira RDD, Rabelo RAN, Oliveira NFDM, Porto SLT, Andrade ACDSP, Queiroz-Junior CM, Barbosa CLN, de Souza-Costa LP, Santos FRDS, Oliveira FBR, da Silva BLV, Umezu HL, Ferreira R, da Silva GSF, Cruz JS, Teixeira MM, Costa VV, Machado FS. A 5-Lipoxygenase Inhibitor, Zileuton, Modulates Host Immune Responses and Improves Lung Function in a Model of Severe Acute Respiratory Syndrome (SARS) Induced by Betacoronavirus. Viruses 2023; 15:2049. [PMID: 37896826 PMCID: PMC10611395 DOI: 10.3390/v15102049] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 09/30/2023] [Accepted: 10/02/2023] [Indexed: 10/29/2023] Open
Abstract
Exacerbated inflammatory responses are a hallmark of severe coronavirus disease 2019 (COVID-19). Zileuton (Zi) is a selective inhibitor of 5-lipoxygenase, an enzyme involved in the production of several inflammatory/pro-resolving lipid mediators. Herein, we investigated the effect of Zi treatment in a severe acute respiratory syndrome (SARS) model. Mouse hepatitis virus (MHV)3-infected mice treated with Zi significantly improved the clinical score, weight loss, cardiopulmonary function, and survival rates compared with infected untreated animals. The protection observed in Zi-treated mice was associated with a lower inflammatory score, reduced dendritic cell-producing tumor necrosis factor (TNF), and increased neutrophil-producing interleukin (IL)-10 in the lungs three days after infection (dpi). At 5 dpi, the lungs of treated mice showed an increase in Th2-, Treg CD4+-, and Treg CD8+-producing IL-10 and reduced Th1 infiltrating cells. Furthermore, similar results were found upon Zi treatment after SARS-CoV-2 infection in transgenic mice expressing the human angiotensin I-converting enzyme 2 (ACE2) receptor driven by the cytokeratin-18 (K18) gene promoter (K18-hACE2), significantly improving the clinical score, weight loss, and lung inflammatory score compared with untreated animals. Our data suggest that Zi protects against developing severe lung disease during SARS induced by betacoronavirus without affecting the host's capacity to deal with infection.
Collapse
Affiliation(s)
- Rafaela das Dores Pereira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Rayane Aparecida Nonato Rabelo
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Natália Fernanda de Melo Oliveira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Samuel Luiz Teixeira Porto
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Ana Claudia dos Santos Pereira Andrade
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (A.C.d.S.P.A.); (C.M.Q.-J.); (B.L.V.d.S.)
| | - Celso M. Queiroz-Junior
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (A.C.d.S.P.A.); (C.M.Q.-J.); (B.L.V.d.S.)
| | - César Luís Nascimento Barbosa
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
- Program in Health Sciences: Infectious Diseases and Tropical Medicine, Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
| | - Luiz Pedro de Souza-Costa
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Felipe Rocha da Silva Santos
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Fernando Bento Rodrigues Oliveira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Bárbara Luísa Vieira da Silva
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (A.C.d.S.P.A.); (C.M.Q.-J.); (B.L.V.d.S.)
| | - Hanna L. Umezu
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (H.L.U.); (G.S.F.d.S.)
| | - Raquel Ferreira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Glauber S. F. da Silva
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (H.L.U.); (G.S.F.d.S.)
| | - Jader Santos Cruz
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Mauro Martins Teixeira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Vivian Vasconcelos Costa
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (A.C.d.S.P.A.); (C.M.Q.-J.); (B.L.V.d.S.)
| | - Fabiana Simão Machado
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
- Program in Health Sciences: Infectious Diseases and Tropical Medicine, Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
| |
Collapse
|