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Silveira FD, Gomes FIF, do Val DR, Freitas HC, de Assis EL, de Almeida DKC, Braz HLB, Barbosa FG, Mafezoli J, da Silva MR, Jorge RJB, Clemente-Napimoga JT, Costa DVDS, Brito GADC, Pinto VDPT, Cristino-Filho G, Bezerra MM, Chaves HV. Biological and Molecular Docking Evaluation of a Benzylisothiocyanate Semisynthetic Derivative From Moringa oleifera in a Pre-clinical Study of Temporomandibular Joint Pain. Front Neurosci 2022; 16:742239. [PMID: 35546897 PMCID: PMC9083263 DOI: 10.3389/fnins.2022.742239] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 03/14/2022] [Indexed: 11/18/2022] Open
Abstract
Objective Moringa oleifera possesses multiple biological effects and the 4-[(4′-O-acetyl-α-L- rhamnosyloxy) benzyl] isothiocyanate accounts for them. Based on the original isothiocyanate molecule we obtained a semisynthetic derivative, named 4-[(2′,3′,4′-O-triacetyl-α-L-rhamnosyloxy) N-benzyl] hydrazine carbothioamide (MC-H) which was safe and effective in a temporomandibular joint (TMJ) inflammatory hypernociception in rats. Therefore, considering that there is still a gap in the knowledge concerning the mechanisms of action through which the MC-H effects are mediated, this study aimed to investigate the involvement of the adhesion molecules (ICAM-1, CD55), the pathways heme oxygenase-1 (HO-1) and NO/cGMP/PKG/K+ATP, and the central opioid receptors in the efficacy of the MC-H in a pre-clinical study of TMJ pain. Methods Molecular docking studies were performed to test the binding performance of MC-H against the ten targets of interest (ICAM-1, CD55, HO-1, iNOS, soluble cGMP, cGMP-dependent protein kinase (PKG), K+ATP channel, mu (μ), kappa (κ), and delta (δ) opioid receptors). In in vivo studies, male Wistar rats were treated with MC-H 1 μg/kg before TMJ formalin injection and nociception was evaluated. Periarticular tissues were removed to assess ICAM-1 and CD55 protein levels by Western blotting. To investigate the role of HO-1 and NO/cGMP/PKG/K+ATP pathways, the inhibitors ZnPP-IX, aminoguanidine, ODQ, KT5823, or glibenclamide were used. To study the involvement of opioid receptors, rats were pre-treated (15 min) with an intrathecal injection of non-selective inhibitor naloxone or with CTOP, naltrindole, or norbinaltorphimine. Results All interactions presented acceptable binding energy values (below −6.0 kcal/mol) which suggest MC-H might strongly bind to its molecular targets. MC-H reduced the protein levels of ICAM-1 and CD55 in periarticular tissues. ZnPP-IX, naloxone, CTOP, and naltrindole reversed the antinociceptive effect of MC-H. Conclusion MC-H demonstrated antinociceptive and anti-inflammatory effects peripherally by the activation of the HO-1 pathway, as well as through inhibition of the protein levels of adhesion molecules, and centrally by μ and δ opioid receptors.
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Affiliation(s)
| | | | - Danielle Rocha do Val
- Graduate Programme in Biotechnology, North-Eastern Biotechnology Network, Federal University of Pernambuco, Recife, Brazil
| | | | | | | | - Helyson Lucas Bezerra Braz
- Graduate Program in Morphofunctional Sciences, Department of Morphology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | | | - Jair Mafezoli
- Graduate Programme in Chemistry, Science Center, Federal University of Ceará, Fortaleza, Brazil
| | | | - Roberta Jeane Bezerra Jorge
- Graduate Program in Morphofunctional Sciences, Department of Morphology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil.,Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, Brazil
| | | | - Deiziane Viana da Silva Costa
- Graduate Program in Morphofunctional Sciences, Department of Morphology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Gerly Anne de Castro Brito
- Graduate Program in Morphofunctional Sciences, Department of Morphology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Vicente de Paulo Teixeira Pinto
- Graduate Programme in Health Sciences, Federal University of Ceará, Sobral, Brazil.,Faculty of Medicine, Federal University of Ceará, Sobral, Brazil
| | - Gerardo Cristino-Filho
- Graduate Programme in Health Sciences, Federal University of Ceará, Sobral, Brazil.,Faculty of Medicine, Federal University of Ceará, Sobral, Brazil
| | - Mirna Marques Bezerra
- Graduate Programme in Health Sciences, Federal University of Ceará, Sobral, Brazil.,Faculty of Medicine, Federal University of Ceará, Sobral, Brazil
| | - Hellíada Vasconcelos Chaves
- Graduate Programme in Health Sciences, Federal University of Ceará, Sobral, Brazil.,Faculty of Dentistry, Federal University of Ceará, Sobral, Brazil.,Graduate Program in Dentistry, Federal University of Ceará, Fortaleza, Brazil
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Costa DVDS, Nunes RDM. Oral administration of eucalyptol reduces cell migration and pain-like behavior in zymosan-induced arthritis mice. BRAZ J PHARM SCI 2022. [DOI: 10.1590/s2175-97902022e21189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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de Brito TV, Júnior GJD, da Cruz Júnior JS, Silva RO, da Silva Monteiro CE, Franco AX, Vasconcelos DFP, de Oliveira JS, da Silva Costa DV, Carneiro TB, Gomes Duarte AS, de Souza MHLP, Soares PMG, Barbosa ALDR. Gabapentin attenuates intestinal inflammation: Role of PPAR-gamma receptor. Eur J Pharmacol 2020; 873:172974. [PMID: 32027888 DOI: 10.1016/j.ejphar.2020.172974] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [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: 09/12/2019] [Revised: 01/17/2020] [Accepted: 01/29/2020] [Indexed: 02/08/2023]
Abstract
Gabapentin is an anticonvulsant drug that is also used for post-herpetic neuralgia and neuropathic pain. Recently, gabapentin showed anti-inflammatory effect. Nuclear factor kappa B (NFκB) is a regulator of the inflammatory process, and Peroxisome Proliferator-activated Receptor gamma (PPAR-gamma) is an important receptor involved in NFκB regulation. The aim of the present work was to study the potential role of PPAR-gamma receptor in gabapentin-mediated anti-inflammatory effects in a colitis experimental model. We induced colitis in rats using trinitrobenzenosulfonic acid and treated them with gabapentin and bisphenol A dicyldidyl ether (PPAR-gamma inhibitor). Macroscopic lesion scores, wet weight, histopathological analysis, mast cell count, myeloperoxidase, malondialdehyde acid, glutathione, nitrate/nitrite, and interleukin levels in the intestinal mucosa were determined. In addition, western blots were performed to determine the expression of Cyclooxygenase-2 (COX-2) and NFκB; Nitric Oxide Inducible Synthase (iNOS) and Interleukin 1 beta (IL-1β) levels were also determined. Gabapentin was able to decrease all inflammatory parameters macroscopic and microscopic in addition to reducing markers of oxidative stress and cytokines such as IL-1β and Tumor Necrosis Factor alpha (TNF-α) as well as enzymes inducible nitric oxide synthase and cyclooxygenase 2 and inflammatory genic regulator (NFκB). These effect attributed to gabapentin was observed to be lost in the presence of the specific inhibitor of PPAR-gamma. Gabapentin inhibits bowel inflammation by regulating mast cell signaling. Furthermore, it activates the PPAR-gamma receptor, which in turn inhibits the activation of NFκB, and consequently results in reduced activation of inflammatory genes involved in inflammatory bowel diseases.
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Affiliation(s)
- Tarcisio Vieira de Brito
- LAFFEX - Laboratory of Experimental Physiopharmacology, Biotechnology and Biodiversity Center Research (BIOTEC), Federal University of Piauí, Parnaíba, 64202-020, PI, Brazil
| | - Genilson José Dias Júnior
- LAFFEX - Laboratory of Experimental Physiopharmacology, Biotechnology and Biodiversity Center Research (BIOTEC), Federal University of Piauí, Parnaíba, 64202-020, PI, Brazil
| | - José Simião da Cruz Júnior
- LAFFEX - Laboratory of Experimental Physiopharmacology, Biotechnology and Biodiversity Center Research (BIOTEC), Federal University of Piauí, Parnaíba, 64202-020, PI, Brazil
| | - Renan Oliveira Silva
- Department of Physiology and Pharmacology, Center of Biosciences, Federal University of Pernambuco, 50670-901, Recife, Pernambuco, Brazil
| | | | - Alvaro Xavier Franco
- LEFFAG - Laboratory of Physiopharmacology Study of Gastrointestinal Tract, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Daniel Fernando Pereira Vasconcelos
- LAPHIS - Laboratory of Analysis and Histological Processing, Department of Biomedicine, Federal University of Piauí, Parnaíba, 64202-020, PI, Brazil
| | - Jefferson Soares de Oliveira
- Laboratory of Biochemistry and Biology of Microorganisms and Plants (BIOMIC), Federal University of Piauí, Campus Minister Reis Velloso. Av. São Sebastião, 2819, CEP: 64202-020, Parnaíba, Piauí, Brazil
| | - Deiziane Viana da Silva Costa
- NEMPI - Nucleus of Study in Microscopy and Image Processing, Faculty of Medicine, Department of Morphology, Federal University of Ceará, Rua Delmiro de Farias, CEP: 60430270, Fortaleza, Ceará, Brazil
| | - Theides Batista Carneiro
- NEMPI - Nucleus of Study in Microscopy and Image Processing, Faculty of Medicine, Department of Morphology, Federal University of Ceará, Rua Delmiro de Farias, CEP: 60430270, Fortaleza, Ceará, Brazil
| | - Antoniella Souza Gomes Duarte
- NEMPI - Nucleus of Study in Microscopy and Image Processing, Faculty of Medicine, Department of Morphology, Federal University of Ceará, Rua Delmiro de Farias, CEP: 60430270, Fortaleza, Ceará, Brazil
| | | | - Pedro Marcos Gomes Soares
- LEFFAG - Laboratory of Physiopharmacology Study of Gastrointestinal Tract, Federal University of Ceará, Fortaleza, CE, Brazil
| | - André Luiz Dos Reis Barbosa
- LAFFEX - Laboratory of Experimental Physiopharmacology, Biotechnology and Biodiversity Center Research (BIOTEC), Federal University of Piauí, Parnaíba, 64202-020, PI, Brazil.
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Hyun Shin J, Viana da Silva Costa D, Parikh H, Barry KE, Mathers AJ, Warren C. 2429. Whole-genome Sequencing of Healthcare-Onset C. difficile Infection (HO-CDI) Cases Shows Widespread Presence of Antimicrobial Resistance Genes. Open Forum Infect Dis 2019. [PMCID: PMC6809836 DOI: 10.1093/ofid/ofz360.2107] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background Clostridioides difficile infection (CDI) is the most common pathogen to cause healthcare-associated infections. Unlike some other bacterial pathogens antimicrobial treatment is seldom based on culture with susceptibility testing with infrequent surveillance for antimicrobial resistance. We have evaluated healthcare-onset CDI (HO-CDI) for both transmission and antimicrobial resistance emergence. Methods We identified cases of HO-CDI diagnosed by PCR within a 3 month period (October 1/2018–December 31/2018) at University of Virginia Health System with overlapping stays in the same inpatient units with other HO-CDI. Chart review of all cases was performed. C. difficile was cultured from stool, then DNA was extracted and underwent sequencing on Illumina Miseq platform. Antimicrobial resistance genes were screened using NCBI’s AMRFinder tool from the de-novo assembled contigs using SPAdes. All the C. difficile isolates underwent antibiotic susceptibility testing. Results Eleven patients were identified with overlapping stays from 5 units. Mean age was 64 years and 63.6% were female. 36.3% of cases were severe CDI with one case of fulminant CDI. There was one recurrence within 90 days (9.1%). Patients were treated with PO vancomycin (72.7%) or IV metronidazole and PO vancomycin (27.3%), none were treated with metronidazole alone. None of the hospital strains were genetically related. There were two isolates with binary toxin gene (cdtB), one ribotype 027 (CD196) and one ribotype 078 (M120). Ninety-one percent of isolates had vanG-like gene cluster and vanZ1 originally identified in Enterococcus sp. erm(B), tet(M), and cfr(C) genes were also detected in several strains. All isolates were susceptible to vancomycin, metronidazole, and tigecycline. There was one strain with moxifloxacin resistance associated with the presence of erm(B) gene. None of the isolates were susceptible to clindamycin. Conclusion There were no widely circulating clones or direct transmissions found in this small sample of HO-CDI cases at our hospital. Like others have we demonstrate carriage of many vanG/Z genes without conferring phenotypic resistance to vancomycin. The origin and function of Van genes in C. difficile could be an area of future research. Disclosures All authors: No reported disclosures.
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Affiliation(s)
| | | | | | | | | | - Cirle Warren
- University of Virginia, Charlottesville, Virginia
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Mafra CADCC, Vasconcelos RC, de Medeiros CACX, Leitão RFDC, Brito GADC, Costa DVDS, Guerra GCB, de Araújo RF, Medeiros AC, de Araújo AA. Gliclazide Prevents 5-FU-Induced Oral Mucositis by Reducing Oxidative Stress, Inflammation, and P-Selectin Adhesion Molecules. Front Physiol 2019; 10:327. [PMID: 30971955 PMCID: PMC6445135 DOI: 10.3389/fphys.2019.00327] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 03/11/2019] [Indexed: 12/27/2022] Open
Abstract
Oral mucositis (OM) is one of the main side effects of the head and neck cancer treatment, particularly radiotherapy and/or chemotherapy. OM is characterized by ulcers, erythema, dysphagia, xerostomia, and increased susceptibility to opportunistic infections. In the perspective of finding pharmacological therapies to prevent inflammation and ulceration of OM, the investigation of the pleiotropic effect of commercial drugs is needed, among them gliclazide, an antidiabetic drug. This study aimed to evaluate the effect of gliclazide in an experimental OM model induced by 5-fluorouracil. Male hamsters were pre-treated with oral gliclazide (1, 5, or 10 mg/kg) for 10 days. Cheek pouch samples were subjected to histopathological and immunohistochemical analysis (COX2, iNOS, MMP-2, NFκB P65, GPx) and imunofluorescence (P-selectin). IL-1β and TNF-α levels, Myeloperoxidase activity (MPO) and malondialdehyde (MDA) levels were investigated by ultraviolet-visible spectroscopy analysis. NFκB NLS P50 protein levels were analyzed by western blotting. The group treated with gliclazide at a dose of 10 mg/kg showed presence of erythema, no evidence of erosion, and absence of mucosal ulceration with a score of 1 (1–2) (p < 0.01). Histopathological data for the group treated with gliclazide 10 mg/kg showed re-epithelialization, discrete mononuclear inflammatory infiltrate and absence of hemorrhage, edema, ulcers and abscesses with a score of 1 (1–1) (p < 0.01). Treatment with gliclazide 10 mg/kg reduced MPO activity (p < 0.001), MDA levels (p < 0.001) and NFκB NLS P50 (p < 0.05) protein levels, resulting in low immunostaining to Cox-2, iNOS (p < 0.05), NFκB P65 (p < 0.05), and negative immunoreaction to MMP-2 (p < 0.001). However, it appeared that for Gpx1, the staining was restored in the GLI 10-FUT group compared with 5FUT/saline (p < 0.05). Immunofluorescence revealed decreased levels of P-selectin (p < 0.001) after treatment with gliclazide 10 mg/kg (p < 0.05). In summary, gliclazide accelerated mucosal recovery and reduced oxidative stress and inflammation in the 5-FU-induced OM in hamsters.
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Affiliation(s)
| | | | - Caroline Addison Carvalho Xavier de Medeiros
- Department of Biophysics and Pharmacology, UFRN, Natal, Brazil.,Postgraduate Program in Biological Science and Rede Nordeste de Biotecnologia/Renorbio, Federal University of Rio Grande Norte, Natal, Brazil
| | - Renata Ferreira de Carvalho Leitão
- Postgraduate Programs in Pharmacology and Morphology, Department of Morphology/Pharmacology, Federal University of Ceará, Fortaleza, Brazil
| | - Gerly Anne de Castro Brito
- Postgraduate Programs in Pharmacology and Morphology, Department of Morphology/Pharmacology, Federal University of Ceará, Fortaleza, Brazil
| | - Deiziane Viana da Silva Costa
- Postgraduate Programs in Pharmacology and Morphology, Department of Morphology/Pharmacology, Federal University of Ceará, Fortaleza, Brazil
| | - Gerlane Coelho Bernardo Guerra
- Postgraduate Programs in Postgraduate Program in Biological Science/Pharmaceutical Science, Department of Biophysical and Pharmacology, UFRN, Natal, Brazil
| | - Raimundo Fernandes de Araújo
- Postgraduate Programs in Functional and Structural Biology and Health Science, Department of Morphology, UFRN, Natal, Brazil
| | - Aldo Cunha Medeiros
- Postgraduate Programs in Health Science, Department of Surgery, UFRN, Natal, Brazil
| | - Aurigena Antunes de Araújo
- Postgraduate Oral Science, Postgraduate Programs in Pharmaceutical Science, Department of Biophysics and Pharmacology, Federal University of Rio Grande Norte, Natal, Brazil
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Rodrigues FTS, de Souza MRM, Lima CNDC, da Silva FER, Costa DVDS, Dos Santos CC, Miyajima F, de Sousa FCF, Vasconcelos SMM, Barichello T, Quevedo J, Maes M, de Lucena DF, Macedo D. Major depression model induced by repeated and intermittent lipopolysaccharide administration: Long-lasting behavioral, neuroimmune and neuroprogressive alterations. J Psychiatr Res 2018; 107:57-67. [PMID: 30326340 DOI: 10.1016/j.jpsychires.2018.10.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 08/14/2018] [Accepted: 10/01/2018] [Indexed: 12/21/2022]
Abstract
Major depressed patients show increased bacterial translocation with elevated plasma levels of lipopolysaccharide (LPS), which may trigger immune-inflammatory and neuro-oxidative responses. Recently, an animal model based on chronic LPS administration was developed which was associated with long-lasting depressive-like and neuro-oxidative alterations in female mice. The aim of the current study was to investigate behavioral, neuroimmune and neuroprogressive alterations in female mice 6 weeks after LPS chronic exposure. Female mice received increasing doses of LPS during 5 days at one-month intervals repeated for 4 consecutive months. Six weeks after the last LPS-exposure, we assessed behavioral despair and anhedonia, microglial activation, alterations in tryptophan, 5-HT, kynurenine, quinolinic acid (QUIN) levels and spermidine/spermine N1-acetyltransferase (SAT1) expression in the hippocampus, both with and without fluoxetine administration. Our results show that six weeks post-LPS, mice present behavioral despair and anhedonia in association with increased IBA1 expression (a microglia activation marker), NF-kB p65 and IL-1β levels, indoleamine 2,3-dioxygenase (IDO1) mRNA expression, kynurenine, QUIN levels and QUIN/tryptophan ratio, and lowered tryptophan, 5-HT levels and SAT1 mRNA expression. Fluoxetine reversed the behavioral and neuroimmune alterations but had no effect in the reversal of IDO1 increased expression, QUIN levels and QUIN/tryptophan ratio. In conclusion, our results support the validity of the chronic LPS model of major depression and additionally shows its translational relevance with respect to neuroimmune and neuroprogressive pathways.
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Affiliation(s)
- Francisca Taciana Sousa Rodrigues
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Fortaleza, CE, Brazil.
| | - Marcos Romário Matos de Souza
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Fortaleza, CE, Brazil.
| | - Camila Nayane de Carvalho Lima
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Fortaleza, CE, Brazil.
| | - Francisco Eliclécio Rodrigues da Silva
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Fortaleza, CE, Brazil.
| | | | - Cláudio Costa Dos Santos
- Universidade Federal do Semiárido, Centro de Engenharias, Departamento de Engenharia e Tecnologia, Mossoró, RN, Brazil.
| | - Fábio Miyajima
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Fortaleza, CE, Brazil; Fundação Oswaldo Cruz - FIOCRUZ-CE, Fortaleza, Ceará, Brazil.
| | - Francisca Cléa F de Sousa
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - Silvânia Maria Mendes Vasconcelos
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Fortaleza, CE, Brazil.
| | - Tatiana Barichello
- Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, 1941 East Road, Houston, TX, 77054, USA; Laboratory of Neurosciences, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina-UNESC, Criciúma, SC, Brazil; Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA.
| | - João Quevedo
- Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, 1941 East Road, Houston, TX, 77054, USA; Laboratory of Neurosciences, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina-UNESC, Criciúma, SC, Brazil; Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA.
| | - Michael Maes
- Impact Strategic Research Center, Deakin University, Geelong, Australia; Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
| | - David F de Lucena
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Fortaleza, CE, Brazil.
| | - Danielle Macedo
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Fortaleza, CE, Brazil; National Institute for Translational Medicine (INCT-TM, CNPq), Ribeirão Preto, Brazil.
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Araújo AAD, Araújo LDS, Medeiros CACXD, Leitão RFDC, Brito GADC, Costa DVDS, Guerra GCB, Garcia VB, Lima MLDS, Araújo Junior RFD. Protective effect of angiotensin II receptor blocker against oxidative stress and inflammation in an oral mucositis experimental model. J Oral Pathol Med 2018; 47:972-984. [DOI: 10.1111/jop.12775] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/23/2018] [Accepted: 07/30/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Aurigena Antunes de Araújo
- Postgraduate Programs in Public Health and Pharmaceutical Science Department of Biophysics and Pharmacology Federal University of Rio Grande Norte Natal Brazil
| | | | - Caroline Addison Carvalho Xavier de Medeiros
- Department of Biophysics and Pharmacology UFRN Natal Brazil
- Postgraduate Program in Biological Science and Rede Nordeste de Biotecnologia/Renorbio Federal University of Rio Grande Norte Natal Brazil
| | | | - Gerly Anne de Castro Brito
- Postgraduate Programs in Pharmacology and Morphology Department of Morphology/Pharmacology Federal University of Ceará Fortaleza Brazil
| | | | - Gerlane Coelho Bernardo Guerra
- Postgraduate Programs in Postgraduate Program in Biological Science/Pharmaceutical Science Department of Biophysical and Pharmacology UFRN Natal Brazil
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de Carvalho TG, Garcia VB, de Araújo AA, da Silva Gasparotto LH, Silva H, Guerra GCB, de Castro Miguel E, de Carvalho Leitão RF, da Silva Costa DV, Cruz LJ, Chan AB, de Araújo Júnior RF. Spherical neutral gold nanoparticles improve anti-inflammatory response, oxidative stress and fibrosis in alcohol-methamphetamine-induced liver injury in rats. Int J Pharm 2018; 548:1-14. [DOI: 10.1016/j.ijpharm.2018.06.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 05/24/2018] [Accepted: 06/04/2018] [Indexed: 02/07/2023]
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Lucena JDD, Silveira HFD, De Paula LS, Ribeiro Junior HL, Costa Sobrinho OOPD, Leal KMB, Veríssimo NA, Pessoa RS, Scafuri AG, Barreto JEF, Cerqueira AJS, Gondim DV, Oliveira RCD, Costa DVDS, Cerqueira GS. The Irritating Effects Of Exposure To Formaldehyde In User Students Of The Human Anatomy Laboratory. Int Arch Med 2017. [DOI: 10.3823/2490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Formaldehyde (FA) is commonly used in cadaver fixation for years. FA vapors are released during the dissection process and macroscopic study of preserved anatomical pieces, raising their concentration in the Anatomy laboratory, causing greater exposure for students and teachers. Therefore, the objective of this study was to investigate toxic reactions in 37 students, through a questionnaire, produced by exposure to FA used for preservation of cadaveric material used in Anatomy, Morphofunctional Department, Faculdades Integradas de Patos (FIP), Brazil. Of the 37 interviewees, 26 (70.3%) were affected by the unpleasant and irritating smell of FA, 10 (27%) had no problems, and 1 (2.7%) did not tolerate an irritation produced by FA, not participating in the laboratory practical classes. Exposure to FA was followed by several symptoms: excessive lacrimation (54%), itchy eyes (48.5%), redness of the eyes (40.6%), coryza or congested nose (35.2%) and respiratory distress (29.7%), with persistent symptoms during the permanence in the laboratory for 32.5% of the students. All students wear a lab coat for individual protection. However, only 8% used mascara and did not wear glasses, increasing the risk of contamination. Medical schools should encourage the use of Personal Protective Equipment (PPE) for the manipulation of FA, ensuring the protection of students and teachers in the Anatomy laboratory. Besides finding alternatives for the replacement of FA in the conservation of corpses.
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