1
|
Marinowic DR, Zanirati GG, Azevedo PN, Zanatta Â, Plentz I, Alcará AM, Morrone FB, Scheffel TB, Cappellari AR, Roehe PM, Muterle Varela AP, Machado DC, Spillari Viola F, Da Costa JC. Influence of Zika virus on the cytotoxicity, cell adhesion, apoptosis and inflammatory markers of glioblastoma cells. Oncol Lett 2024; 27:176. [PMID: 38464338 PMCID: PMC10921266 DOI: 10.3892/ol.2024.14309] [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: 06/24/2022] [Accepted: 08/08/2023] [Indexed: 03/12/2024] Open
Abstract
Glioblastoma (GBM) is one of the most common types of brain tumor in adults. Despite the availability of treatments for this disease, GBM remains one of the most lethal and difficult types of tumors to treat, and thus, a majority of patients die within 2 years of diagnosis. Infection with Zika virus (ZIKV) inhibits cell proliferation and induces apoptosis, particularly in developing neuronal cells, and thus could potentially be considered an alternative for GBM treatment. In the present study, two GBM cell lines (U-138 and U-251) were infected with ZIKV at different multiplicities of infection (0.1, 0.01 and 0.001), and cell viability, migration, adhesion, induction of apoptosis, interleukin levels and CD14/CD73 cell surface marker expression were analyzed. The present study demonstrated that ZIKV infection promoted loss of cell viability and increased apoptosis in U-138 cells, as measured by MTT and triplex assay, respectively. Changes in cell migration, as determined by wound healing assay, were not observed; however, the GBM cell lines exhibited an increase in cell adhesion when compared with non-tumoral cells (Vero). The Luminex immunoassay showed a significant increase in the expression levels of IL-4 specifically in U-251 cells (MOI 0.001) following exposure to ZIKV. There was no significant change in the expression levels of IFN-γ upon ZIKV infection in the cell lines tested. Furthermore, a marked increase in the percentage of cells expressing the CD14 surface marker was observed in both GBM cell lines compared with in Vero cells; and significantly increased CD73 expression was observed particularly in U-251 cells, when compared with uninfected cells. These findings indicate that ZIKV infection could lead to reduced cell viability, elevated CD73 expression, improved cellular adherence, and higher rates of apoptosis in glioblastoma cells. Further studies are required to explore the potential use of ZIKV in the treatment of GBM.
Collapse
Affiliation(s)
- Daniel Rodrigo Marinowic
- Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
- Graduate Program in Medicine and Health Sciences, School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
| | - Gabriele Goulart Zanirati
- Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
- Graduate Program in Medicine, Pediatrics and Child Health, School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
| | - Pamella Nunes Azevedo
- Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
- Graduate Program in Medicine and Health Sciences, School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
| | - Ângela Zanatta
- Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
- Graduate Program in Medicine and Health Sciences, School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
| | - Ismael Plentz
- Graduate Program in Medicine, Pediatrics and Child Health, School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
| | - Allan Marinho Alcará
- Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
- Graduate Program in Medicine, Pediatrics and Child Health, School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
| | - Fernanda Bueno Morrone
- Graduate Program in Medicine and Health Sciences, School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
- Applied Pharmacology Laboratory, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
- Graduate Program in Molecular and Cellular Biology, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
| | - Thamiris Becker Scheffel
- Applied Pharmacology Laboratory, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
- Graduate Program in Molecular and Cellular Biology, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
| | - Angélica Regina Cappellari
- Applied Pharmacology Laboratory, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
- Graduate Program in Molecular and Cellular Biology, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
| | - Paulo Michel Roehe
- Laboratory of Virology, Department of Microbiology, Immunology and Parasitology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90040-060, Brazil
| | - Ana Paula Muterle Varela
- Laboratory of Virology, Department of Microbiology, Immunology and Parasitology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90040-060, Brazil
| | - Denise Cantarelli Machado
- Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
- Graduate Program in Medicine and Health Sciences, School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
| | - Fabiana Spillari Viola
- Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
- Graduate Program in Medicine and Health Sciences, School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
| | - Jaderson Costa Da Costa
- Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
- Graduate Program in Medicine and Health Sciences, School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
- Graduate Program in Medicine, Pediatrics and Child Health, School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
| |
Collapse
|
2
|
Silva MP, Rodrigues CG, Machado DC, Nogueira RA. Long-term memory in Staphylococcus aureus α-hemolysin ion channel kinetics. Eur Biophys J 2023; 52:661-671. [PMID: 37542583 DOI: 10.1007/s00249-023-01675-8] [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] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/03/2023] [Accepted: 07/20/2023] [Indexed: 08/07/2023]
Abstract
The kinetics of an ion channel are classically understood as a random process. However, studies have shown that in complex ion channels, formed by multiple subunits, this process can be deterministic, presenting long-term memory. Staphylococcus aureus α-hemolysin (α-HL) is a toxin that acts as the major factor in Staphylococcus aureus virulence. α-HL is a water-soluble protein capable of forming ion channels into lipid bilayers, by insertion of an amphipathic β-barrel. Here, the α-HL was used as an experimental model to study memory in ion channel kinetics. We applied the approximate entropy (ApEn) approach to analyze randomness and the Detrended Fluctuation Analysis (DFA) to investigate the existence of long memory in α-HL channel kinetics. Single-channel currents were measured through experiments with α-HL channels incorporated in planar lipid bilayers. All experiments were carried out under the following conditions: 1 M NaCl solution, pH 4.5; transmembrane potential of + 40 mV and temperature 25 ± 1 °C. Single-channel currents were recorded in real-time in the memory of a microcomputer coupled to an A/D converter and a patch-clamp amplifier. The conductance value of the α-HL channels was 0.82 ± 0.0025 nS (n = 128). The DFA analysis showed that the kinetics of α-HL channels presents long-term memory ([Formula: see text] = 0.63 ± 0.04). The ApEn outcomes showed low complexity to dwell times when open (ApEno = 0.5514 ± 0.28) and closed (ApEnc = 0.1145 ± 0.08), corroborating the results of the DFA method.
Collapse
Affiliation(s)
- M P Silva
- Department of Animal Morphology and Physiology, Federal Rural University of Pernambuco, Recife, Pernambuco, Brazil
| | - C G Rodrigues
- Department of Biophysics and Radiobiology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - D C Machado
- Department of Biophysics and Radiobiology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - R A Nogueira
- Department of Animal Morphology and Physiology, Federal Rural University of Pernambuco, Recife, Pernambuco, Brazil.
| |
Collapse
|
3
|
Costa-Ferro ZSM, do Prado-Lima PAS, Onsten GA, Oliveira GN, Brito GC, Ghilardi IM, Dos Santos PG, Bertinatto RJ, da Silva DV, Salamoni SD, Machado DC, da Cruz IBM, de Freitas Souza BS, da Costa JC. Bone marrow mononuclear cell transplant prevents rat depression and modulates inflammatory and neurogenic molecules. Prog Neuropsychopharmacol Biol Psychiatry 2022; 113:110455. [PMID: 34637870 DOI: 10.1016/j.pnpbp.2021.110455] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 09/24/2021] [Accepted: 10/06/2021] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Major depressive disorder is associated with chronic inflammation and deficient production of brain-derived neurotrophic factor (BDNF). Bone marrow mononuclear cell (BMMC) transplantation has an anti-inflammatory effect and has been proven effective in restoring non-depressive behavior. This study investigated whether BMMC transplantation can prevent the development of depression or anxiety in chronic mild stress (CMS), as well as its effect on inflammatory and neurogenic molecules. METHOD Three groups of animals were compared: BMMC-transplanted animals subjected to CMS for 45 days, CMS non-transplanted rats, and control animals. After the CMS period, the three groups underwent the following behavioral tests: sucrose preference test (SPT), eating-related depression test (ERDT), social avoidance test (SAT), social interaction test (SIT), and elevated plus maze test (EPMT). Transplanted cell tracking and measurement of the expression of high-mobility group box 1 (HMGB1), interleukin-1β (IL-1β), tumor necrosis factor (TNFα), and BDNF were performed on brain and spleen tissues. RESULTS BMMC transplantation prevented the effects of CMS in the SPT, ERDT, SAT, and SIT, while prevention was less pronounced in the EPMT. It was found to prevent increased HMGB-1 expression induced by CMS in the hippocampus and spleen, increase BDNF expression in both tissues, and prevent increased IL-1β expression in the hippocampus alone, while no effect of the transplant was observed in the TNFα expression. In addition, no transplanted cells were found in either the brain or spleen. CONCLUSIONS BMMC transplantation prevents the development of depression and anxiety-like behavior triggered by CMS. It could prevent increased HMGB-1 and IL-1β expression in the hippocampus and increased BDNF expression in the same tissue. Cell treatment represents a further perspective in the research and treatment of depression and possible mood disorders.
Collapse
Affiliation(s)
| | | | - Guilherme Ary Onsten
- Brain Institute (BraIns), Pontificia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Gutierre Neves Oliveira
- Brain Institute (BraIns), Pontificia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Guilherme Camargo Brito
- Brain Institute (BraIns), Pontificia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Isadora Machado Ghilardi
- Brain Institute (BraIns), Pontificia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Paula Gabrielli Dos Santos
- Brain Institute (BraIns), Pontificia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Ricardo Jean Bertinatto
- Brain Institute (BraIns), Pontificia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Daniele Vieira da Silva
- Brain Institute (BraIns), Pontificia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Simone Denise Salamoni
- Brain Institute (BraIns), Pontificia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Denise Cantarelli Machado
- Brain Institute (BraIns), Pontificia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | | | - Bruno Solano de Freitas Souza
- Center for Biotechnology and Cell Therapy, São Rafael Hospital, Bahia, Brazil; D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil; Gonçalo Moniz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Bahia, Brazil
| | - Jaderson Costa da Costa
- Brain Institute (BraIns), Pontificia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
| |
Collapse
|
4
|
Dos Santos Fagundes I, Brendler EP, Nunes Erthal I, Eder Ribeiro RJ, Caron-Lienert RS, Machado DC, Pinheiro da Costa BE, Poli-de-Figueiredo CE. Total Th1/Th2 cytokines profile from peripheral blood lymphocytes in normal pregnancy and preeclampsia syndrome. Hypertens Pregnancy 2021; 41:15-22. [PMID: 34812111 DOI: 10.1080/10641955.2021.2008424] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
To evaluate total Th1/Th2 cytokines in CD3+ cells (immunocompetent T-lymphocytes) and peripheral blood lymphocytes, mostly CD4+ (T helper cells) and CD8+ (T-cytotoxic cells) subpopulations in preeclampsia. Total blood leukocytes and lymphocytes counts, percent cells: CD3+, INF-g+/CD3+, IL-4+/CD3+, and IL-10+/CD3+, CD4+/CD8+ were determined by flow-cytometry. Preeclampsia (n= 26) and normal pregnancy (n= 25) participants were age and gestational age matched. CD4+ lymphocytes count was higher in preeclampsia, compared with normal pregnancy (43.6 ± 5.8 vs 37.6 ± 5.6%; P< 0.001). CD3+ cells Th1/Th2 shift was not detected in preeclampsia, yet may be present in other cell types, such as CD4+ and CD3 - lymphocytes.
Collapse
Affiliation(s)
- Iara Dos Santos Fagundes
- Serviço de Imunologia Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande Do Sul, Porto Alegre, Brazil
| | - Eduardo Pletsch Brendler
- School of Medicine, Pontifical Catholic University of Rio Grande Do Sul, Pucrs, Porto Alegre, Brazil
| | - Isadora Nunes Erthal
- School of Medicine, Pontifical Catholic University of Rio Grande Do Sul, Pucrs, Porto Alegre, Brazil
| | | | | | - Denise Cantarelli Machado
- School of Medicine, Pontifical Catholic University of Rio Grande Do Sul, Pucrs, Porto Alegre, Brazil
| | | | | |
Collapse
|
5
|
Jak B, Zanirati G, Rodrigues FVF, Grahl M, Krimberg F, Pinzetta G, Borém L, Savi D, Machado DC, Da Costa JC, Marinowic DR. Case Report: Placental Maternal Vascular Malperfusion Affecting Late Fetal Development and Multiorgan Infection Caused by SARS-CoV-2 in Patient With PAI-1 4G/5G Polymorphism. Front Med (Lausanne) 2021; 8:624166. [PMID: 33681253 PMCID: PMC7928274 DOI: 10.3389/fmed.2021.624166] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 10/30/2020] [Accepted: 01/13/2021] [Indexed: 01/27/2023] Open
Abstract
Background: Pregnant women are susceptible to the novel coronavirus (SARS-CoV-2), and the consequences for the fetus are still uncertain. Here, we present a case of a pregnant woman with subclinical hypothyroidism and a plasminogen activator inhibitor type 1 (PAI-1) 4G/5G polymorphism who was infected with SARS-CoV-2 at the end of the third trimester of pregnancy, with unexpected evolution of death of the newborn 4 days postpartum. Methods: Nested PCR was performed to detect the virus, followed by ssDNA sequencing. Results: Transplacental transmission of SARS-CoV-2 can cause placental inflammation, ischemia, and neonatal viremia, with complications such as preterm labor and damage to the placental barrier in patients with PAI-1 4G/5G polymorphism. Conclusion: We showed a newborn with several damages potentially caused due to the PAI-1 polymorphisms carried by the mother infected with SARS-CoV-2 during pregnancy.
Collapse
Affiliation(s)
- Behling Jak
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,Graduate Program in Medicine and Health Sciences, Medical School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Gabriele Zanirati
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,Graduate Program in Medicine, Pediatrics and Child Health, Medical School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Felipe V F Rodrigues
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,Graduate Program in Medicine, Pediatrics and Child Health, Medical School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Matheus Grahl
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,Graduate Program in Medicine and Health Sciences, Medical School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Felipe Krimberg
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Giulia Pinzetta
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Larissa Borém
- Graduate Program in Health Woman, Medical School, Federal University of Minas Gerais, Horizonte, Brazil
| | - Daniela Savi
- Medical Pathologist, Virchow Laboratory, Belo Horizonte, Brazil
| | - Denise Cantarelli Machado
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,Graduate Program in Medicine and Health Sciences, Medical School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,Graduate Program in Biomedical Gerontology, Medical School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Jaderson Costa Da Costa
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,Graduate Program in Medicine and Health Sciences, Medical School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,Graduate Program in Medicine, Pediatrics and Child Health, Medical School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Daniel Rodrigo Marinowic
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,Graduate Program in Medicine and Health Sciences, Medical School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,Graduate Program in Medicine, Pediatrics and Child Health, Medical School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,Graduate Program in Biomedical Gerontology, Medical School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| |
Collapse
|
6
|
Marinowic DR, Zanirati G, Rodrigues FVF, Grahl MVC, Alcará AM, Machado DC, Da Costa JC. A new SYBR Green real-time PCR to detect SARS-CoV-2. Sci Rep 2021; 11:2224. [PMID: 33500453 PMCID: PMC7838253 DOI: 10.1038/s41598-021-81245-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 12/30/2020] [Indexed: 01/10/2023] Open
Abstract
Phylogenetic analysis has demonstrated that the etiologic agent of the 2020 pandemic outbreak is a betacoronavirus named SARS-CoV-2. For public health interventions, a diagnostic test with high sensitivity and specificity is required. The gold standard protocol for diagnosis by the Word Health Organization (WHO) is RT-PCR. To detect low viral loads and perform large-scale screening, a low-cost diagnostic test is necessary. Here, we developed a cost-effective test capable of detecting SARS-CoV-2. We validated an auxiliary protocol for molecular diagnosis with the SYBR Green RT-PCR methodology to successfully screen negative cases of SARS-CoV-2. Our results revealed a set of primers with high specificity and no homology with other viruses from the Coronovideae family or human respiratory tract pathogenic viruses, presenting with complementarity only for rhinoviruses/enteroviruses and Legionella spp. Optimization of the annealing temperature and polymerization time led to a high specificity in the PCR products. We have developed a more affordable and swift methodology for negative SARS-CoV-2 screening. This methodology can be applied on a large scale to soften panic and economic burden through guidance for isolation strategies.
Collapse
Affiliation(s)
- D R Marinowic
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Av Ipiranga, 6690, Building 63, Jardim Botânico, Porto Alegre, Rio Grande do Sul, 90610.000, Brazil.,Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,Graduate Program in Medicine, Pediatrics and Child Health, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,Graduate Program in Biomedical Gerontology, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - G Zanirati
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Av Ipiranga, 6690, Building 63, Jardim Botânico, Porto Alegre, Rio Grande do Sul, 90610.000, Brazil.,Graduate Program in Medicine, Pediatrics and Child Health, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - F V F Rodrigues
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Av Ipiranga, 6690, Building 63, Jardim Botânico, Porto Alegre, Rio Grande do Sul, 90610.000, Brazil.,Graduate Program in Medicine, Pediatrics and Child Health, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - M V C Grahl
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Av Ipiranga, 6690, Building 63, Jardim Botânico, Porto Alegre, Rio Grande do Sul, 90610.000, Brazil.,Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - A M Alcará
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Av Ipiranga, 6690, Building 63, Jardim Botânico, Porto Alegre, Rio Grande do Sul, 90610.000, Brazil.,Graduate Program in Medicine, Pediatrics and Child Health, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - D C Machado
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Av Ipiranga, 6690, Building 63, Jardim Botânico, Porto Alegre, Rio Grande do Sul, 90610.000, Brazil.,Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,Graduate Program in Biomedical Gerontology, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - J C Da Costa
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Av Ipiranga, 6690, Building 63, Jardim Botânico, Porto Alegre, Rio Grande do Sul, 90610.000, Brazil. .,Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil. .,Graduate Program in Medicine, Pediatrics and Child Health, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil. .,School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
| |
Collapse
|
7
|
Gonçalves MVM, Brandão WN, Longo C, Peron JPS, Dos Passos GR, Pagliarini GL, do Nascimento OJM, Marinowic DR, Machado DC, Becker J. Correlation between IL-31 and sCD40L plasma levels in Fingolimod-treated patients with Relapsing-Remitting Multiple Sclerosis (RRMS). J Neuroimmunol 2020; 350:577435. [PMID: 33189062 DOI: 10.1016/j.jneuroim.2020.577435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 07/16/2020] [Revised: 10/12/2020] [Accepted: 11/02/2020] [Indexed: 12/01/2022]
Abstract
INTRODUCTION Multiple Sclerosis (MS) is a chronic, autoimmune, demyelinating disease of the central nervous system (CNS). Currently, several protocols are described for the different phases of MS. In this longitudinal study, we aim to quantify the concentration of plasma cytokines of MS patients treated with Fingolimod alone or after Glatiramer Acetate (GA) or Interferon-beta (IFN-β), in order to compeer both treatments and describes if it is possible to use them as biomarkers. OBJECTIVE Compare the two different types of drug treatment and describes possible immune biomarkers in RRMS patients treated with Fingolimod alone or after GA or IFN-β. MATERIALS AND METHODS This is a controlled, non-randomized clinical trial. Plasma concentrations of IL-31, sCD40L and nine others cytokines were evaluated in two groups of patients with a one-year follow-up. Group 1 (n = 12): RRMS patients treated with GA or IFN-β for at least six months before the study who changed therapy to Fingolimod after six months, and Group 2 (n = 12): naïve RRMS patients who started treatment with Fingolimod. We used ANOVA two-way to analyze the cytokines and Spearman coefficient to evaluate the correlation. RESULTS Although Group 2 started with a greater number of relapses per disease duration, Fingolimod treatment was effective in decreasing this parameter, as well as EDSS over 12 months. However, the treatment with GA or IFN-β on Group 1 showed a tendency to increase the number of relapses after 6 months of follow-up, which decrease when the therapy was changed to Fingolimod. After the evaluation of 11 cytokines in one year, we found that IL-31 and sCD40L were the biomarkers that demonstrated a more difference when compared to the classical ones, following the clinical pattern over the treatment period. CONCLUSIONS Our study describes the existence of two promising plasmatic biomarkers (IL-31 and sCD40L), which reduced plasmatic levels in RRMS patients followed the treatment time of Fingolimod, despite that more studies are needed to prove their efficiency.
Collapse
Affiliation(s)
| | - Wesley Nogueira Brandão
- Department of Immunology, Institute of Biological Sciences, Universidade de São Paulo (ICB-USP), São Paulo, Brazil
| | - Carla Longo
- Department of Immunology, Institute of Biological Sciences, Universidade de São Paulo (ICB-USP), São Paulo, Brazil
| | - Jean Pierre Schatzmann Peron
- Department of Immunology, Institute of Biological Sciences, Universidade de São Paulo (ICB-USP), São Paulo, Brazil
| | | | - Gabriela Löw Pagliarini
- School of Medicine, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | | | - Daniel Rodrigo Marinowic
- Cellular and Molecular Biology and Neuroimmunology Lab, Brain Institute of Rio Grande do Sul (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Denise Cantarelli Machado
- Cellular and Molecular Biology and Neuroimmunology Lab, Brain Institute of Rio Grande do Sul (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Jefferson Becker
- Department of Neurology, Universidade Federal Fluminense (UFF), Niterói, Brazil; School of Medicine, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil; Neuroimmunology Program, Brain Institute of Rio Grande do Sul (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| |
Collapse
|
8
|
Costa-Ferro ZSM, de Oliveira GN, da Silva DV, Marinowic DR, Machado DC, Longo BM, da Costa JC. Intravenous infusion of bone marrow mononuclear cells promotes functional recovery and improves impaired cognitive function via inhibition of Rho guanine nucleotide triphosphatases and inflammatory signals in a model of chronic epilepsy. Brain Struct Funct 2020; 225:2799-2813. [PMID: 33128125 DOI: 10.1007/s00429-020-02159-7] [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: 09/18/2019] [Accepted: 10/15/2020] [Indexed: 11/24/2022]
Abstract
Temporal lobe epilepsy is the most common form of intractable epilepsy in adults. More than 30% of individuals with epilepsy have persistent seizures and have drug-resistant epilepsy. Based on our previous findings, treatment with bone marrow mononuclear cells (BMMC) could interfere with early and chronic phase epilepsy in rats and in clinical settings. In this pilocarpine-induced epilepsy model, animals were randomly assigned to two groups: control (Con) and epileptic pre-treatment (Ep-pre-t). The latter had status epilepticus (SE) induced through pilocarpine intraperitoneal injection. Later, seizure frequency was assessed using a video-monitoring system. Ep-pre-t was further divided into epileptic treated with saline (Ep-Veh) and epileptic treated with BMMC (Ep-BMMC) after an intravenous treatment with BMMC was done on day 22 after SE. Analysis of neurobehavioral parameters revealed that Ep-BMMC had significantly lower frequency of spontaneous recurrent seizures (SRS) in comparison to Ep-pre-t and Ep-Veh groups. Hippocampus-dependent spatial and non-spatial learning and memory were markedly impaired in epileptic rats, a deficit that was robustly recovered by treatment with BMMC. Moreover, long-term potentiation-induced synaptic remodeling present in epileptic rats was restored by BMMC. In addition, BMMC was able to reduce abnormal mossy fiber sprouting in the dentate gyrus. Molecular analysis in hippocampal tissue revealed that BMMC treatment down-regulates the release of inflammatory cytokine tumor necrosis factor-α (TNF-α) and Allograft inflammatory factor-1 (AIF-1) as well as the Rho subfamily of small GTPases [Ras homolog gene family member A (RhoA) and Ras-related C3 botulinum toxin substrate 1 (Rac)]. Collectively, delayed BMMC treatment showed positive effects when intravenously infused into chronic epileptic rats.
Collapse
Affiliation(s)
- Zaquer Suzana Munhoz Costa-Ferro
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Gutierre Neves de Oliveira
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Daniele Vieira da Silva
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Daniel Rodrigo Marinowic
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Denise Cantarelli Machado
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Beatriz Monteiro Longo
- Laboratory of Neurophysiology, Department of Physiology, Universidade Federal de São Paulo, UNIFESP, São Paulo, SP, Brazil
| | - Jaderson Costa da Costa
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil.
| |
Collapse
|
9
|
da Silva APB, Silva RBM, Goi LDS, Molina RD, Machado DC, Sato DK. Experimental Models of Neuroimmunological Disorders: A Review. Front Neurol 2020; 11:389. [PMID: 32477252 PMCID: PMC7235321 DOI: 10.3389/fneur.2020.00389] [Citation(s) in RCA: 5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 04/17/2020] [Indexed: 12/11/2022] Open
Abstract
Immune-mediated inflammatory diseases of the central nervous system (CNS) are a group of neurological disorders in which inflammation and/or demyelination are induced by cellular and humoral immune responses specific to CNS antigens. They include diseases such as multiple sclerosis (MS), neuromyelitis optica spectrum disorders (NMOSD), acute disseminated encephalomyelitis (ADEM) and anti-NMDA receptor encephalitis (NMDAR encephalitis). Over the years, many in vivo and in vitro models were used to study clinical, pathological, physiological and immunological features of these neuroimmunological disorders. Nevertheless, there are important aspects of human diseases that are not fully reproduced in the experimental models due to their technical limitations. In this review, we describe the preclinical models of neuroimmune disorders, and how they contributed to the understanding of these disorders and explore potential treatments. We also describe the purpose and limitation of each one, as well as the recent advances in this field.
Collapse
Affiliation(s)
- Ana Paula Bornes da Silva
- Neuroinflammation and Neuroimmunology Laboratory, Brain Institute, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), Porto Alegre, Brazil.,School of Medicine, Graduate Program in Pediatrics and Child Health, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), Porto Alegre, Brazil
| | - Rodrigo Braccini Madeira Silva
- Research Center in Toxicology and Pharmacology, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), Porto Alegre, Brazil
| | - Leise Daniele Sckenal Goi
- Neuroinflammation and Neuroimmunology Laboratory, Brain Institute, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), Porto Alegre, Brazil.,School of Medicine, Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), Porto Alegre, Brazil
| | - Rachel Dias Molina
- Neuroinflammation and Neuroimmunology Laboratory, Brain Institute, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), Porto Alegre, Brazil.,School of Medicine, Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), Porto Alegre, Brazil
| | - Denise Cantarelli Machado
- School of Medicine, Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), Porto Alegre, Brazil.,Molecular and Cellular Biology Laboratory, Brain Institute, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), Porto Alegre, Brazil
| | - Douglas Kazutoshi Sato
- Neuroinflammation and Neuroimmunology Laboratory, Brain Institute, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), Porto Alegre, Brazil.,School of Medicine, Graduate Program in Pediatrics and Child Health, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), Porto Alegre, Brazil.,School of Medicine, Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), Porto Alegre, Brazil
| |
Collapse
|
10
|
Marinowic DR, Majolo F, Zanirati GG, Plentz I, Neto EP, Palmini ALF, Machado DC, Da Costa JC. Analysis of genes involved in cell proliferation, adhesion, and control of apoptosis during embryonic neurogenesis in Induced Pluripotent Stem Cells (iPSCs) from patients with Focal Cortical Dysplasia. Brain Res Bull 2019; 155:112-118. [PMID: 31816405 DOI: 10.1016/j.brainresbull.2019.11.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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: 07/02/2019] [Revised: 11/26/2019] [Accepted: 11/27/2019] [Indexed: 10/25/2022]
Abstract
Focal cortical dysplasia (FCD) is a malformation of cortical development which is strongly associated with drug-refractory epilepsy. Certain studies have demonstrated an increase in mTOR signaling in patients with FCD on the basis of observation of phosphorylated molecules. The aim of the present study was to verify the differences in genes involved in cell proliferation, adhesion, and control of apoptosis during embryonic neurogenesis in iPSCs derived from the Focal Cortical Dysplasia. Fibroblasts were obtained from the skin biopsies of patients with FCD (n = 2) and controls (n = 2). iPSCs were generated by exposing the fibroblasts to viral vectors that contained the Yamanaka factors (OCT4, SOX2, KLF4, and c-MYC genes) responsible for promoving cell reprogramation. The fibroblasts and iPSCs were tested during different phases of neurodifferentiation for migration capacity and expression of the genes involved in the PI3K pathway. Fibroblasts of patients with FCD migrated with greater intensity during the first two time points of analyses. iPSCs did not exhibit any difference in cell migration between the groups. Fibroblasts, brain tissue, and iPSCs of the patients with FCD exhibited a significant reduction in the relative expression values of 4EBP-1. During neurodevelopment, the iPSCs from patients with FCD exhibited a reduction in the expression of cIAP-1, cIAP-2, PI3K, β-Catenin and 4EBP-1 gene. We suggest that the differences observed in the migration potential of adult cells and in the gene expression related to the fundamental processes involved in normal brain development during the neurodifferentiation process might be associated with cortical alteration in the patients with FCD.
Collapse
Affiliation(s)
- Daniel Rodrigo Marinowic
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil; Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Fernanda Majolo
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil; Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Gabriele Goulart Zanirati
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil; Graduate Program in Medicine, Pediatrics and Child Health, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Ismael Plentz
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil; Graduate Program in Medicine, Pediatrics and Child Health, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Eliseu Paglioli Neto
- School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil; Epilepsy Surgery Program of São Lucas Hospital of Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - André Luís Fernandes Palmini
- School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil; Epilepsy Surgery Program of São Lucas Hospital of Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Denise Cantarelli Machado
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil; Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Jaderson Costa Da Costa
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil; Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil; Graduate Program in Medicine, Pediatrics and Child Health, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil; School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
| |
Collapse
|
11
|
Petracco R, Dias ACDO, Taylor H, Petracco Á, Badalotti M, Michelon JDR, Marinowic DR, Hentschke M, Azevedo PND, Zanirati G, Machado DC. Evaluation of miR-135a/b expression in endometriosis lesions. Biomed Rep 2019; 11:181-187. [PMID: 31565224 DOI: 10.3892/br.2019.1237] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 12/21/2018] [Accepted: 07/10/2019] [Indexed: 12/24/2022] Open
Abstract
The pathogenesis of endometriosis is not clear; however, microRNAs (miRNAs/miRs) are involved in the pathogenesis. miRNAs are short noncoding RNAs involved in post-transcriptional regulation of gene expression by silencing the expression of target genes. The expression of miR-135a/b is associated with endometrial receptivity and implantation; the expression is also associated with the expression of certain genes, including homeobox protein Hox-A10 (HOXA-10). The present study investigated the expression of miR-135a/b in eutopic and ectopic endometrium tissues throughout the different phases of the menstrual cycle. Samples of ectopic endometriosis lesions and eutopic endometrium tissue from 23 patients who underwent laparoscopic surgery were obtained and analyzed. miRNA was extracted and the expression levels of miR-135a/b were determined by reverse transcription quantitative polymerase chain reaction assays using U6 as a housekeeping control. The expression levels of miR-135a and miR-135b in endometriosis lesions were decreased compared with the levels in endometrium tissue. However, miR-135a/b expression levels were increased in the secretory phase compared with the proliferative phase in endometriosis lesions. The increased expression of miR-135a/b during the secretory phase compared with the proliferative phase suggested that these genes serve a determinant role in the homeostasis of reproductive tissue. Therefore, the expression of genes may affect endometrial functioning, impairing embryo implantation.
Collapse
Affiliation(s)
- Rafaella Petracco
- School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil.,Fertilitat Center of Reproductive Medicine, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
| | | | - Hugh Taylor
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University, New Haven, CT 06520-8063, USA
| | - Álvaro Petracco
- School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil.,Fertilitat Center of Reproductive Medicine, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
| | - Mariângela Badalotti
- School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil.,Fertilitat Center of Reproductive Medicine, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
| | - João Da Rosa Michelon
- School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil.,Fertilitat Center of Reproductive Medicine, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
| | - Daniel Rodrigo Marinowic
- School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil.,Fertilitat Center of Reproductive Medicine, Porto Alegre, Rio Grande do Sul 90610-000, Brazil.,Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
| | - Marta Hentschke
- School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil.,Fertilitat Center of Reproductive Medicine, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
| | - Pamella Nunes De Azevedo
- School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil.,Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
| | - Gabriele Zanirati
- School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil.,Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
| | - Denise Cantarelli Machado
- School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil.,Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul 90610-000, Brazil
| |
Collapse
|
12
|
Majolo F, Marinowic DR, Palmini ALF, DaCosta JC, Machado DC. Migration and Synaptic Aspects of Neurons Derived from Human Induced Pluripotent Stem Cells from Patients with Focal Cortical Dysplasia II. Neuroscience 2019; 408:81-90. [DOI: 10.1016/j.neuroscience.2019.03.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 03/11/2019] [Accepted: 03/12/2019] [Indexed: 01/30/2023]
|
13
|
do Prado-Lima PAS, Onsten GA, de Oliveira GN, Brito GC, Ghilardi IM, de Souza EV, Dos Santos PG, Salamoni SD, Machado DC, Duarte MMF, Barbisan F, da Cruz IBM, Costa-Ferro ZSM, daCosta JC. The antidepressant effect of bone marrow mononuclear cell transplantation in chronic stress. J Psychopharmacol 2019; 33:632-639. [PMID: 31018809 DOI: 10.1177/0269881119841562] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Inflammation could be a risk factor for the development of depression and change the outcome of this common chronic-recurrent mental disorder. AIMS This study aimed to investigate if bone marrow mononuclear cell (BMMC) transplantation is effective in restoring sucrose preference in rats subjected to chronic stress (CS), if it has an anti-inflammatory effect and is able to restore damaged DNA. METHODS The effect of BMMC transplantation was studied in a controlled protocol (compared with a control group and a selective serotonin reuptake inhibitor escitalopram group) involving sucrose preference in CS in rats. Measurements were taken of the amygdala, hippocampus, frontal cortex, and other brain areas, the spleen and blood pro-inflammatory cytokines, namely interleukin-1β, interleukin-6, tumor necrosis factor-alpha, and interferon-gamma, as well as anti-inflammatory cytokine interleukin-10. Finally, 8-hydroxy-2'-deoxyguanosine (a DNA damage marker) was determined. RESULTS BMMC transplantation was as effective as escitalopram in restoring sucrose preference. It also had an anti-inflammatory effect and slightly improved damaged DNA after one week. CONCLUSIONS These findings suggest administration of BMMC in rats subjected to CS restores sucrose preference, resolves inflammation in both the peripheral and central nervous system, as well as diminishes DNA damage. This effect was similar to that of escitalopram, which is effective in the treatment of depressive patients.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Fernanda Barbisan
- 2 Laboratório de Biogenômica, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | | | | | | |
Collapse
|
14
|
da Silva APB, Souza DG, Souza DO, Machado DC, Sato DK. Role of Glutamatergic Excitotoxicity in Neuromyelitis Optica Spectrum Disorders. Front Cell Neurosci 2019; 13:142. [PMID: 31031597 PMCID: PMC6473164 DOI: 10.3389/fncel.2019.00142] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 12/17/2018] [Accepted: 03/21/2019] [Indexed: 01/12/2023] Open
Abstract
Neuromyelitis optica spectrum disorder (NMOSD) is an inflammatory disorder mediated by immune-humoral responses directed against central nervous system (CNS) antigens. Most patients are positive for specific immunoglobulin G (IgG) auto-antibodies for aquaporin-4 (AQP4), a water channel present in astrocytes. Antigen-antibody binding promotes complement system cascade activation, immune system cell infiltration, IgG deposition, loss of AQP4 and excitatory amino acid transporter 2 (EAAT2) expression on the astrocytic plasma membrane, triggering necrotic destruction of spinal cord tissue and optic nerves. Astrocytes are very important cells in the CNS and, in addition to supporting other nerve cells, they also regulate cerebral homeostasis and control glutamatergic synapses by modulating neurotransmission in the cleft through the high-affinity glutamate transporters present in their cell membrane. Specific IgG binding to AQP4 in astrocytes blocks protein functions and reduces EAAT2 activity. Once compromised, EAAT2 cannot take up free glutamate from the extracellular space, triggering excitotoxicity in the cells, which is characterized by overactivation of glutamate receptors in postsynaptic neurons. Therefore, the longitudinally extensive myelitis and optic neuritis lesions observed in patients with NMOSD may be the result of primary astrocytic damage triggered by IgG binding to AQP4, which can activate the immune-system cascade and, in addition, downregulate EAAT2. All these processes may explain the destructive lesions in NMOSD secondary to neuroinflammation and glutamatergic excitotoxicity. New or repurposed existing drugs capable of controlling glutamatergic excitotoxicity may provide new therapeutic options to reduce tissue damage and permanent disability after NMOSD attacks.
Collapse
Affiliation(s)
- Ana Paula Bornes da Silva
- Molecular and Cellular Biology Laboratory, Brain Institute, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Medical School, Institute of Geriatrics and Gerontology, Graduate Program in Biomedical Gerontology, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Débora Guerini Souza
- Graduate Program in Biological Sciences: Biochemistry, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Diogo Onofre Souza
- Graduate Program in Biological Sciences: Biochemistry, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Denise Cantarelli Machado
- Molecular and Cellular Biology Laboratory, Brain Institute, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Medical School, Institute of Geriatrics and Gerontology, Graduate Program in Biomedical Gerontology, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Douglas Kazutoshi Sato
- Molecular and Cellular Biology Laboratory, Brain Institute, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| |
Collapse
|
15
|
Majolo F, Marinowic DR, Machado DC, Da Costa JC. Important advances in Alzheimer's disease from the use of induced pluripotent stem cells. J Biomed Sci 2019; 26:15. [PMID: 30728025 PMCID: PMC6366077 DOI: 10.1186/s12929-019-0501-5] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 01/09/2019] [Indexed: 12/14/2022] Open
Abstract
Among the various types of dementia, Alzheimer’s disease (AD) is the most prevalent and is clinically defined as the appearance of progressive deficits in cognition and memory. Considering that AD is a central nervous system disease, getting tissue from the patient to study the disease before death is challenging. The discovery of the technique called induced pluripotent stem cells (iPSCs) allows to reprogram the patient’s somatic cells to a pluripotent state by the forced expression of a defined set of transcription factors. Many studies have shown promising results and made important conclusions beyond AD using iPSCs approach. Due to the accumulating knowledge related to this topic and the important advances obtained until now, we review, using PubMed, and present an update of all publications related to AD from the use of iPSCs. The first iPSCs generated for AD were carried out in 2011 by Yahata et al. (PLoS One 6:e25788, 2011) and Yaqi et al. (Hum Mol Genet 20:4530–9, 2011). Like other authors, both authors used iPSCs as a pre-clinical tool for screening therapeutic compounds. This approach is also essential to model AD, testing early toxicity and efficacy, and developing a platform for drug development. Considering that the iPSCs technique is relatively recent, we can consider that the AD field received valuable contributions from iPSCs models, contributing to our understanding and the treatment of this devastating disorder.
Collapse
Affiliation(s)
- Fernanda Majolo
- Brain Institute of Rio Grande do Sul (BraIns), Postgraduate Program in Medicine and Health Sciences (PUCRS), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90610000, Brazil.
| | - Daniel Rodrigo Marinowic
- Brain Institute of Rio Grande do Sul (BraIns), Postgraduate Program in Medicine and Health Sciences (PUCRS), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90610000, Brazil
| | - Denise Cantarelli Machado
- Brain Institute of Rio Grande do Sul (BraIns), Postgraduate Program in Medicine and Health Sciences (PUCRS), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90610000, Brazil
| | - Jaderson Costa Da Costa
- Brain Institute of Rio Grande do Sul (BraIns), Postgraduate Program in Medicine and Health Sciences (PUCRS), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90610000, Brazil
| |
Collapse
|
16
|
Majolo F, Marinowic DR, Moura AÁ, Machado DC, da Costa JC. Use of induced pluripotent stem cells (iPSCs) and cerebral organoids in modeling the congenital infection and neuropathogenesis induced by Zika virus. J Med Virol 2018; 91:525-532. [DOI: 10.1002/jmv.25345] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 10/19/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Fernanda Majolo
- Neuroscience Laboratory, Brain Institute of Rio Grande do Sul (BraIns) from Pontifícia Universidade Católica do Rio Grande do Sul; Brazil
| | - Daniel Rodrigo Marinowic
- Neuroscience Laboratory, Brain Institute of Rio Grande do Sul (BraIns) from Pontifícia Universidade Católica do Rio Grande do Sul; Brazil
| | | | - Denise Cantarelli Machado
- Neuroscience Laboratory, Brain Institute of Rio Grande do Sul (BraIns) from Pontifícia Universidade Católica do Rio Grande do Sul; Brazil
| | - Jaderson Costa da Costa
- Neuroscience Laboratory, Brain Institute of Rio Grande do Sul (BraIns) from Pontifícia Universidade Católica do Rio Grande do Sul; Brazil
| |
Collapse
|
17
|
Marinowic DR, Zanirati G, Azevedo PN, De Souza EV, Bruzzo F, Silva SPD, Heuser EB, Machado DC, Da Costa JC. Umbilical Mononuclear Cells and Fibroblast Interaction Downregulate the Expression of Cell Cycle Negative Control Genes. Cell Reprogram 2018; 20:320-327. [PMID: 30204474 DOI: 10.1089/cell.2018.0014] [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: 11/13/2022] Open
Abstract
The human umbilical cord blood (HUCB) is an excellent source of adult stem cells, having the benefit of being younger than the bone marrow stem cells. The role of stem cells in the lesion repair mechanism is still being studied. We evaluated the capability of HUCB to interfere into the fibroblast dedifferentiation plasticity through cocultivation. Direct and indirect cocultures were maintained for 24, 48, and 72 hours. Coculture viability was evaluated by MTT assay. The messenger RNA was extracted, and the expression of p16 and p21 genes was estimated by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR). The direct or indirect contact did not interfere with fibroblast cell viability. However, these direct and indirect contacts reduced the expression of p16 and p21 genes. A sigmoidal curve was applied to adjust gene expression against time, and a mathematical function was established for gene expression according to cell culture type. These results suggest that the differentiated cells were influenced by immature cells (HUCB) either by the direct contact or by signaling molecules, which alter their behavior and plasticity. Therefore our data may contribute to paracrine effects other than the commonly known to be responsible for the repair of lesions in stem cell therapy.
Collapse
Affiliation(s)
- Daniel Rodrigo Marinowic
- 1 Brain Institute of Rio Grande do Sul (BraIns) , Porto Alegre, Brazil .,2 Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul , Porto Alegre, Brazil
| | - Gabriele Zanirati
- 1 Brain Institute of Rio Grande do Sul (BraIns) , Porto Alegre, Brazil .,3 Graduate Program in Medicine, Pediatrics and Child Health, Pontifical Catholic University of Rio Grande do Sul , Porto Alegre, Brazil
| | - Pamella Nunes Azevedo
- 1 Brain Institute of Rio Grande do Sul (BraIns) , Porto Alegre, Brazil .,2 Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul , Porto Alegre, Brazil
| | | | - Fernanda Bruzzo
- 1 Brain Institute of Rio Grande do Sul (BraIns) , Porto Alegre, Brazil .,4 School of Medicine, Pontifical Catholic University of Rio Grande do Sul , Porto Alegre, Brazil
| | | | - Eliete Biasotto Heuser
- 1 Brain Institute of Rio Grande do Sul (BraIns) , Porto Alegre, Brazil .,6 Mathematics Course, School of Sciences, Pontifical Catholic University of Rio Grande do Sul , Porto Alegre, Brazil
| | - Denise Cantarelli Machado
- 1 Brain Institute of Rio Grande do Sul (BraIns) , Porto Alegre, Brazil .,2 Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul , Porto Alegre, Brazil .,4 School of Medicine, Pontifical Catholic University of Rio Grande do Sul , Porto Alegre, Brazil
| | - Jaderson Costa Da Costa
- 1 Brain Institute of Rio Grande do Sul (BraIns) , Porto Alegre, Brazil .,2 Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul , Porto Alegre, Brazil .,3 Graduate Program in Medicine, Pediatrics and Child Health, Pontifical Catholic University of Rio Grande do Sul , Porto Alegre, Brazil .,4 School of Medicine, Pontifical Catholic University of Rio Grande do Sul , Porto Alegre, Brazil
| |
Collapse
|
18
|
Klein-Júnior CA, Zimmer R, Hentschke GS, Machado DC, Dos Santos RB, Reston EG. Effect of heat treatment on cytotoxicity of self-adhesive resin cements: Cell viability analysis. Eur J Dent 2018; 12:281-286. [PMID: 29988221 PMCID: PMC6004809 DOI: 10.4103/ejd.ejd_34_18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Objective The aim of the study was to assess, in vitro, the influence on cytotoxicity of heat treatment applied before photopolymerization, while mixing three self-adhesive resin cements, in an NIH/3T3 fibroblast cell culture, based on cell viability measures. Methods Samples were divided into three groups: (1) no heat treatment while mixing (control), (2) 37°C, and (3) 60°C heat treatment while mixing. Cements were light-cured immediately after mixing and immersed in Dulbecco's Modified Eagle Media for the extraction of possibly uncured products after 24 h and 7 days. Cultures contained 0.5 mL of NIH/3T3 fibroblasts per well at a concentration of 0.4 × 105 cells/mL and specific extracts for each sample. Statistical Analysis Used Data were statistically analyzed with ANOVA and post hoc Student-Newman-Keuls (significance of 5%). Results Cement cytotoxicity increased with time, as shown by the higher values observed at 7 days. There was a slight difference in intragroup cytotoxicity levels between 24 h and 7 days. Heat treatment at 60°C was associated with a major decrease in cytotoxicity levels in all three groups, both at 24 h and at 7 days, with no differences among the cements. Conclusions Heat treatment at 60°C should be considered as a strategy to reduce cytotoxicity of self-adhesive resin cements, as evidenced by the results observed at 24 h and 7 days of analysis.
Collapse
Affiliation(s)
- Celso Afonso Klein-Júnior
- Department of Operative Dentistry, School of Dentistry, Lutheran University of Brazil, Cachoeira do Sul, Rio Grande do Sul, Brazil
| | - Roberto Zimmer
- Department of Operative Dentistry, School of Dentistry, Lutheran University of Brazil, Cachoeira do Sul, Rio Grande do Sul, Brazil
| | | | - Denise Cantarelli Machado
- Neuroscience Department, Brain Institute, Neuroscience Laboratory, Pontifical Catholic University of Rio Grande do Sul, Rio Grande do Sul, Brazil
| | - Rubem Beraldo Dos Santos
- Department of Operative Dentistry, School of Dentistry, Lutheran University of Brazil, Cachoeira do Sul, Rio Grande do Sul, Brazil
| | - Eduardo Galia Reston
- Department of Operative Dentistry, School of Dentistry, Lutheran University of Brazil, Cachoeira do Sul, Rio Grande do Sul, Brazil
| |
Collapse
|
19
|
Ferreira APA, Póvoa LC, Zanier JFC, Machado DC, Ferreira AS. Sensitivity for palpating lumbopelvic soft- tissues and bony landmarks and its associated factors: A single-blinded diagnostic accuracy study. J Back Musculoskelet Rehabil 2017; 30:735-744. [PMID: 28453451 DOI: 10.3233/bmr-150356] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Evidence on the diagnostic performance of palpatory methods and possible confounding factors is scarce. OBJECTIVES To examine the sensitivity of palpatory methods for location of lumbopelvic landmarks and to assess its association with personal characteristics. METHODS Eighty-three participants (41 men, 55.6 (16.5) years, 25.9 (4.8) kg/m2 [mean (SD)]) were enrolled in this single-blinded study. Fourteen body and softy-tissue landmarks were sequentially palpated from the spinous process of L4 to the ischial tuberosity. CT-scan images were used to assess what landmark was located. RESULTS Sensitivity for location was in range 22-86% for soft-tissues and 26-69% for bony landmarks. Reduction in sensitivity was observed from the quadratus lumborum to the inferior and lateral angle of the sacrum (86-26% and 75-33%, left and right sides, respectively). Palpations of L4 and L5 spinous processes were systematically more cephalic than other landmarks. Gender was weakly correlated to almost all landmarks (rpb= 0.333 or weaker). Body mass index was weakly correlated to the accurate location of ILAS and quadratus lumborum, great trochanter, PSIS, and piriformis (rpb=-0.307 or weaker). CONCLUSIONS Systematic and propagation errors were present using sequential palpatory methods. Palpation in men was more sensitive and higher BMI was associated with lower sensitivity for lumbopelvic landmarks.
Collapse
Affiliation(s)
- A P A Ferreira
- Instituto Brasileiro de Osteopatia, Centro, CEP 22440-901, RJ, Brasil.,Programa de Pós-graduação em Ciências da Reabilitação, Centro Universitário Augusto Motta, Bonsucesso, CEP 21041-010, RJ, Brasil
| | - L C Póvoa
- Instituto Brasileiro de Osteopatia, Centro, CEP 22440-901, RJ, Brasil.,Programa de Pós-graduação em Ciências da Reabilitação, Centro Universitário Augusto Motta, Bonsucesso, CEP 21041-010, RJ, Brasil
| | - J F C Zanier
- Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro, Vila Isabel, CEP 20551-030, RJ, Brasil
| | - D C Machado
- Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro, Vila Isabel, CEP 20551-030, RJ, Brasil
| | - A S Ferreira
- Programa de Pós-graduação em Ciências da Reabilitação, Centro Universitário Augusto Motta, Bonsucesso, CEP 21041-010, RJ, Brasil
| |
Collapse
|
20
|
da Silveira Gerzson A, Machado DC, Marinovic DR, Pagnoncelli RM. Assessment of Adhesion and Proliferation of Bone Marrow Mesenchymal Stem Cells in Polymer Matrices with rhGH. Int J Oral Maxillofac Implants 2017; 32:e183-e189. [PMID: 28494049 DOI: 10.11607/jomi.5326] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
PURPOSE Biomaterials, as an alternative to autogenous bone and other biologic tissues, have been widely used in oral and maxillofacial surgery. In this context, a biomaterial that functions as a scaffold (osteoconductor), combined with a growth factor (osteoinductor), would be of great interest for clinical application. Biodegradable polymers used for slow drug release have been investigated, demonstrating good results and interesting potential. Growth hormone (GH) may be released by incorporating it into these polymers. This study aimed to evaluate cell adhesion and proliferation of a polymeric biomaterial for slow release of recombinant human GH (rhGH). MATERIALS AND METHODS Poly(lactic-co-glycolic acid) (PLGA) and PLGA/polycaprolactone (PCL) (at a 70/30 ratio of PLGA to PCL) matrices were prepared by the solvent evaporation method, combined or not with GH. Biomaterials were tested for cell adhesion and proliferation by culture in mesenchymal stem cells derived from Wistar rat bone marrow, 4',6-diamidino-2-phenylindole (DAPI) staining, and subsequent cell counting, in addition to scanning electron microscopy. Cell adhesion and proliferation was assessed at 24 and 72 hours of biomaterial exposure to culture medium. RESULTS All tested polymers exhibited cell adhesion and proliferation. However, PLGA-based biomaterials, especially when combined with GH, showed greater cell proliferation when the difference in growth from 24 to 72 hours was evaluated. GH appeared to modify the polymer surface, with increased roughness and microporosity. This feature was more evident in the PLGA + GH combination. CONCLUSION The biomaterials tested showed pronounced cell adhesion in all test groups, and GH appeared to contribute to the increase in cell proliferation, especially when combined with PLGA as compared with pure PLGA. Further studies are required to clarify this potential for development of new biomaterials.
Collapse
|
21
|
Marinowic DR, Majolo F, Sebben AD, Da Silva VD, Lopes TG, Paglioli E, Palmini A, Machado DC, Da Costa JC. Induced pluripotent stem cells from patients with focal cortical dysplasia and refractory epilepsy. Mol Med Rep 2017; 15:2049-2056. [PMID: 28260047 PMCID: PMC5364982 DOI: 10.3892/mmr.2017.6264] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 01/16/2017] [Indexed: 01/12/2023] Open
Abstract
Focal cortical dysplasia (FCD) is caused by numerous alterations, which can be divided into abnormalities of the cortical architecture and cytological variations; however, the exact etiology of FCD remains unknown. The generation of induced pluripotent stem cells (iPSCs) from the cells of patients with neurological diseases, and their subsequent tissue‑specific differentiation, serves as an invaluable source for testing and studying the initial development and subsequent progression of diseases associated with the central nervous system. A total of 2 patients demonstrating seizures refractory to drug treatment, characterized as FCD Type IIb, were enrolled in the present study. Fibroblasts were isolated from residual skin fragments obtained from surgical treatment and from brain samples obtained during surgical resection. iPSCs were generated following exposure of fibroblasts to viral vectors containing POU class 5 homeobox 1 (OCT4), sex determining region Y‑box 2 (SOX2), Kruppel‑like factor 4 and c‑MYC genes, and were characterized by immunohistochemical staining for the pluripotent markers homeobox protein NANOG, SOX2, OCT4, TRA1‑60 and TRA1‑81. The brain samples were tested with antibodies against protein kinase B (AKT), phosphorylated‑AKT, mechanistic target of rapamycin (mTOR) and phosphorylated‑mTOR. Analysis of the AKT/mTOR pathway revealed a statistically significant difference between the cerebral tissues of the two patients, which were of different ages (45 and 12 years old). Clones with the morphological features of embryonic cells were detected on the 13th day and were characterized following three subcultures. The positive staining characteristics of the embryonic cells confirmed the successful generation of iPSCs derived from the patients' fibroblasts. Therefore, the present study presents a method to obtain a useful cellular source that may help to understand embryonic brain development associated with FCD.
Collapse
Affiliation(s)
- Daniel Rodrigo Marinowic
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
- Institute for Biomedical Research, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
| | - Fernanda Majolo
- Institute for Biomedical Research, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
| | - Alessandra Deise Sebben
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
- Institute for Biomedical Research, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
| | - Vinicius Duval Da Silva
- Laboratory of Pathological Anatomy, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
- Postgraduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
| | - Tiago Giuliani Lopes
- Laboratory of Pathological Anatomy, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
| | - Eliseu Paglioli
- Epilepsy Surgery Program, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
| | - André Palmini
- Postgraduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
- Epilepsy Surgery Program, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
| | - Denise Cantarelli Machado
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
- Institute for Biomedical Research, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
- Laboratory of Pathological Anatomy, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
| | - Jaderson Costa Da Costa
- Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
- Postgraduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90610000, Brazil
| |
Collapse
|
22
|
Calice da Silva C, Azevedo BN, Machado DC, Zimmer ER, Martins LAM, da Costa JC. Dissociation between dopaminergic response and motor behavior following intrastriatal, but not intravenous, transplant of bone marrow mononuclear stem cells in a mouse model of Parkinson's disease. Behav Brain Res 2017; 324:30-40. [PMID: 28167338 DOI: 10.1016/j.bbr.2017.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 08/20/2016] [Revised: 01/29/2017] [Accepted: 02/02/2017] [Indexed: 12/13/2022]
Abstract
Parkinson's disease is characterized by the progressive loss of dopaminergic neurons from the substantia nigra, a process that leads to a dopamine deficiency in the striatum. This deficiency is responsible for the development of motor symptoms, including resting tremor, bradykinesia, rigidity and postural instability. Based on the observation of substantial neuronal death, alternatives to Parkinson's disease treatment have been studied, including cell-based therapies. The present study aimed to assess the therapeutic potential of intravenous and intrastriatal transplant of bone marrow mononuclear cells in a mouse model of Parkinson's disease. Animals underwent stereotaxic surgery and received an injection of 6-hydroxydopamine into their medial forebrain bundle. Three weeks later, mice were injected with bone marrow mononuclear cells or saline through the caudal vein or directly into their right striatum. Motor function was assessed using the rotarod and apomorphine-induced rotation tests. Our results showed that intrastriatal bone marrow mononuclear cells, but not intravenous, have a short-term therapeutic effect on dopaminergic response in this mice model of parkinsonism assessed by the apomorphine-induced rotation test. This phenomenon was not identified on the rotarod test, showing dissociation between dopaminergic response and motor behavior. Further experiments are needed to elucidate the precise mechanisms involved in these effects.
Collapse
Affiliation(s)
- Caroline Calice da Silva
- Postgraduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, 90619-900, Brazil; Laboratory of Neurosciences and Cellular Signaling, Institute of Biomedical Research and Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, 90619-900, Brazil
| | - Bárbara Nunes Azevedo
- Laboratory of Neurosciences and Cellular Signaling, Institute of Biomedical Research and Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, 90619-900, Brazil
| | - Denise Cantarelli Machado
- Postgraduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, 90619-900, Brazil; Laboratory of Molecular and Cellular Biology, Institute of Biomedical Research, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, 90619-900, Brazil
| | - Eduardo R Zimmer
- Department of Biochemistry, Institute of Basic Health Sciences (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, 90035-003, Brazil
| | - Leo Anderson Meira Martins
- Department of Biochemistry, Institute of Basic Health Sciences (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, 90035-003, Brazil
| | - Jaderson Costa da Costa
- Postgraduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, 90619-900, Brazil; Laboratory of Neurosciences and Cellular Signaling, Institute of Biomedical Research and Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, 90619-900, Brazil.
| |
Collapse
|
23
|
Camilo GB, Carvalho ARS, Machado DC, Mogami R, Kasuki L, Gadelha MR, Melo PL, Lopes AJ. Correlations between forced oscillation technique parameters and pulmonary densitovolumetry values in patients with acromegaly. ACTA ACUST UNITED AC 2015; 48:877-85. [PMID: 26445330 PMCID: PMC4617113 DOI: 10.1590/1414-431x20154786] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 04/29/2015] [Indexed: 01/17/2023]
Abstract
The aims of this study were to evaluate the forced oscillation technique (FOT) and
pulmonary densitovolumetry in acromegalic patients and to examine the correlations
between these findings. In this cross-sectional study, 29 non-smoking acromegalic
patients and 17 paired controls were subjected to the FOT and quantification of lung
volume using multidetector computed tomography (Q-MDCT). Compared with the controls,
the acromegalic patients had a higher value for resonance frequency [15.3 (10.9-19.7)
vs 11.4 (9.05-17.6) Hz, P=0.023] and a lower value for mean
reactance [0.32 (0.21-0.64) vs 0.49 (0.34-0.96) cm
H2O/L/s2, P=0.005]. In inspiratory Q-MDCT, the acromegalic
patients had higher percentages of total lung volume (TLV) for nonaerated and poorly
aerated areas [0.42% (0.30-0.51%) vs 0.25% (0.20-0.32%), P=0.039 and
3.25% (2.48-3.46%) vs 1.70% (1.45-2.15%), P=0.001, respectively].
Furthermore, the acromegalic patients had higher values for total lung mass in both
inspiratory and expiratory Q-MDCT [821 (635-923) vs 696 (599-769) g,
P=0.021 and 844 (650-945) vs 637 (536-736) g, P=0.009,
respectively]. In inspiratory Q-MDCT, TLV showed significant correlations with all
FOT parameters. The TLV of hyperaerated areas showed significant correlations with
intercept resistance (rs=−0.602, P<0.001) and mean resistance
(rs=−0.580, P<0.001). These data showed that acromegalic patients
have increased amounts of lung tissue as well as nonaerated and poorly aerated areas.
Functionally, there was a loss of homogeneity of the respiratory system. Moreover,
there were correlations between the structural and functional findings of the
respiratory system, consistent with the pathophysiology of the disease.
Collapse
Affiliation(s)
- G B Camilo
- Programa de Pós-Graduação em Ciências Médicas, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, BR
| | - A R S Carvalho
- Laboratório de Fisiologia da Respiração, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, BR
| | - D C Machado
- Programa de Pós-Graduação em Ciências Médicas, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, BR
| | - R Mogami
- Programa de Pós-Graduação em Ciências Médicas, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, BR
| | - L Kasuki
- Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, RJ, BR
| | - M R Gadelha
- Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, RJ, BR
| | - P L Melo
- Programa de Pós-Graduação em Ciências Médicas, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, BR
| | - A J Lopes
- Programa de Pós-Graduação em Ciências Médicas, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, BR
| |
Collapse
|
24
|
Pitrez PM, Gualdi LP, Barbosa GL, Sudbrack S, Ponzi D, Cao RG, Silva ACA, Machado DC, Jones MH, Stein RT, Graeff-Teixeira C. Effect of different helminth extracts on the development of asthma in mice: The influence of early-life exposure and the role of IL-10 response. Exp Parasitol 2015; 156:95-103. [PMID: 26093162 DOI: 10.1016/j.exppara.2015.06.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 04/07/2015] [Accepted: 06/12/2015] [Indexed: 11/19/2022]
Abstract
It is not currently clear whether different parasites have distinct effects on the airway inflammatory response in asthma and whether exposure in early life to helminths have a stronger impact in a potential inhibitory effect on asthma. The aim of this study is to evaluate the effect of exposure to different helminth extracts on the development of allergic pulmonary response in mice, including early-life exposure. Different helminth extracts (Angiostrongylus costaricensis, Angiostrongylus cantonensis and Ascaris lumbricoides) were studied in female adult BALB/c and C57BL/6 IL-10-deficient mice in a protocol of murine asthma, injected intraperitoneally in different periods of exposure (early, pre-sensitization and post-sensitization). Cell counts in bronchoalveolar lavage (BAL), eosinophil peroxidase (EPO) from lung tissue, cytokine levels from BAL/spleen cell cultures, and lung histology were analyzed. Airway cellular influx induced by OVA was significantly inhibited by extracts of A. cantonensis and A. lumbricoides. Extracts of A. lumbricoides and A. costaricensis led to a significant reduction of IL-5 in BAL (p < 0.001). Only the exposure to A. lumbricoides led to an increased production of IL-10 in the lungs (p < 0.001). In IL-10-deficient mice exposed to A. costaricensis pre-sensitization, eosinophil counts and IL-5 levels in BAL and EPO in lung tissue were significantly reduced. In the early exposure to A. cantonensis, lung inflammation was clearly inhibited. In conclusion, different helminth extracts inhibit allergic lung inflammation in mice. IL-10 may not play a central role in some helminth-host interactions. Early exposure to helminth extracts could be a potential strategy to explore primary prevention in asthma.
Collapse
Affiliation(s)
- P M Pitrez
- Institute of Biomedical Research, Infant Center, Laboratory of Pediatric Respirology, Pontifícia Universidade Católica do Rio Grande do Sul, Brazil.
| | - L P Gualdi
- Institute of Biomedical Research, Infant Center, Laboratory of Pediatric Respirology, Pontifícia Universidade Católica do Rio Grande do Sul, Brazil
| | - G L Barbosa
- Institute of Biomedical Research, Infant Center, Laboratory of Pediatric Respirology, Pontifícia Universidade Católica do Rio Grande do Sul, Brazil
| | - S Sudbrack
- Institute of Biomedical Research, Infant Center, Laboratory of Pediatric Respirology, Pontifícia Universidade Católica do Rio Grande do Sul, Brazil
| | - D Ponzi
- Institute of Biomedical Research, Infant Center, Laboratory of Pediatric Respirology, Pontifícia Universidade Católica do Rio Grande do Sul, Brazil
| | - R G Cao
- Institute of Biomedical Research, Infant Center, Laboratory of Pediatric Respirology, Pontifícia Universidade Católica do Rio Grande do Sul, Brazil
| | - A C A Silva
- Institute of Biomedical Research, Laboratory of Molecular Parasitology, Pontifícia Universidade Católica do Rio Grande do Sul, Brazil
| | - D C Machado
- Institute of Biomedical Research, Laboratory of Cell Biology and Respiratory Diseases, Pontifícia Universidade Católica do Rio Grande do Sul, Brazil
| | - M H Jones
- Institute of Biomedical Research, Infant Center, Laboratory of Pediatric Respirology, Pontifícia Universidade Católica do Rio Grande do Sul, Brazil
| | - R T Stein
- Institute of Biomedical Research, Infant Center, Laboratory of Pediatric Respirology, Pontifícia Universidade Católica do Rio Grande do Sul, Brazil
| | - C Graeff-Teixeira
- Institute of Biomedical Research, Laboratory of Molecular Parasitology, Pontifícia Universidade Católica do Rio Grande do Sul, Brazil
| |
Collapse
|
25
|
Lopes AJ, Mogami R, Camilo GB, Machado DC, Melo PL, Carvalho ARS. Relationships between the pulmonary densitometry values obtained by CT and the forced oscillation technique parameters in patients with silicosis. Br J Radiol 2015; 88:20150028. [PMID: 25747897 DOI: 10.1259/bjr.20150028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To evaluate the correlations between pulmonary densitometry values and forced oscillation technique (FOT) parameters in patients with silicosis. METHODS This cross-sectional study comprised 36 non-smoker patients with silicosis and 20 matched control subjects who were submitted to FOT and multidetector CT (MDCT). RESULTS Compared with the control subjects, the MDCT evaluation demonstrated that patients with silicosis exhibited greater total lung mass. These patients also had larger non-aerated and poorly aerated compartments, which included nodules and scarring. Compared with the control subjects, FOT evaluation demonstrated that patients with silicosis exhibited changes in both reactive and resistive properties of the respiratory system. In these patients, there was a greater heterogeneity of the respiratory system and increased work of breathing. Significant correlations between non-aerated compartment size and FOT parameters that reflect the non-homogeneity of the respiratory system were observed. The dynamic compliance of the respiratory system was negatively correlated with non-aerated compartment size, while the impedance at 4 Hz was positively correlated with non-aerated compartment size. CONCLUSION Patients with silicosis have heavier lungs. In these patients, a larger non-aerated compartment is associated with a worsening of lung function. A more significant pulmonary involvement is associated with a loss of homogeneity and increased mechanical load of the respiratory system. Advances in knowledge The findings provided by both pulmonary densitometry and FOT may add valuable information to the subjective analysis of silicosis; however, more studies are necessary to evaluate the potential use of these methods for assessing disease progression.
Collapse
Affiliation(s)
- A J Lopes
- 1 Postgraduate Programme in Medical Sciences, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | | | | | | |
Collapse
|
26
|
Poitevin AA, Viezzer C, Machado DC, Costa BEPD, Figueiredo AE, d'Avila D, Poli-de-Figueiredo CE. Effect of standard and neutral-pH peritoneal dialysis solutions upon fibroblasts proliferation. J Bras Nefrol 2014; 36:150-4. [DOI: 10.5935/0101-2800.20140024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Accepted: 10/12/2013] [Indexed: 11/20/2022] Open
|
27
|
Jaskulski MR, Medeiros BC, Borges JV, Zalewsky R, Fonseca MEC, Marinowic DR, Rocha MP, Nodari P, Machado DC. Assessment of extended-spectrum β-lactamase, KPC carbapenemase and porin resistance mechanisms in clinical samples of Klebsiella pneumoniae and Enterobacter spp. Int J Antimicrob Agents 2013; 42:76-9. [PMID: 23664677 DOI: 10.1016/j.ijantimicag.2013.03.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 03/07/2013] [Accepted: 03/17/2013] [Indexed: 11/24/2022]
Abstract
The emergence and spread of resistance mechanisms in Gram-negative bacilli has complicated the treatment of serious nosocomial infections. Current automated systems for detection of Klebsiella pneumoniae carbapenemase (KPC)-producing isolates are unreliable. One possible straightforward alternative method is evaluation of ertapenem resistance. However, the accuracy of this method is affected by other resistance mechanisms such as AmpC gene expression or extended-spectrum β-lactamase production associated with porin loss. This study included 128 samples of K. pneumoniae and Enterobacter spp. that were non-susceptible to ertapenem. The disk diffusion and Etest method were applied to determine susceptibility to imipenem, meropenem and ertapenem. Isolates exhibiting intermediate or complete resistance to ertapenem were evaluated for resistance mechanisms. bla(TEM), bla(SHV), bla(CTX-M), bla(CTX-M-2) and bla(KPC) genes were tested for by PCR, and the presence of outer membrane protein was investigated by dot-blot assay. bla(TEM) was detected in 52.9% and 10.3%, bla(SHV) in 29.4% and 0.94%, bla(CTX-M) in 41.4% and 1.9% and bla(CTX-M-2) in 23.5% and 1.9% of K. pneumoniae and Enterobacter cloacae isolates, respectively. The bla(KPC) gene was present in 12.6% of Enterobacter spp. isolates. OmpC and OmpF were present in 6.6% of E. cloacae isolates. These results indicate that several resistance mechanisms contribute to potential therapeutic failure of carbapenem therapy and point to the need for better detection methods and surveillance strategies.
Collapse
Affiliation(s)
- M R Jaskulski
- Laboratory of Cellular and Molecular Biology, Biomedical Research Institute of Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga 6690, CEP 90610-000, Porto Alegre, RS, Brazil
| | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Peletti-Figueiró M, Silva PGD, Souza OED, Lambert AP, Machado DC, Roesch-Ely M, Henriques JAP, Falavigna A. Stem-cell treatment in disc degeneration: What is the evidence? Coluna/Columna 2013. [DOI: 10.1590/s1808-18512013000100013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
To review the potential role of stem cells in treating degenerative disc disease of the intervertebral disc (IVD). A review was performed of articles from the Medline database concerning stem cells and degenerative disc disease (DDD). To discuss the data, the papers were classified as: review, in vitro, experimental, and clinical. The currently available treatments were basically for symptom reduction, not to revert the IVD degenerative process. The use of mesenchymal stem cells (MSC) is being proposed as an option of treatment for DDD. In vitro studies have shown that the MSC are able to differentiate into NP cells and that the MSC also reduce the inflammatory levels of the degenerated IVD. Besides, experimental studies demonstrated that the MSC remained viable when injected into the IVD, and that they were able to regenerate partially from the degenerated IVD and its structure. The few clinical studies found in the literature presented diverging results. The use of MSC is being widely studied and shows promising results for the treatment of DDD. Although many advances are being achieved in studies in vitro and experimental, there is a lack of clinical studies to prove the role of MSC in DDD management.
Collapse
|
29
|
Friedrich MAG, Martins MP, Araújo MD, Klamt C, Vedolin L, Garicochea B, Raupp EF, Sartori El Ammar J, Machado DC, Costa JCD, Nogueira RG, Rosado-de-Castro PH, Mendez-Otero R, Freitas GRD. Intra-arterial infusion of autologous bone marrow mononuclear cells in patients with moderate to severe middle cerebral artery acute ischemic stroke. Cell Transplant 2012; 21 Suppl 1:S13-21. [PMID: 22507676 DOI: 10.3727/096368912x612512] [Citation(s) in RCA: 112] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Transplantation of autologous bone marrow mononuclear cells (BMMCs) has been proven safe in animal and human studies. However, there are very few studies in stroke patients. In this study, intra-arterial autologous BMMCs were infused in patients with moderate to severe acute middle cerebral artery infarcts. The subjects of this study included 20 patients with early or late spontaneous recanalization but with persistent deficits, in whom treatment could be initiated between 3 and 7 days after stroke onset. Mononuclear cells were isolated from bone marrow aspirates and infused at the proximal middle cerebral artery of the affected hemisphere. Safety analysis (primary endpoint) during the 6-month follow-up assessed death, any serious clinical events, neurological worsening with ≥ 4-point increase in National Institutes of Health Stroke Scale (NIHSS) scores, seizures, epileptogenic activity on electroencephalogram, and neuroimaging complications including new ischemic, hemorrhagic, or neoplastic lesions. Satisfactory clinical improvement (secondary endpoint) at 90 days was defined according to the pretreatment NIHSS scores as follows: modified Rankin Scale score of 0 in patients with NIHSS <8, modified Rankin Scale scores of 0-1 in patients with NIHSS 8-14, or modified Rankin Scale scores 0-2 in patients with NIHSS >14. Good clinical outcome was defined as mRS ≤2 at 90 days. Serial clinical, laboratory, electroencephalogram, and imaging evaluations showed no procedure-related adverse events. Satisfactory clinical improvement occurred in 6/20 (30%) patients at 90 days. Eight patients (40%) showed a good clinical outcome. Infusion of intra-arterial autologous BMMCs appears to be safe in patients with moderate to severe acute middle cerebral artery strokes. No cases of intrahospital mortality were seen in this pilot trial. Larger prospective randomized trials are warranted to assess the efficacy of this treatment approach.
Collapse
|
30
|
de Paula S, Greggio S, Marinowic DR, Machado DC, DaCosta JC. The dose-response effect of acute intravenous transplantation of human umbilical cord blood cells on brain damage and spatial memory deficits in neonatal hypoxia-ischemia. Neuroscience 2012; 210:431-41. [PMID: 22441035 DOI: 10.1016/j.neuroscience.2012.03.009] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Revised: 02/28/2012] [Accepted: 03/02/2012] [Indexed: 01/14/2023]
Abstract
Despite the beneficial effects of cell-based therapies on brain repair shown in most studies, there has not been a consensus regarding the optimal dose of human umbilical cord blood cells (HUCBC) for neonatal hypoxia-ischemia (HI). In this study, we compared the long-term effects of intravenous administration of HUCBC at three different doses on spatial memory and brain morphological changes after HI in newborn Wistar rats. In addition, we tested whether the transplanted HUCBC migrate to the injured brain after transplantation. Seven-day-old animals underwent right carotid artery occlusion and were exposed to 8% O(2) inhalation for 2 h. After 24 h, randomly selected animals were assigned to four different experimental groups: HI rats administered with vehicle (HI+vehicle), HI rats treated with 1×10(6) (HI+low-dose), 1×10(7) (HI+medium-dose), and 1×10(8) (HI+high-dose) HUCBC into the jugular vein. A control group (sham-operated) was also included in this study. After 8 weeks of transplantation, spatial memory performance was assessed using the Morris water maze (MWM), and subsequently, the animals were euthanized for brain morphological analysis using stereological methods. In addition, we performed immunofluorescence and polymerase chain reaction (PCR) analyses to identify HUCBC in the rat brain 7 days after transplantation. The MWM test showed a significant spatial memory recovery at the highest HUCBC dose compared with HI+vehicle rats (P<0.05). Furthermore, the brain atrophy was also significantly lower in the HI+medium- and high-dose groups compared with the HI+vehicle animals (P<0.01; 0.001, respectively). In addition, HUCBC were demonstrated to be localized in host brains by immunohistochemistry and PCR analyses 7 days after intravenous administration. These results revealed that HUCBC transplantation has the dose-dependent potential to promote robust tissue repair and stable cognitive improvement after HI brain injury.
Collapse
Affiliation(s)
- S de Paula
- Laboratório de Neurociências e de Sinalização Celular, Instituto do Cérebro, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | | | | | | | | |
Collapse
|
31
|
Silva TSN, Primo BT, Silva Júnior AN, Machado DC, Viezzer C, Santos LA. Use of calcium phosphate cement scaffolds for bone tissue engineering: in vitro study. Acta Cir Bras 2011; 26:7-11. [PMID: 21271197 DOI: 10.1590/s0102-86502011000100003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Accepted: 10/19/2010] [Indexed: 11/22/2022] Open
Abstract
PURPOSE To evaluate the ability of macroporous tricalcium phosphate cement (CPC) scaffolds to enable the adhesion, proliferation, and differentiation of mesenchymal stem cells derived from human bone marrow. METHODS Cells from the iliac crest of an adult human donor were processed and cultured on macroporous CPC discs. Paraffin spheres sized between 100 and 250µm were used as porogens. Cells were cultured for 5, 10, and 15 days. Next, we assessed cells' behavior and morphology on the biomaterial by scanning electron microscopy. The expression levels of the BGLA and SSP1 genes and the alkaline phosphatase (ALP) activity were quantified by the quantitative real-time polymerase chain reaction technique (QT-PCR) using the fluorophore SYBR GREEN(®). RESULTS QT-PCR detected the expression of the BGLA and SSP1 genes and the ALP activity in the periods of 10 and 15 days of culture. Thus, we found out that there was cell proliferation and differentiation in osteogenic cells. CONCLUSION Macroporous CPC, with pore sized between 100 and 250µm and developed using paraffin spheres, enables adhesion, proliferation, and differentiation of mesenchymal stem cells in osteogenic cells and can be used as a scaffold for bone tissue engineering.
Collapse
|
32
|
Venturin GT, Greggio S, Marinowic DR, Zanirati G, Cammarota M, Machado DC, DaCosta JC. Bone marrow mononuclear cells reduce seizure frequency and improve cognitive outcome in chronic epileptic rats. Life Sci 2011; 89:229-34. [PMID: 21718708 DOI: 10.1016/j.lfs.2011.06.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 05/10/2011] [Accepted: 06/03/2011] [Indexed: 11/27/2022]
Abstract
AIMS Epilepsy affects 0.5-1% of the world's population, and approximately a third of these patients are refractory to current medication. Given their ability to proliferate, differentiate and regenerate tissues, stem cells could restore neural circuits lost during the course of the disease and reestablish the physiological excitability of neurons. This study verified the therapeutic potential of bone marrow mononuclear cells (BMMCs) on seizure control and cognitive impairment caused by experimentally induced epilepsy. MAIN METHODS Status epilepticus (SE) was induced by lithium-pilocarpine injection and controlled with diazepam 90 min after SE onset. Lithium-pilocarpine-treated rats were intravenously transplanted 22 days after SE with BMMCs obtained from enhanced green fluorescent protein (eGFP) transgenic C57BL/6 mice. Control epileptic animals were given an equivalent volume of saline or fibroblast injections. Animals were video-monitored for the presence of spontaneous recurrent seizures prior to and following the cell administration procedure. In addition, rats underwent cognitive evaluation using a Morris water maze. KEY FINDINGS Our data show that BMMCs reduced the frequency of seizures and improved the learning and long-term spatial memory impairments of epileptic rats. EGFP-positive cells were detected in the brains of transplanted animals by PCR analysis. SIGNIFICANCE The positive behavioral effects observed in our study indicate that BMMCs could represent a promising therapeutic option in the management of chronic temporal lobe epilepsy.
Collapse
Affiliation(s)
- Gianina Teribele Venturin
- Programa de Pós-Graduação em Neurociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | | | | | | | | | | | | |
Collapse
|
33
|
da Rocha AKS, Bós AJG, Huttner E, Machado DC. [Prevalence of metabolic syndrome in indigenous people over 40 years of age in Rio Grande do Sul, Brazil]. Rev Panam Salud Publica 2011; 29:41-45. [PMID: 21390418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Accepted: 08/24/2010] [Indexed: 05/30/2023] Open
Abstract
OBJECTIVE To investigate the prevalence of the metabolic syndrome (MS) among indigenous people older than 40 years of age from two cities in the State of Rio Grande do Sul, southern Brazil. METHODS A descriptive, analytic, cross-sectional study was conducted in two municipalities, Porto Alegre and Nonoai, between July and August 2009. A total of 150 indigenous people older than 40 years of age (range: 40-104 years), participated in the study. MS prevalence was determined based on National Cholesterol Education Program - Adult Treatment Panel III criteria. Blood samples and anthropometric data were collected. The participants also answered a questionnaire on eating habits, which was then contrasted to the 10 steps to healthy eating proposed by the World Health Organization and recommended by the Brazilian Ministry of Health. RESULTS MS prevalence was 65.3%, affecting women more than men (P < 0.001). Changes in waist circumference, fasting glucose, and HDL-cholesterol and presence of hypertension, hypertriglyceridemia, and obesity were associated with MS. Age, smoking, and sedentary lifestyle were not associated with MS. Indigenous people with MS had a poor diet, with low intake of fruit and vegetables, low levels of physical activity, high consumption of sweets and soft drinks, and high prevalence of obesity. CONCLUSIONS A high prevalence of MS was observed among the indigenous people surveyed, especially in women. Education and motivation for healthy behaviors is possibly the best way to manage MS and promote health in a population that is still neglected by public health policies.
Collapse
Affiliation(s)
- Ana Karina Silva da Rocha
- Instituto de Geriatria e Gerontologia, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brasil.
| | | | | | | |
Collapse
|
34
|
Noronha JAP, Schwanke CHA, Machado DC, Braga R, Lubianca JM, Sesti FL, de Toledo AF, da Cruz IBM. Association between T102C polymorphism of serotonin 2A receptor gene and urinary incontinence in older women. J Investig Med 2010; 58:32-7. [PMID: 19820407 DOI: 10.2310/jim.0b013e3181c04760] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND The bladder's regulatory function is influenced by central serotonergic modulation. T102C polymorphism of the serotonin 2A (5-HT(2A)) receptor gene is associated with urinary incontinence (UI) that has been reported by older community dwellers. We analyzed the association between 5-HT(2A) receptor gene polymorphism and urodynamic tests for UI in older women. METHODS A case-control study was performed with 68 older women submitted to urodynamic evaluation and 162 older women without urinary problems (self-reported), all community dwellers enrolled in the Gravataí-GENESIS Project, Brazil. Clinical interviews, complete urodynamic evaluation following the International Continence Society Report on Good Urodynamic Practice (case group), and molecular analyses were performed (case and control groups). Serotonin 2A receptor gene genotyping was carried out by polymerase chain reaction-restriction fragment length polymorphism using the restriction enzyme HpaII. We excluded patients with diabetes mellitus, neurologic damage, and diuretic intake. RESULTS The subjects' mean (SD) age was 68.1 (6.5) years (range, 60-92 years). We found an association between the TT genotype versus CC + CT genotypes and UI (P = 0.013; odds ratio, 2.69; 95% confidence interval, 1.37-5.29) and, in addition, an association with urgency UI, maximal cystometric capacity (TT, 349 mL; CC + CT, 429.5 mL [P = 0.047]), detrusor pressure at maximum cystometric capacity (TT, 11 cm H(2)O; CC + CT, 6.75 cm H(2)O [P = 0.032]), and detrusor compliance (TT, 34 mL/cm H(2)O; CC + CT, 61.25 mL/cm H(2)O [P = 0.006]). CONCLUSIONS We confirmed our previous findings of a genetic influence of the TT genotype on UI involving the serotonergic pathway among older women. Further investigations including 5-HT(2A) expression in the bladder, pelvic floor, and striated sphincter muscle must be performed.
Collapse
|
35
|
Silva TSN, Machado DC, Viezzer C, Silva Júnior AN, Oliveira MGD. Effect of titanium surface roughness on human bone marrow cell proliferation and differentiation: an experimental study. Acta Cir Bras 2010; 24:200-5. [PMID: 19504002 DOI: 10.1590/s0102-86502009000300007] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2008] [Accepted: 03/18/2009] [Indexed: 12/11/2022] Open
Abstract
PURPOSE To assess the proliferation and differentiation of human bone marrow-derived cells cultured on titanium surfaces with different roughness characteristics. METHODS Cells obtained from the iliac crest of an adult human donor were routinely processed and cultured on titanium surfaces of varying roughness, according to their preparation method: polishing only (smooth surface) and polishing followed by etching with HF/HNO3 for 15 and 30 minutes (rough surfaces). Surfaces were assessed using scanning electronic microscopy and profilometry. RESULTS Titanium disks etched with acid for 15 minutes allowed greater cell proliferation in all culture periods. The level of osteopontin and osteocalcin expression was increased in both acid-etched groups, which indicates an advanced stage of differentiation of cells into osteoblasts. CONCLUSIONS Increased surface roughness accelerates the differentiation of undifferentiated mesenchymal cells into osteogenic lineage cells, but does not necessarily favor cell proliferation. An intermediate surface roughness of 0.5microm (acid etching for 15 minutes) favors both initial and final cell responses.
Collapse
|
36
|
Abstract
Loss of teeth is frequently associated with periodontal disease in older adults. The aim of this review was to present the effects of aging on the periodontal tissues. Aging alone does not lead to critical loss of periodontal attachment in healthy elderly persons. The effects of aging on periodontal tissues are based on molecular changes in the periodontal cells, which intensify bone loss in elderly patients with periodontitis. These effects may be associated with (1) alterations in differentiation and proliferation of osteoblasts and osteoclasts; (2) an increase in periodontal cell response to the oral microbiota and mechanical stress leading to the secretion of cytokines involved in osseous resorption; and (3) systemic endocrine alterations in the elderly people.
Collapse
Affiliation(s)
- Eder Abreu Huttner
- Laboratory of Biomedical Gerontology, Biomedical Research Institute, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | | | | | | | | |
Collapse
|
37
|
Franco Lambert AP, Fraga Zandonai A, Bonatto D, Cantarelli Machado D, Pêgas Henriques JA. Differentiation of human adipose-derived adult stem cells into neuronal tissue: does it work? Differentiation 2009; 77:221-8. [PMID: 19272520 DOI: 10.1016/j.diff.2008.10.016] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2008] [Revised: 10/03/2008] [Accepted: 10/09/2008] [Indexed: 01/13/2023]
Abstract
Adipose tissue contains many cells and proteins that are of value not only for their potential therapeutic applications, but also for the low cost of their harvest and delivery. Mesenchymal stem cells (MSC) were originally isolated from the bone marrow, although similar populations have been isolated from adipose and other tissues. At one time, neural tissues were not regarded as regenerative populations of cells. Therefore, the identification of cell populations capable of neuronal differentiation has generated immense interest. Adipose tissue may represent an alternative source of cells that are capable of neuronal differentiation, potentially enhancing its use in the treatment of neurological disease. The aim of this review is to cover the current state of knowledge of the differentiation potential of human adipose-derived stem (ADAS) cells, specifically their ability to give rise to neuronal cells in vitro. This review presents and discusses different protocols used for inducing human ADAS cells to differentiate in vitro, and the neuronal markers utilized in each system.
Collapse
Affiliation(s)
- Ana Paula Franco Lambert
- Departamento de Biofísica/Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, RS 91507-970, Brazil
| | | | | | | | | |
Collapse
|
38
|
Braga-Silva J, Gehlen D, Padoin AV, Machado DC, Garicochea B, Costa da Costa J. Can local supply of bone marrow mononuclear cells improve the outcome from late tubular repair of human median and ulnar nerves? J Hand Surg Eur Vol 2008; 33:488-93. [PMID: 18687837 DOI: 10.1177/1753193408090401] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The purpose of this non-randomised retrospective study was to compare nerve regeneration after reconnection with silicone tubes with two different strategies. A total of 44 patients with injured median or ulnar nerves in the forearm were surgically treated. In one group of patients, a silicone tube alone was placed in the nerve gap. In a second group, the silicone tube was filled with autologous bone marrow mononuclear cells obtained by aspiration from the iliac crest. Motor function, sensation and the effect of pain on function were assessed 1 year after surgery. The tubes filled with bone marrow cells showed better recovery than the empty tubes. The use of bone marrow mononuclear cells in addition to tube re-connection may promote better nerve regeneration than conventional tubular repair.
Collapse
Affiliation(s)
- J Braga-Silva
- Service of Hand Surgery and Reconstructive Microsurgery, Hospital São Lucas, Pontifical Catholic University of Rio Grande do Sul-Porto Alegre, Brazil.
| | | | | | | | | | | |
Collapse
|
39
|
Viegas VN, Abreu MER, Viezzer C, Machado DC, Filho MS, Silva DN, Pagnoncelli RM. Effect of Low-Level Laser Therapy on Inflammatory Reactions during Wound Healing: Comparison with Meloxicam. Photomed Laser Surg 2007; 25:467-73. [DOI: 10.1089/pho.2007.1098] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Vinicius Nery Viegas
- School of Dentistry, Laser Center, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Marcelo Emir Requia Abreu
- School of Dentistry, Laser Center, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Christian Viezzer
- Biomedical Researches Institute, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Denise Cantarelli Machado
- Biomedical Researches Institute, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Manoel Sant'Anna Filho
- School of Dentistry, Oral and Maxillofacial Surgery Department, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Daniela Nascimento Silva
- School of Dentistry, Oral and Maxillofacial Surgery Department, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Rogério Miranda Pagnoncelli
- School of Dentistry, Laser Center, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| |
Collapse
|
40
|
Corso AL, Pitrez PMC, Machado DC, Stein RT, Jones MH. TNF-a and IL-10 levels in tracheobronchial lavage of ventilated preterm infants and subsequent lung function. Braz J Med Biol Res 2007; 40:569-76. [PMID: 17401501 DOI: 10.1590/s0100-879x2007000400016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2006] [Accepted: 01/29/2007] [Indexed: 11/21/2022] Open
Abstract
The role of airway inflammation in ventilated preterm newborns and the risk factors associated with the development of chronic lung disease are not well understood. Our objective was to analyze the association of the airway inflammatory response in ventilated preterm infants by serial measurements of TNF-alpha and IL-10 in tracheobronchial lavage (TBL) with perinatal factors and lung function measured early in life. A series of TBL samples were collected from ventilated preterm infants (less than 32 weeks of gestational age) and concentrations of TNF-alpha and IL-10 were measured by ELISA. Pulmonary function tests were performed after discharge by the raised volume rapid compression technique. Twenty-five subjects were recruited and 70 TBL samples were obtained. There was a significant positive association between TNF-alpha and IL-10 levels and length of time between the rupture of the amniotic membranes and delivery (r = 0.65, P = 0.002, and r = 0.57, P < 0.001, respectively). Lung function was measured between 1 and 22 weeks of corrected age in 10 patients. Multivariable analysis with adjustment for differences in lung volume showed a significant negative association between TNF-alpha levels and forced expiratory flow (FEF(50); r = -0.6; P = 0.04), FEF(75) (r = -0.76; P = 0.02), FEF(85) (r = -0.75; P = 0.03), FEF(25-75) (-0.71; P = 0.02), and FEV(0.5) (r = -0.39; P = 0.03). These data suggest that TNF-alpha levels in the airways during the first days of life were associated with subsequent lung function abnormalities measured weeks or months later.
Collapse
Affiliation(s)
- A L Corso
- Departamento de Pediatria, Faculdade de Medicina, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | | | | | | | | |
Collapse
|
41
|
Maahs GS, Machado DC, Jeckel-Neto EA, Michaelses VS. Cyclin D1 expression and cervical metastases in squamous cell carcinoma of the mouth. Braz J Otorhinolaryngol 2007; 73:87-94. [PMID: 17505605 PMCID: PMC9443589 DOI: 10.1016/s1808-8694(15)31128-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2006] [Accepted: 11/02/2006] [Indexed: 11/24/2022] Open
Abstract
Summary Cervical metastasis represent the most relevant prognostic factor in carcinomas of the mouth. Clinical and histological factors are associated with the development of cervical metastasis; however, research on molecular factors has been broadly carried out in recent years. Aim The aim of this study is to analyze the association of the Cyclin D1 as a risk factor for the presence of cervical metastasis. Materials and Methods Cyclin D1 expression was measured and the association between such substance and metastasis was found in 45 patients with mouth cancer treated by the author of this paper. Cyclin D1 presence was checked through the stereological method. Clinical and histological characteristics have been analyzed and associated with metastasis. Results Cyclin D1 expression was found in 15 patients but it was not associated with clinical and histological factors related to the presence of metastasis. Such conclusion indicates that Cyclin D1 is an independent protein. The most important predictive aspects related to metastasis development have been clinical staging and vascular embolization. Conslusions Cyclin D1, although independent, is not associated with cervical metastasis, while staging and vascular embolization are.
Collapse
Affiliation(s)
- Gerson Schulz Maahs
- Otorhinolaryngology/Head and Neck Surgery Department, PUCRS, Porto Alegre, Brazil
| | | | | | | |
Collapse
|
42
|
Braga-Silva J, Gehlen D, Roman JA, Machado DC, Costa JCD, Faúndez M, Orsi VV, Braga R. Modelo experimental de lesão raquimedular em ratos com dispositivo para acesso de agentes terapêuticos locais. Acta ortop bras 2007. [DOI: 10.1590/s1413-78522007000300007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Um modelo experimental de lesão raquimedular com localização precisa e reproduzível é uma ferramenta extremamente importante para o estudo de novas terapias em lesões raquimedulares. OBJETIVOS: Desenvolver um modelo experimental de lesão raquimedular em ratos que produza lesão completa (paraplegia) com o posicionamento de um sistema que permita o acesso de agentes próximo ao local da lesão para testar agentes terapêuticos locais. MÉTODOS: Quinze ratos Wistar foram submetidos à transecção cirúrgica da medula espinhal, realizada com o uso de tesoura ao nível dos corpos vertebrais de T-13 a L-3 e, ao final do procedimento, à implantação de um cateter subcutâneo para o acesso de agentes terapêuticos locais ao local da lesão. RESULTADOS: Um modelo experimental de paraplegia foi consistentemente desenvolvido com a adição suplementar de um cateter para o acesso de agentes terapêuticos locais ao local da lesão. CONCLUSÃO: Um modelo animal de lesão raquimedular e um sistema para o acesso de agentes terapêuticos locais pode ser reproduzido para o estudo de diferentes modificadores da resposta regenerativa em um modelo de ratos com lesão raquimedular.
Collapse
|
43
|
Roth DM, Senna JPM, Machado DC. Evaluation of the humoral immune response in BALB/c mice immunized with a naked DNA vaccine anti-methicillin-resistant Staphylococcus aureus. Genet Mol Res 2006; 5:503-12. [PMID: 17117366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is the major pathogen involved in nosocomial infections, leading to high rates of morbidity and mortality in hospitals worldwide. The methicillin resistance occurs due to the presence of an additional penicillin-binding protein, PBP2a, which has low affinity for beta-lactam antibiotics. In the past few years, vancomycin has been the only antibiotic option for treatment of infections caused by multiresistant MRSA; however, reports of vancomycin-resistant strains have generated great concerns regarding the treatment to overcome these infections. In the present study, we report preliminary results regarding the humoral immune response generated in BALB/c mice by two different doses of naked DNA vaccine containing an internal region, comprising the serine-protease domain, of the PBP2a of MRSA. The immunization procedure consisted of four immunizations given intramuscularly within 15-day intervals. Blood was collect weekly and anti-PBP2a-specific antibodies were screened by ELISA. BALB/c mice immunized with DNA vaccine anti-PBP2a have shown higher antibody titers mainly after the fourth immunization, and intriguingly, no correlation between the humoral immune response and DNA dose was observed. Our results suggest that the DNA vaccine anti-PBP2a induced an immune response by production of specific antibodies anti-MRSA in a non-dose-dependent manner, and it could represent a new and valuable approach to produce specific antibodies for passive immunization to overcome MRSA infections.
Collapse
Affiliation(s)
- D M Roth
- Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia.
| | | | | |
Collapse
|
44
|
Braga-Silva J, Gehlen D, Roman JA, Menta C, Atkinson EDA, Machado DC, Viezzer C, Barbosa GL, Baes CVW, Silva VD, Costa JCD. Efeitos das células tronco adultas de medula óssea e do plasma rico em plaquetas na regeneração e recuperação funcional nervosa em um modelo de defeito agudo em nervo perfiférico em rato. Acta ortop bras 2006. [DOI: 10.1590/s1413-78522006000500009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJETIVOS: Foram avaliados os efeitos do uso de células tronco da medula óssea (CTM) e do plasma rico em plaquetas (PRP) na regeneração de nervos periféricos, utilizando um modelo estabelecido de regeneração de nervo ciático em ratos. MÉTODOS: Um defeito nervoso de 10 mm foi reconstruído com a utilização de um tubo de silicone preenchido com CTM, PRP ou ambos. O grupo controle recebeu somente o tubo de silicone. Foi realizado ainda um quinto grupo no qual o intervalo foi reconstruído utilizando o segmento ressecado do nervo. A função motora foi testada seis semanas após a cirurgia utilizando teste de marcha. Após o teste motor, os ratos foram anestesiados, o nervo ciático e o tubo foram ressecados e foi realizada microscopia eletrônica de transmissão. RESULTADOS: A análise quantitativa demonstra uma melhora na recuperação funcional no grupo CTM em comparação com os demais grupos. Regeneração nervosa foi demonstrada no grupo CTM por microscopia eletrônica de trasmissão com uma recuperação praticamente completa da anatomia neural. CONCLUSÃO: Nossos resultados sugerem que o uso de CTM associado com a técnica de tubulização promove uma satisfatória recuperação da função motora e regeneração nervosa.
Collapse
|
45
|
Grando LJ, Machado DC, Spitzer S, Nachman S, Ferguson F, Berentsen B, Yurgel LS. Viral coinfection in the oral cavity of HIV-infected children: relation among HIV viral load, CD4+T lymphocyte count and detection of EBV, CMV and HSV. Braz Oral Res 2005; 19:228-34. [PMID: 16308613 DOI: 10.1590/s1806-83242005000300013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Viral coinfection in the oral cavity associated to HIV infection was evaluated in 180 children from birth to 13 years of age of both sexes. The oral examinations were performed at the Pediatric AIDS Outpatient Clinic, São Lucas Hospital and Clinic Hospital, both in Porto Alegre, Brazil and at the School of Dental Medicine, University Hospital Center, State University of New York at Stony Brook, USA. The aim of this study was to identify the presence of viral infections in the oral cavity. PCR technique was used to determine opportunistic viral infections caused by CMV, EBV, and HSV in mucosal swabs. A high frequency of viral infection was detected in the oral cavity of HIV-infected children determined by the PCR technique. HIV-infected children with viruses had a favorable CD4+T lymphocyte count and unfavorable viral load.
Collapse
|
46
|
Pitrez PMC, Machado DC, Jones MH, Andrade F, Camozzato C, Stein RT. Th-1 and Th-2 cytokine production in infants with virus-associated wheezing. Braz J Med Biol Res 2005; 38:51-4. [PMID: 15665988 DOI: 10.1590/s0100-879x2005000100008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Wheezing associated with respiratory viral infections in infancy is very common and results in high morbidity worldwide. The Th1/Th2 pattern of immune response in these patients remains unclear and previous studies have shown controversial results. The aim of the present study was to compare the type of Th1/Th2 cytokine response between infants with acute bronchiolitis, recurrent wheezing and upper respiratory infections from a developing country. Infants younger than 2 years of age admitted to Hospital São Lucas, Porto Alegre, RS, Brazil, between May and November 2001, with an acute episode of wheezing associated with viral respiratory infection were selected. Subjects with upper respiratory infections from the emergency department were selected for the control group. Interferon-gamma (IFN-gamma) and interleukin-4 (IL-4) levels from nasal aspirates were determined by ELISA from peripheral mononuclear cell cultures. Twenty-nine subjects with acute bronchiolitis, 18 with recurrent wheezing and 15 with upper respiratory infections were enrolled. There were no differences in family history of atopy or parental smoking between groups. Oxygen requirement was similar for the acute bronchiolitis and recurrent wheezing groups. The percentage of positive tests for the cytokines studied and the IFN-gamma/IL-4 ratio was similar for all groups. Comparison of the polarized Th1/Th2 cytokine results for the various groups showed no specific pattern of cytokine production. Infants with wheezing from a developing country do not show any specific predominant pattern of Th1/Th2 cytokine production, suggesting that multiple factors may be involved in the pathogenesis of this illness.
Collapse
Affiliation(s)
- P M C Pitrez
- Laboratório de Pediatria e Neonatologia, Departamento de Pediatria, Instituto de Pesquisas Biomédicas, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
| | | | | | | | | | | |
Collapse
|
47
|
Pinto LA, Pitrez PMC, Fontoura GR, Machado DC, Jones MH, Graeff-Teixeira C, Stein RT. Infection of BALB/c mice with Angiostrongylus costaricensis decreases pulmonary inflammatory response to ovalbumin. Parasite Immunol 2004; 26:151-5. [PMID: 15279626 DOI: 10.1111/j.0141-9838.2004.00694.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
SUMMARY The prevalence of asthma in developing countries is lower than in developed countries. Viral, bacterial and parasitic infections may be associated with this discrepancy. The relationship between parasitic infection and asthma prevalence is not clear. Previous controversial data have demonstrated that parasitic infection may either predispose or protect against the development of asthma. The aim of this study is to determine whether infection with Angiostrongylus costaricensis (A. costaricensis) decreases inflammatory lung response to ovalbumin (OVA) in mice. Seven BALB/c mice were infected with A. costaricensis by orogastric gavage (10 larvae/mouse) on day (D) 0. The mice were immunized against OVA by intraperitoneal injection on D 5 and D 12 and received an intranasal OVA challenge (40 micro L) on D 15 and D 17. On D 19 bronchoalveolar lavage (BAL) was performed. Six BALB/c mice (control group) were immunized with OVA using the same protocol, but were not infected with A. costaricensis. Interleukin (IL)-1beta and IL-6 levels were measured in the BAL fluid by using commercial ELISA assays. Total cell counts and differential cell counts were performed in the BAL fluid samples. The group infected with A. costaricensis had lower total cell count in the BAL fluid when compared with the control group (0.11 x 10(6)cells/mL and 0.3 x 10(6)cells/mL, respectively; P = 0.013). BAL fluid IL-1beta levels in the infected group were significantly lower than in the control group (P = 0.008). IL-6 levels in BAL fluid were not different between the groups studied. We conclude that Angiostrongylus costaricensis infection in mice decreases pulmonary inflammatory response to OVA.
Collapse
Affiliation(s)
- L A Pinto
- Instituto de Pesquisas Biomédicas/Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alagre, Brazil
| | | | | | | | | | | | | |
Collapse
|
48
|
Pitrez PMC, Ponzi D, Machado DC, Bauer ME, Jones MH, Stein RT. Discrepancy between cytokine production from peripheral blood mononuclear cells and nasal secretions among infants with acute bronchiolitis. Ann Allergy Asthma Immunol 2004; 92:659-62. [PMID: 15237768 DOI: 10.1016/s1081-1206(10)61433-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Many studies have measured cytokine production derived from peripheral blood mononuclear cells (PBMCs) to evaluate the immune response in acute bronchiolitis (AB), but no previous reports have examined the association between PBMC release of cytokines and concomitant airway immune response. OBJECTIVE To determine whether interferon-gamma (IFN-gamma), interleukin 4 (IL-4), and IL-10 levels from PBMCs are associated with concurrent cytokine release in the airways of infants with AB. METHODS Infants with acute viral-associated first episode of wheezing who required hospitalization between May and September 2002 were recruited. Nasopharyngeal aspirates (NPAs) and PBMC samples were collected simultaneously. The concentrations of IFN-gamma, IL-4, and IL-10 in NPA and PBMC supernatants were determined by enzyme-linked immunosorbent assay. RESULTS Twenty infants with AB were enrolled in the study of whom 17 (85%) had positive NPA immunofluorescence results for viral detection and respiratory syncytial virus. Median total cell count and viability from NPA samples were 2.2 x 10(6) cells/mL (SD, 1.7 cells/mL) and 92% (SD, 6.0%), respectively. There was a significant correlation between IL-4 levels from NPA and PBMC samples (r = 0.5, P = .02); however, we did not find an association between IFN-gamma and IL-10 levels. CONCLUSIONS Cytokines produced by in vitro PBMCs may not necessarily reflect the concurrent cytokine pattern production at the mucosal surface in the respiratory tract of infants with AB. Further studies are required to determine whether peripheral blood is a reliable sample for airway inflammation evaluation and to explain the discrepancies of cytokine productions found in this study.
Collapse
|
49
|
Pinto LA, Camozzato C, Avozani M, Machado DC, Jones MH, Stein RT, Pitrez PMC. Effect of clarithromycin on the cell profile of bronchoalveolar lavage fluid in mice with neutrophil-predominant lung disease. ACTA ACUST UNITED AC 2004; 59:99-103. [PMID: 15286828 DOI: 10.1590/s0041-87812004000300002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Macrolide antibiotics have anti-inflammatory properties in lung diseases. The aim of this study was to investigate the effect of clarithromycin in pulmonary cellular inflammatory response in mice. METHOD Eight adult Swiss mice were studied. All animals received an intranasal challenge (80 micro L) with dead Pseudomonas aeruginosa (1.0 x 10(12) CFU/mL). Bronchoalveolar lavage was performed 2 days later, with total cell count and differential cell analysis. The study group (n = 4) received clarithromycin treatment (50 mg/kg/day, intraperitoneal) for 5 days. Treatment was initiated 2 days before intranasal challenge. RESULTS There was no significant difference in total cell count between the groups (mean: 2.0 x 10(6) and 1.3 x 10(6), respectively). In both groups, there was a predominance of neutrophils. However, the study group had a higher percentage of lymphocytes in the bronchoalveolar lavage than the control group (median of 19% vs 2.5%, P =.029). CONCLUSION Clarithromycin alters the cytological pattern of bronchoalveolar lavage of Swiss mice with neutrophil pulmonary inflammation, significantly increasing the percentage of lymphocytes.
Collapse
Affiliation(s)
- Leonardo Araújo Pinto
- Department of Pediatrics, São Lucas Hospital, Pontifícia Universidade Católica of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | | | | | | | | | | | | |
Collapse
|
50
|
Barbé-Tuana FM, Machado DC, Saitovitch D. Modified location of the major histocompatibility protein Kb by co-delivery with VP22 protein. ACTA ACUST UNITED AC 2004; 21:27-31. [PMID: 14715317 DOI: 10.1016/s1389-0344(03)00030-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We report the construction of an expression vector pVP22::Kb that encodes a chimeric protein composed of VP22 and murine major histocompatibility complex class I molecule, Kb. Flow cytometry assays show that VP22 modifies normal cell surface localization of Kb protein.
Collapse
Affiliation(s)
- Florencia María Barbé-Tuana
- Programa de Pós-Graduação em Ciências Médicas: Nefrologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | | | | |
Collapse
|