1
|
Maia RDCA, Lima TC, Barbosa CM, Barbosa MA, de Queiroz KB, Alzamora AC. Intergenerational inheritance induced by a high-fat diet causes hyperphagia and reduced hypothalamic sensitivity to insulin and leptin in the second-generation of rats. Nutrition 2024; 120:112333. [PMID: 38271759 DOI: 10.1016/j.nut.2023.112333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 11/16/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024]
Abstract
OBJECTIVE The aim was to investigate the intergenerational inheritance induced by a high-fat diet on sensitivity to insulin and leptin in the hypothalamic control of satiety in second-generation offspring, which were fed a control diet. METHODS Progenitor rats were fed a high-fat or a control diet for 59 d until weaning. The first-generation and second-generation offspring were fed the control diet until 90 d of age. Body mass and adiposity index of the progenitors fed the high-fat diet and the second-generation offspring from progenitors fed the high-fat diet were evaluated as were the gene expression of DNA methyltransferase 3a, angiotensin-converting enzyme type 2, angiotensin II type 2 receptor, insulin and leptin signaling pathway (insulin receptor, leptin receptor, insulin receptor substrate 2, protein kinase B, signal transducer and transcriptional activator 3, pro-opiomelanocortin, and neuropeptide Agouti-related protein), superoxide dismutase activity, and the concentration of carbonyl protein and satiety-regulating neuropeptides, pro-opiomelanocortin and neuropeptide Agouti-related protein, in the hypothalamus. RESULTS The progenitor group fed a high-fat diet showed increased insulin resistance and reduced insulin-secreting beta-cell function and reduced food intake, without changes in caloric intake. The second-generation offspring from progenitors fed a high-fat diet, compared with second-generation offspring from progenitors fed a control diet group, had decreased insulin-secreting beta-cell function and increased food and caloric intake, insulin resistance, body mass, and adiposity index. Furthermore, second-generation offspring from progenitors fed a high-fat diet had increased DNA methyltransferase 3a, neuropeptide Agouti-related protein, angiotensin II type 1 receptor, and nicotinamide adenine dinucleotide phosphate oxidase p47phox gene expression, superoxide dismutase activity, and neuropeptide Agouti-related protein concentration in the hypothalamus. In addition, there were reduced in gene expression of the insulin receptor, leptin receptor, insulin receptor substrate 2, pro-opiomelanocortin, angiotensin II type 2 receptor, angiotensin-converting enzyme type 2, and angiotensin-(1-7) receptor and pro-opiomelanocortin concentration in the second-generation offspring from progenitors fed the high-fat diet. CONCLUSIONS Overall, progenitors fed a high-fat diet induced changes in the hypothalamic control of satiety of the second-generation offspring from progenitors fed the high-fat diet through intergenerational inheritance. These changes led to hyperphagia, alterations in the hypothalamic pathways of insulin, and leptin and adiposity index increase, favoring the occurrence of different cardiometabolic disorders in the second-generation offspring from progenitors fed the high-fat diet fed only with the control diet.
Collapse
Affiliation(s)
- Rosana da Conceição Araújo Maia
- Núcleo de Pesquisa em Ciências Biológicas, Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Taynara Carolina Lima
- Núcleo de Pesquisa em Ciências Biológicas, Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Claudiane Maria Barbosa
- Núcleo de Pesquisa em Ciências Biológicas, Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Maria Andréa Barbosa
- Núcleo de Pesquisa em Ciências Biológicas, Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Karina Barbosa de Queiroz
- Departamento de Alimentos, Escola de Nutrição, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Andréia Carvalho Alzamora
- Núcleo de Pesquisa em Ciências Biológicas, Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Brazil; Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Brazil.
| |
Collapse
|
2
|
Barbosa CM, Lima TC, Barbosa MA, Rezende A, Carneiro CM, Silva SDQ, Itabaiana YA, Carvalho Alzamora A. Progenitor with cardiometabolic disorders increases food intake, systemic inflammation and gut microbiota alterations in the second generation offspring. Food Funct 2022; 13:8685-8702. [DOI: 10.1039/d1fo02838c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work presents the effects of the high-fat diet (H) consumed by the progenitor (G0) on cardiometabolic disorders and on intestinal microbiota in the second generation ofspring (F2). Rats submitted...
Collapse
|
3
|
Junior FJ, Scharff IC, Paulo LD, Oliveira AN, Zanella CYS, Macêdo RBF, Barbosa CM, Mileo MG, Almeida GE, Scharff IC, Scharff IC. DIAGNÓSTICO HEMATOLÓGICO EM PACIENTE INTERNADO POR COVID-19 COM SINTOMAS NEUROPSIQUIATRICOS. Hematol Transfus Cell Ther 2021. [PMCID: PMC8530603 DOI: 10.1016/j.htct.2021.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Introdução Anemias carenciais são patologias de alta prevalência dentre as doenças da série vermelha, o qual a Deficiência de Vitamina B12 se destaca na sua pluralidade de sintomas clínicos. Objetivos Relatar caso de paciente internada por Covid-19 com quadro clínico grave de anemia, paraparesia e psicose por Deficiência de B12. Relato de caso Paciente sexo Feminino, 45 anos, sem comorbidades prévias, internada em junho/2021 em enfermaria Covid-19 devido sintomas respiratórios altos com teste Rápido sorológico por método imunocromatográfico positivo. Iniciou há 08 meses quadro progressivo de astenia, parestesia de membros inferiores, evoluindo progressivamente para paraparesia, associado nos últimos 02 meses com quadro de embotamento, alucinações visuais e sonoras, déficit cognitivo e retenção urinária. Em hemograma prévio a internação apresenta resultado: HB 6,0. Ht 17,9%, VCM 111,9. HCM 37,5; CHCM 37,5; RDW 18,5%; Leucócitos: 2800; BAST: 2%; SEGMEN: 40%; LINF 56%; EOSI 1%; MONO: 1%; PLAQ 149.000; DHL 1.920U/L; PCR 12,7. FERRITINA 339 ALT: 23, AST: 31. MAGNÉSIO 1,7. SÓDIO 146. POTASSIO 4,5; FOSFORO 3,49; CALCIO TOTAL: 8,61; CLORO: 98; UREIA 25. CREAT 0,46. Foi solicitado dosagem de VIT B12 e ácido fólico, demonstrado seguintes resultados: Acido fólico sérico >20 ng/mL. Vitamina B12 sérica: < 50,00 pg/mL. Foi iniciado reposição na primeira semana com Cobalamina 15.000ui divididas em 03 doses em dias alternados, posteriormente com 5.000ui/semana. Sua resposta ao tratamento na primeira semana foi a normalização da contagem de plaquetas e de leucócitos (177.000 e 5050 respectivamente), melhora dos sintomas psiquiátricos e neuro cognitivo, e breve melhora da parestesia e paraparesia de membros inferiores. A paciente foi encaminhada para Endoscopia Digestiva Alta e Ressonância Magnética de Coluna Lombossacra em sua alta da enfermaria Covid-19 para investigação etiológica Discussão Diante do contexto da Pandemia Covid-19, a investigação de sinais e sintomas clínicos não compatíveis com a infecção em uma internação, torna-se importante para o atendimento integral ao paciente, reconhecendo e investigando diagnósticos diferenciais que podem coexistir. Em meio aos sintomas psiquiátricos e neurológicos, a investigação de Deficiência de Vitamina B12 entra como importante hipótese diagnóstica diante de alterações hematológicas associado ao quadro clínico. Conclusão no contexto da Pandemia, vários diagnósticos podem ser elucidados em meio a coexistência de infecção por Covid-19.
Collapse
|
4
|
Barbosa CM, Maia ACD, Martel C, Regueira JCS, Navarro DMDAF, Raguso RA, Milet-Pinheiro P, Machado IC. Reproductive biology of Syagrus coronata (Arecaceae): sex-biased insect visitation and the unusual case of scent emission by peduncular bracts. Plant Biol (Stuttg) 2021; 23:100-110. [PMID: 32757308 DOI: 10.1111/plb.13162] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 07/16/2020] [Indexed: 06/11/2023]
Abstract
Several monoecious species of palms have developed complex strategies to promote cross-pollination, including the production of large quantities of floral resources and the emission of scents that are attractive to pollinators. Syagrus coronata constitutes an interesting model with which to understand the evolution of plant reproductive strategies in a monoecious species adapted to seasonally dry forests. We monitored blooming phenology over 1 year, during which we also collected and identified floral visitors and putative pollinators. We identified potential floral visitor attractants by characterizing the scent composition of inflorescences as well as of peduncular bracts, during both male and female phases, and the potential for floral thermogenesis. Syagrus coronata produces floral resources throughout the year. Its inflorescences are predominantly visited by a diverse assortment of small-sized beetles, whose richness and abundance vary throughout the different phases of anthesis. We did not find evidence of floral thermogenesis. A total of 23 volatile compounds were identified in the scent emitted by the inflorescences, which did not differ between male and female phases; whereas the scent of the peduncular bracts was composed of only 4-methyl guaiacol, which was absent in inflorescences. The composition of floral scent chemistry indicates that this palm has evolved strategies to be predominantly pollinated by small-sized weevils. Our study provides rare evidence of a non-floral scent emitting structure involved in pollinator attraction, only the second such case specifically in palms. The peculiarities of the reproductive strategy of S. coronata might play an important role in the maintenance of pollination services and pollen dispersion.
Collapse
Affiliation(s)
- C M Barbosa
- Departament of Botany, Programa de Pós-Graduação em Biologia Vegetal, Universidade Federal de Pernambuco, Recife, Brazil
| | - A C D Maia
- Departament of Systematics and Ecology, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - C Martel
- Instituto de Ciencias Ómicas y Biotecnología Aplicada, Pontificia Universidad Católica del Perú, Av. Universitaria 1801, San Miguel 15088, Lima, Peru
| | - J C S Regueira
- Department of Zoology, Laboratório de Taxonomia e Ecologia de Insetos, Universidade Federal de Pernambuco, Recife, Brazil
| | - D M do A F Navarro
- Department of Fundamental Chemistry, Universidade Federal de Pernambuco, Recife, Brazil
| | - R A Raguso
- Department of Neurobiology and Behavior, Cornell University, Ithaca, New York, USA
| | - P Milet-Pinheiro
- Departament of Botany, Programa de Pós-Graduação em Biologia Vegetal, Universidade Federal de Pernambuco, Recife, Brazil
| | - I C Machado
- Departament of Botany, Programa de Pós-Graduação em Biologia Vegetal, Universidade Federal de Pernambuco, Recife, Brazil
| |
Collapse
|
5
|
de Sousa GG, Barbosa MA, Barbosa CM, Lima TC, Souza Dos Santos RA, Campagnole-Santos MJ, Alzamora AC. Different reactive species modulate the hypotensive effect triggered by angiotensins at CVLM of 2K1C hypertensive rats. Peptides 2020; 134:170409. [PMID: 32950566 DOI: 10.1016/j.peptides.2020.170409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 08/20/2020] [Accepted: 09/15/2020] [Indexed: 11/18/2022]
Abstract
Hypertension is associated with increased central activity of the renin-angiotensin system (RAS) and oxidative stress. Here, we evaluated whether reactive species and neurotransmitters could contribute to the hypotensive effect induced by angiotensin (Ang) II and Ang-(1-7) at the caudal ventrolateral medulla (CVLM) in renovascular hypertensive rats (2K1C). Therefore, we investigated the effect of Ang II, Ang-(1-7), and the Ang-(1-7) antagonist A-779 microinjected before and after CVLM microinjection of the nitric oxide (NO)-synthase inhibitor, (L-NAME), vitamin C (Vit C), bicuculline, or kynurenic acid in 2K1C and SHAM rats. Baseline values of the mean arterial pressure (MAP) in 2K1C rats were higher than in SHAM rats. CVLM microinjection of Ang II, Ang-(1-7), l-NAME, or bicuculline induced decreases in the MAP in SHAM and 2K1C rats. In addition, Vit C and A-779 produced decreases in the MAP only in 2K1C rats. Kynurenic acid increased the MAP in both SHAM and 2K1C rats. Only the Ang-(1-7) effect was increased by l-NAME and reduced by bicuculline in SHAM rats. L-NAME also reduced the A-779 effect in 2K1C rats. Only the Ang II effect was abolished by CVLM Vit C and enhanced by CVLM kynurenic acid in SHAM and 2K1C rats. Overall, the superoxide anion and glutamate participated in the hypotensive effect of Ang II, while NO and GABA participated in the hypotensive effect of Ang-(1-7) in CVLM. The higher hypotensive response of A-779 in the CVLM of 2K1C rats suggests that Ang-(1-7) contributes to renovascular hypertension.
Collapse
Affiliation(s)
- Graziele Galdino de Sousa
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Maria Andréa Barbosa
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Claudiane Maria Barbosa
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Taynara Carolina Lima
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Robson Augusto Souza Dos Santos
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Maria José Campagnole-Santos
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Andréia Carvalho Alzamora
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Brazil; Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil.
| |
Collapse
|
6
|
Barbosa MA, Barbosa CM, Lima TC, dos Santos RAS, Alzamora AC. The Novel Angiotensin-(1-7) Analog, A-1317, Improves Insulin Resistance by Restoring Pancreatic β-Cell Functionality in Rats With Metabolic Syndrome. Front Pharmacol 2020; 11:1263. [PMID: 32982727 PMCID: PMC7476374 DOI: 10.3389/fphar.2020.01263] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 07/30/2020] [Indexed: 01/03/2023] Open
Abstract
In previous studies we have shown that oral Ang-(1-7) has a beneficial therapeutic effect on cardiometabolic disturbances present in metabolic syndrome (MetS). Based on the fact that Ang-(1-7) acts through release of nitric oxide (NO), a new peptide, A-1317 was engineered adding the amino acid L-Arginine, the NO precursor, to the N-terminal portion of the Ang-(1-7). Therefore, in a single molecule the substrate and the activator of NO are combined. In the present study, we evaluated the effect of A-1317 oral treatment on liver-glucose metabolism in MetS induced by high fat (HF) diet in rats. Rats were subjected to control (AIN-93M, CT) or HF diets for 15 weeks to induce MetS and treated with A-1317, Ang-(1-7) included into hydroxypropyl-β-cyclodextrin (HPβCD) or empty HPβCD (E), in the last 7 weeks. At the end of 15 weeks, hemodynamic, biometric, and biochemical parameters, redox process, and qRT-PCR gene expression of NO synthase and RAS components were evaluated in the liver. HF/E rats increased body mass gain, adiposity index, despite the reduction in food intake, increased plasma leptin, total cholesterol, triglycerides, ALT, fasting blood glucose, OGTT and insulin, HOMA-IR and MAP and HR. Furthermore, the MetS rats presented increased in liver angiotensinogen, AT1R, ACE mRNA gene expression and concentration of MDA and carbonylated protein. Both Ang-(1-7) and A-1317 oral treatment in MetS rats reverted most of these alterations. However, A-1317 was more efficient in reducing body mass gain, ALT, AST, total cholesterol, insulin, fasting blood glucose, ameliorating β cell capacity by increasing HOMA-β and QUICKI, whereas Ang-(1-7) reduced HOMA-β and QUICKI. In addition, Ang-(1-7) increased Mas and AKT liver mRNA gene expression, while A-1317 increased both Mas and MRGD and AMPK liver mRNA gene expression, suggesting a distinct pathway of action of Ang-(1-7) and A-1317 in MetS rats. Taken together, our data showed that treatment with A-1317 was able to ameliorate MetS disorders and suggested that this effect was mainly via MRGD via activation of AMPK and increasing β cell function.
Collapse
Affiliation(s)
- Maria Andréa Barbosa
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Claudiane Maria Barbosa
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Taynara Carolina Lima
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | | | - Andréia Carvalho Alzamora
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Ouro Preto, Brazil
| |
Collapse
|
7
|
Gomes B, Leite AM, Dutra GP, Grubert CS, Avila LPB, Paula SAM, Mendes BFS, Barbosa WM, Barbosa CM, Neves VV, D'Elia VC, Watanabe CA, Amorim GHO, Luiz RR, Petriz JLP. P6424Which hematimetric parameter generates more impact on mortality after an acute coronary syndrome? Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- B Gomes
- Hospital Barra D'or, Rio de Janeiro, Brazil
| | - A M Leite
- Hospital Barra D'or, Rio de Janeiro, Brazil
| | - G P Dutra
- Hospital Barra D'or, Rio de Janeiro, Brazil
| | | | | | | | | | | | | | - V V Neves
- Hospital Barra D'or, Rio de Janeiro, Brazil
| | - V C D'Elia
- Hospital Barra D'or, Rio de Janeiro, Brazil
| | | | | | - R R Luiz
- D'Or Institute for Research and Education, Rio de Janeiro, Brazil
| | | |
Collapse
|
8
|
Novak GV, Molinari BC, Ferreira JC, Sakamoto AP, Terreri MT, Pereira RMR, Saad-Magalhães C, Aikawa NE, Campos LM, Len CA, Appenzeller S, Ferriani VP, Silva MF, Oliveira SK, Islabão AG, Sztajnbok FR, Paim LB, Barbosa CM, Santos MC, Bica BE, Sena EG, Moraes AJ, Rolim AM, Spelling PF, Scheibel IM, Cavalcanti AS, Matos EN, Robazzi TC, Guimarães LJ, Santos FP, Silva CT, Bonfá E, Silva CA. Characteristics of 1555 childhood-onset lupus in three groups based on distinct time intervals to disease diagnosis: a Brazilian multicenter study. Lupus 2018; 27:1712-1717. [PMID: 30020023 DOI: 10.1177/0961203318787037] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Objective The objective of this study was to compare demographic data, clinical/laboratorial features and disease activity at diagnosis in three different groups with distinct time intervals between onset of signs/symptoms and disease diagnosis. Methods A multicenter study was performed in 1555 childhood-onset systemic lupus erythematosus (American College of Rheumatology criteria) patients from 27 pediatric rheumatology services. Patients were divided into three childhood-onset systemic lupus erythematosus groups: A: short time interval to diagnosis (<1 month); B: intermediate time interval (≥1 and <3 months); and C: long time interval (≥3 months). An investigator meeting was held to define the protocol. Demographic data, SLICC classification criteria and SLEDAI-2 K were evaluated. Results The number of patients in each group was: A = 60 (4%); B = 522 (33.5%); and C = 973 (62.5%). The median age at diagnosis (11.1 (4.2-17) vs. 12 (1.9-17.7) vs. 12.5 (3-18) years, P = 0.025) was significantly lower in group A compared with groups B and C. The median number of diagnostic criteria according to SLICC (7 (4-12) vs. 6 (4-13) vs. 6 (4-12), P < 0.0001) and SLEDAI-2 K (18 (6-57) vs. 16 (2-63) vs. 13 (1-49), P < 0.0001) were significantly higher in group A than the other two groups. The frequency of oral ulcers in the palate (25% vs. 15% vs. 11%, P = 0.003), pleuritis (25% vs. 24% vs. 14%, P < 0.0001), nephritis (52% vs. 47% vs. 40%, P = 0.009), neuropsychiatric manifestations (22% vs. 13% vs. 10%, P = 0.008), thrombocytopenia (32% vs. 18% vs. 19%, P = 0.037), leucopenia/lymphopenia (65% vs. 46% vs. 40%, P < 0.0001) and anti-dsDNA antibodies (79% vs. 66% vs. 61%, P = 0.01) were significantly higher in group A compared with the other groups. In contrast, group C had a less severe disease characterized by higher frequencies of synovitis (61% vs. 66% vs. 71%, P = 0.032) and lower frequencies of serositis (37% vs. 33% vs. 25%, P = 0.002), proteinuria >500 mg/day (48% vs. 45% vs. 36%, P = 0.002) and low complement levels (81% vs. 81% vs. 71%, P < 0.0001) compared with groups A or B. Conclusions Our large Brazilian multicenter study demonstrated that for most childhood-onset systemic lupus erythematosus patients, diagnosis is delayed probably due to mild disease onset. Conversely, the minority has a very short time interval to diagnosis and a presentation with a more severe and active multisystemic condition.
Collapse
Affiliation(s)
- G V Novak
- 1 Pediatric Rheumatology Unit, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - B C Molinari
- 1 Pediatric Rheumatology Unit, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - J C Ferreira
- 1 Pediatric Rheumatology Unit, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - A P Sakamoto
- 2 Pediatric Rheumatology Unit, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
| | - M T Terreri
- 2 Pediatric Rheumatology Unit, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
| | - R M R Pereira
- 3 Division of Rheumatology, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - C Saad-Magalhães
- 4 Pediatric Rheumatology Division, Sao Paulo State University (UNESP), Botucatu, Brazil
| | - N E Aikawa
- 1 Pediatric Rheumatology Unit, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
- 3 Division of Rheumatology, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - L M Campos
- 1 Pediatric Rheumatology Unit, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - C A Len
- 2 Pediatric Rheumatology Unit, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
| | - S Appenzeller
- 5 Pediatric Rheumatology Unit, University of Campinas (UNICAMP), Campinas, Brazil
| | - V P Ferriani
- 6 Pediatric Rheumatology Unit, University of Sao Paulo, Ribeirão Preto, Brazil
| | - M F Silva
- 7 Pediatric Rheumatology Unit, Hospital Geral de Fortaleza, Fortaleza, Brazil
| | - S K Oliveira
- 8 Pediatric Rheumatology Unit, Rio de Janeiro Federal University (IPPMG-UFRJ), Rio de Janeiro, Brazil
| | - A G Islabão
- 9 Pediatric Rheumatology Unit, Hospital Jose Alencar, Brasília, Brazil
| | - F R Sztajnbok
- 10 Pediatric Rheumatology Unit, Pedro Ernesto University Hospital, Rio de Janeiro, Brazil
| | - L B Paim
- 11 Pediatric Rheumatology Unit, Albert Sabin Children's Hospital, Fortaleza, Brazil
| | - C M Barbosa
- 12 Pediatric Rheumatology Unit, Hospital Darcy Vargas, Sao Paulo, Brazil
| | - M C Santos
- 13 Pediatric Rheumatology Unit, Irmandade da Santa Casa de Misericórdia de Sao Paulo, Sao Paulo, Brazil
| | - B E Bica
- 14 Rheumatology Division, Hospital Universitário Clementino Fraga Filho, Rio de Janeiro, Brazil
| | - E G Sena
- 15 Pediatric Rheumatology Unit, Lauro Vanderley University Hospital, João Pessoa, Brazil
| | - A J Moraes
- 16 Pediatric Rheumatology Unit, Federal University of Pará, Belém, Brazil
| | - A M Rolim
- 17 Pediatric Rheumatology Unit, Obras Sociais Irmã Dulce, Salvador, Brazil
| | - P F Spelling
- 18 Pediatric Rheumatology Unit, Hospital Evangélico de Curitiba, Curitiba, Brazil
| | - I M Scheibel
- 19 Pediatric Rheumatology Unit, Hospital Criança Conceição, Porto Alegre, Brazil
| | - A S Cavalcanti
- 20 Pediatric Rheumatology Unit, Federal University of Pernambuco, Recife, Brazil
| | - E N Matos
- 21 Pediatric Rheumatology Unit, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - T C Robazzi
- 22 Pediatric Rheumatology Unit, Federal University of Bahia, Salvador, Brazil
| | - L J Guimarães
- 23 Pediatric Rheumatology Unit, University of Brasilia, Brasília, Brazil
| | - F P Santos
- 24 Pediatric Rheumatology Unit, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - C T Silva
- 25 Pediatric Rheumatology Unit, Hospital Municipal Piedade, Rio de Janeiro, Brazil
| | - E Bonfá
- 3 Division of Rheumatology, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - C A Silva
- 1 Pediatric Rheumatology Unit, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
- 3 Division of Rheumatology, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| |
Collapse
|
9
|
Araujo CPB, Frota AVVM, Souza CPD, Souto MVM, Barbosa CM. Addition of a Second Metal (Co) to Molybdenum Carbide: Effect of the Doping Route. J Nanosci Nanotechnol 2018; 18:2203-2209. [PMID: 29448747 DOI: 10.1166/jnn.2018.14232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Molybdenum carbide is an interesting and versatile material, which has important applications in the metal matrix industry as a reinforcement material, as well as in the catalytic field. Though many papers suggest different methodologies for adding cobalt to the carbide structure aiming either to increase catalytic activity or enhancing mechanical proprieties such as ductility, etc. no straightforward evaluation is available. In the present paper two doping methodologies were studied: via solid state mixture of powders and via wet impregnation. Ammonium molybdate [(NH4)2MoO4] and cobalt nitrate [Co(NO3)2·6H2O] were used as starting materials and the doping process was carried out before carburization reaction. Those materials were characterized by FT-IR, SEM, XRF and XRD. The carbo-reduction products' were evaluated on XRD and XRF basis. Doped precursors' evaluation showed that the wet impregnated doped materials presented smaller particle sizes, were more homogeneous and retained more cobalt than the solid state doped ones. However, final products' assessment indicated that the solid state methodology was able to retain a greater dopant percentage according to XRF evaluation, and XRD data indicated a more intrinsic addition of the dopant to the carbide structure. In addition, no significant changes on particle size could be attributed to any of the methodologies, both producing Mo2C of approximately 30 nm.
Collapse
Affiliation(s)
- C P B Araujo
- Chemical Engineering Department, Universidade Federal do Rio Grande do Norte, Lagoa Nova, 59078-970, Natal, Brazil
| | - A V V M Frota
- Chemical Engineering Department, Universidade Federal do Rio Grande do Norte, Lagoa Nova, 59078-970, Natal, Brazil
| | - C P de Souza
- Chemical Engineering Department, Universidade Federal do Rio Grande do Norte, Lagoa Nova, 59078-970, Natal, Brazil
| | - M V M Souto
- Materials' Science and Engineering Department, Universidade Federal do Rio Grande do Norte, Lagoa Nova, 59078-970, Natal, Brazil
| | - C M Barbosa
- Materials' Science and Engineering Department, Universidade Federal do Rio Grande do Norte, Lagoa Nova, 59078-970, Natal, Brazil
| |
Collapse
|
10
|
Soares ER, Barbosa CM, Campagnole-Santos MJ, Santos RAS, Alzamora AC. Hypotensive effect induced by microinjection of Alamandine, a derivative of angiotensin-(1-7), into caudal ventrolateral medulla of 2K1C hypertensive rats. Peptides 2017; 96:67-75. [PMID: 28889964 DOI: 10.1016/j.peptides.2017.09.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 09/03/2017] [Accepted: 09/04/2017] [Indexed: 01/11/2023]
Abstract
In the present study we evaluated the cardiovascular effects produced by microinjection of the new component of the renin-angiotensin system, alamandine, into caudal ventrolateral medulla of urethane-anesthetized normotensive and hypertensive 2K1C rats. The participation of different angiotensin receptors in the effects of alamandine was also evaluated. Microinjection of angiotensin-(1-7) was used for comparison. The microinjection of 4, 40 and 140pmol of alamandine or angiotensin-(1-7) into caudal ventrolateral medulla induced similar hypotensive effects in Sham-operated rats. However, contrasting with angiotensin-(1-7), in 2K1C rats the MAP response to the highest dose of alamandine was similar to that observed with saline. The microinjection of A-779, a selective Mas receptor antagonist, blunted the angiotensin-(1-7) effects but did not block the hypotensive effect of alamandine in Sham or in 2K1C rats. However, microinjection of D-Pro7-angiotensin-(1-7), a Mas/MrgD receptor antagonist, blocked the hypotensive effect induced by both peptides. Furthermore, microinjection of PD123319, a putative AT2 receptor antagonist blocked the hypotensive effect of alamandine, but not of angiotensin-(1-7), in Sham and 2K1C rats. Microinjection of the AT1 receptor antagonist, losartan, did not alter the hypotensive effect of angiotensin-(1-7) or alamandine in both groups. These results provide new insights about the differential mechanisms participating in the central cardiovascular effects of alamandine and angiotensin-(1-7) in normotensive and 2K1C hypertensive rats.
Collapse
Affiliation(s)
- E R Soares
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil; Instituto Nacional de Ciência e Tecnologia em Inovação Nanobiofarmacêutica, Brazil
| | - C M Barbosa
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil; Instituto Nacional de Ciência e Tecnologia em Inovação Nanobiofarmacêutica, Brazil
| | - M J Campagnole-Santos
- Departamento de Fisiologia e Biofísica, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Instituto Nacional de Ciência e Tecnologia em Inovação Nanobiofarmacêutica, Brazil
| | - R A S Santos
- Departamento de Fisiologia e Biofísica, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Instituto Nacional de Ciência e Tecnologia em Inovação Nanobiofarmacêutica, Brazil.
| | - A C Alzamora
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil; Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil; Instituto Nacional de Ciência e Tecnologia em Inovação Nanobiofarmacêutica, Brazil.
| |
Collapse
|
11
|
Valões CCM, Molinari BC, Pitta ACG, Gormezano NWS, Farhat SCL, Kozu K, Sallum AME, Appenzeller S, Sakamoto AP, Terreri MT, Pereira RMR, Magalhães CS, Ferreira JCOA, Barbosa CM, Gomes FH, Bonfá E, Silva CA. Anti-ribosomal P antibody: a multicenter study in childhood-onset systemic lupus erythematosus patients. Lupus 2017; 26:484-489. [PMID: 28394238 DOI: 10.1177/0961203316676386] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Objectives Anti-ribosomal P protein (anti-P) autoantibodies are highly specific for systemic lupus erythematosus (SLE). However, the evaluation of this autoantibody in childhood-onset SLE (cSLE) populations has been limited to a few small series, hampering the interpretation of the clinical and laboratorial associations. Therefore, the objective of this multicenter cohort study was to evaluate demographic, clinical/laboratorial features, and disease damage score in cSLE patients with and without the presence of anti-P antibody. Methods This was a retrospective multicenter study performed in 10 pediatric rheumatology services of São Paulo state, Brazil. Anti-P antibodies were measured by ELISA in 228 cSLE patients. Results Anti-P antibodies were observed in 61/228 (27%) cSLE patients. Frequencies of cumulative lymphadenopathy (29% vs. 15%, p = 0.014), acute confusional state (13% vs. 5%, p = 0.041), mood disorder (18% vs. 8%, p = 0.041), autoimmune hemolytic anemia (34% vs. 15%, p = 0.001), as well as presence of anti-Sm (67% vs. 40%, p = 0.001), anti-RNP (39% vs. 21%, p = 0.012) and anti-Ro/SSA antibodies (43% vs. 25%, p = 0.016) were significantly higher in cSLE patients with anti-P antibodies compared to those without these autoantibodies. A multiple regression model revealed that anti-P antibodies were associated with autoimmune hemolytic anemia (odds ratio (OR) = 2.758, 95% confidence interval (CI): 1.304-5.833, p = 0.008) and anti-Sm antibody (OR = 2.719, 95% CI: 1.365-5.418, p = 0.004). The SLICC/ACR damage index was comparable in patients with and without anti-P antibodies ( p = 0.780). Conclusions The novel association of anti-P antibodies and autoimmune hemolytic anemia was evidenced in cSLE patients and further studies are necessary to determine if anti-P titers may vary with this hematological manifestation.
Collapse
Affiliation(s)
- C C M Valões
- 1 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Brazil
| | - B C Molinari
- 1 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Brazil
| | - A C G Pitta
- 1 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Brazil
| | - N W S Gormezano
- 1 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Brazil.,2 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Brazil
| | - S C L Farhat
- 1 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Brazil
| | - K Kozu
- 1 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Brazil
| | - A M E Sallum
- 1 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Brazil
| | - S Appenzeller
- 3 Pediatric Rheumatology Unit, State University of Campinas (UNICAMP), Brazil
| | - A P Sakamoto
- 4 Pediatric Rheumatology Unit, Universidade Federal de São Paulo (UNIFESP), Brazil
| | - M T Terreri
- 4 Pediatric Rheumatology Unit, Universidade Federal de São Paulo (UNIFESP), Brazil
| | - R M R Pereira
- 2 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Brazil
| | - C S Magalhães
- 5 Pediatric Rheumatology Division, São Paulo State University (UNESP) - Faculdade de Medicina de Botucatu, Brazil
| | - J C O A Ferreira
- 1 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Brazil
| | - C M Barbosa
- 6 Pediatric Rheumatology Unit, Hospital Darcy Vargas, Brazil
| | - F H Gomes
- 7 Pediatric Rheumatology Unit, Ribeirão Preto Medical School - FMUSP, Brazil
| | - E Bonfá
- 2 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Brazil
| | - C A Silva
- 1 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Brazil.,2 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Brazil
| | | |
Collapse
|
12
|
Lopes SRM, Gormezano NWS, Gomes RC, Aikawa NE, Pereira RMR, Terreri MT, Magalhães CS, Ferreira JC, Okuda EM, Sakamoto AP, Sallum AME, Appenzeller S, Ferriani VPL, Barbosa CM, Lotufo S, Jesus AA, Andrade LEC, Campos LMA, Bonfá E, Silva CA. Outcomes of 847 childhood-onset systemic lupus erythematosus patients in three age groups. Lupus 2017; 26:996-1001. [PMID: 28134038 DOI: 10.1177/0961203317690616] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [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: 11/16/2022]
Abstract
Objective The objective of this study was to assess outcomes of childhood systemic lupus erythematosus (cSLE) in three different age groups evaluated at last visit: group A early-onset disease (<6 years), group B school age (≥6 and <12 years) and group C adolescent (≥12 and <18 years). Methods An observational cohort study was performed in ten pediatric rheumatology centers, including 847 cSLE patients. Results Group A had 39 (4%), B 395 (47%) and C 413 (49%). Median disease duration was significantly higher in group A compared to groups B and C (8.3 (0.1-23.4) vs 6.2 (0-17) vs 3.3 (0-14.6) years, p < 0.0001). The median Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index (SLICC/ACR-DI) (0 (0-9) vs 0 (0-6) vs 0 (0-7), p = 0.065) was comparable in the three groups. Further analysis of organ/system damage revealed that frequencies of neuropsychiatric (21% vs 10% vs 7%, p = 0.007), skin (10% vs 1% vs 3%, p = 0.002) and peripheral vascular involvements (5% vs 3% vs 0.3%, p = 0.008) were more often observed in group A compared to groups B and C. Frequencies of severe cumulative lupus manifestations such as nephritis, thrombocytopenia, and autoimmune hemolytic anemia were similar in all groups ( p > 0.05). Mortality rate was significantly higher in group A compared to groups B and C (15% vs 10% vs 6%, p = 0.028). Out of 69 deaths, 33/69 (48%) occurred within the first two years after diagnosis. Infections accounted for 54/69 (78%) of the deaths and 38/54 (70%) had concomitant disease activity. Conclusions This large multicenter study provided evidence that early-onset cSLE group had distinct outcomes. This group was characterized by higher mortality rate and neuropsychiatric/vascular/skin organ damage in spite of comparable frequencies of severe cumulative lupus manifestations. We also identified that overall death in cSLE patients was an early event mainly attributed to infection associated with disease activity.
Collapse
Affiliation(s)
- S R M Lopes
- 1 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - N W S Gormezano
- 1 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - R C Gomes
- 2 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - N E Aikawa
- 1 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo, Brazil.,2 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - R M R Pereira
- 1 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - M T Terreri
- 3 Pediatric Rheumatology Unit, Universidade Federal de São Paulo, Brazil
| | - C S Magalhães
- 4 Pediatric Rheumatology Division, São Paulo State University (UNESP) - Faculdade de Medicina de Botucatu, Brazil
| | - J C Ferreira
- 2 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - E M Okuda
- 5 Pediatric Rheumatology Unit, Irmandade da Santa Casa de Misericórdia de São Paulo, Brazil
| | - A P Sakamoto
- 3 Pediatric Rheumatology Unit, Universidade Federal de São Paulo, Brazil
| | - A M E Sallum
- 2 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - S Appenzeller
- 6 Pediatric Rheumatology Unit, State University of Campinas (UNICAMP), Brazil
| | - V P L Ferriani
- 7 Pediatric Rheumatology Unit, Ribeirão Preto Medical School - University of São Paulo, Brazil
| | - C M Barbosa
- 8 Pediatric Rheumatology Unit, Hospital Infantil Darcy Vargas, Brazil
| | - S Lotufo
- 9 Pediatric Rheumatology Unit, Hospital Menino Jesus, Brazil
| | - A A Jesus
- 2 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - L E C Andrade
- 3 Pediatric Rheumatology Unit, Universidade Federal de São Paulo, Brazil
| | - L M A Campos
- 2 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - E Bonfá
- 1 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - C A Silva
- 1 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo, Brazil.,2 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | | |
Collapse
|
13
|
Pinto LB, Ometto T, Araújo J, Thomazelli LM, Seixas MM, Barbosa CM, Ramos DGS, Melo ALT, Pinho JB, Durigon EL, Aguiar DM. Investigation of Influenza A, West Nile and Newcastle Disease Viruses in Birds from the Pantanal Wetlands of Mato Grosso, Brazil. Rev Bras Cienc Avic 2016. [DOI: 10.1590/1806-9061-2015-0111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- LB Pinto
- Universidade Federal de Mato Grosso, Brazil
| | - T Ometto
- Universidade de São Paulo, Brazil
| | - J Araújo
- Universidade de São Paulo, Brazil
| | | | | | | | - DGS Ramos
- Universidade Federal de Mato Grosso, Brazil
| | - ALT Melo
- Universidade Federal de Mato Grosso, Brazil
| | - JB Pinho
- Universidade Federal de Mato Grosso, Brazil
| | | | - DM Aguiar
- Universidade Federal de Mato Grosso, Brazil
| |
Collapse
|
14
|
Ferreira JCOA, Marques HH, Ferriani MPL, Gormezano NWS, Terreri MT, Pereira RM, Magalhães CS, Campos LM, Bugni V, Okuda EM, Marini R, Pileggi GS, Barbosa CM, Bonfá E, Silva CA. Herpes zoster infection in childhood-onset systemic lupus erythematosus patients: a large multicenter study. Lupus 2016; 25:754-9. [PMID: 26821966 DOI: 10.1177/0961203315627203] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [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: 09/09/2015] [Accepted: 12/21/2015] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The aim of this multicenter study in a large childhood-onset systemic lupus erythematosus (cSLE) population was to assess the herpes zoster infection (HZI) prevalence, demographic data, clinical manifestations, laboratory findings, treatment, and outcome. METHODS A retrospective multicenter cohort study (Brazilian cSLE group) was performed in ten Pediatric Rheumatology services in São Paulo State, Brazil, and included 852 cSLE patients. HZI was defined according to the presence of acute vesicular-bullous lesions on erythematous/edematous base, in a dermatomal distribution. Post-herpetic neuralgia was defined as persistent pain after one month of resolution of lesions in the same dermatome. Patients were divided in two groups for the assessment of current lupus manifestations, laboratory findings, and treatment: patients with HZI (evaluated at the first HZI) and patients without HZI (evaluated at the last visit). RESULTS The frequency of HZI in cSLE patients was 120/852 (14%). Hospitalization occurred in 73 (61%) and overlap bacterial infection in 16 (13%). Intravenous or oral aciclovir was administered in 113/120 (94%) cSLE patients at HZI diagnosis. None of them had ophthalmic complication or death. Post-herpetic neuralgia occurred in 6/120 (5%). After Holm-Bonferroni correction for multiple comparisons, disease duration (1.58 vs 4.41 years, p < 0.0001) was significantly lower in HZI cSLE patients compared to those without HZI. Nephritis (37% vs 18%, p < 0.0001), lymphopenia (32% vs 17%, p < 0.0001) prednisone (97% vs 77%, p < 0.0001), cyclophosphamide (20% vs 5%, p < 0.0001) and SLE Disease Activity Index 2000 (6.0 (0-35) vs 2 (0-45), p < 0.0001) were significantly higher in the former group. The logistic regression model showed that four independent variables were associated with HZI: disease duration < 1 year (OR 2.893 (CI 1.821-4.597), p < 0.0001), lymphopenia <1500/mm(3) (OR 1.931 (CI 1.183-3.153), p = 0.009), prednisone (OR 6.723 (CI 2.072-21.815), p = 0.002), and cyclophosphamide use (OR 4.060 (CI 2.174-7.583), p < 0.0001). CONCLUSION HZI is an early viral infection in cSLE with a typical dermatomal distribution. Lymphopenia and immunosuppressive treatment seem to be major factors underlying this complication in spite of a benign course.
Collapse
Affiliation(s)
- J C O A Ferreira
- Pediatric Rheumatology Unit, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | | | - M P L Ferriani
- Pediatric Rheumatology Unit, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - N W S Gormezano
- Pediatric Rheumatology Unit, Faculdade de Medicina da Universidade de São Paulo, Brazil Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - M T Terreri
- Pediatric Rheumatology Unit, Universidade Federal de São Paulo, Brazil
| | - R M Pereira
- Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - C S Magalhães
- Pediatric Rheumatology Unit, São Paulo State University (UNESP), Faculdade de Medicina de Botucatu, Brazil
| | - L M Campos
- Pediatric Rheumatology Unit, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - V Bugni
- Pediatric Rheumatology Unit, Universidade Federal de São Paulo, Brazil
| | - E M Okuda
- Pediatric Rheumatology Unit, Irmandade da Santa Casa de Misericórdia de São Paulo, Brazil
| | - R Marini
- Pediatric Rheumatology Unit, State University of Campinas, Brazil
| | - G S Pileggi
- Pediatric Rheumatology Unit, Ribeirão Preto Medical School, University of São Paulo, Brazil
| | - C M Barbosa
- Pediatric Rheumatology Unit, Hospital Infantil Darcy Vargas, Brazil
| | - E Bonfá
- Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - C A Silva
- Pediatric Rheumatology Unit, Faculdade de Medicina da Universidade de São Paulo, Brazil
| |
Collapse
|
15
|
Pedroza LSRA, Sauma MFLC, Vasconcelos JM, Takeshita LYC, Ribeiro-Rodrigues EM, Sastre D, Barbosa CM, Chies JAB, Veit TD, Lima CPS, Oliveira LF, Henderson BL, Castro APG, Maia MHT, Barbosa FB, Santos SEB, Guerreiro JF, Sena L, Santos EJM. Systemic lupus erythematosus: association with KIR and SLC11A1 polymorphisms, ethnic predisposition and influence in clinical manifestations at onset revealed by ancestry genetic markers in an urban Brazilian population. Lupus 2011; 20:265-73. [PMID: 21233146 DOI: 10.1177/0961203310385266] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disorder of the connective tissue with a wide and heterogeneous spectrum of manifestations, with renal and neurological involvement usually related to worse prognosis. SLE more frequently affects females of reproductive age, and a high prevalence and renal manifestation seem to be associated with non-European ethnicity. The present study aims to investigate candidate loci to SLE predisposition and evaluate the influence of ethnic ancestry in the disease risk and clinical phenotypic heterogeneity of lupus at onset. Samples represented by 111 patients and 345 controls, originated from the city of Belém, located in the Northern Region of Brazil, were investigated for polymorphisms in HLA-G, HLA-C, SLC11A1, MTHFR, CASP8 and 15 KIR genes, in addition to 89 Amerindian samples genotyped for SLC11A1. We also investigated 48 insertion/deletion ancestry markers to characterize individual African, European and Amerindian ancestry proportions in the samples. Predisposition to SLE was associated with GTGT deletion at the SLC11A1 3'UTR, presence of KIR2DS2 +/KIR2DS5 +/KIR3DS1 + profile, increased number of stimulatory KIR genes, and European and Amerindian ancestries. The ancestry analysis ruled out ethnic differences between controls and patients as the source of the observed associations. Moreover, the African ancestry was associated with renal manifestations.
Collapse
Affiliation(s)
- L S R A Pedroza
- 1Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Pará, Brazil
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
|
17
|
Lopes RI, Dias AR, Lopes SI, Cordeiro MD, Barbosa CM, Lopes RN. A calcified foreign body in the bladder after laparoscopic inguinal hernia repair. Hernia 2007; 12:91-3. [PMID: 17541491 DOI: 10.1007/s10029-007-0243-2] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2006] [Accepted: 04/23/2007] [Indexed: 11/26/2022]
Abstract
In this paper, we report an exceedingly rare complication after laparoscopic inguinal hernioplasty. A 57-year-old man was submitted to transurethral resection of the prostate followed by laparoscopic "bikini mesh" hernia repair. One year later, he presented with miccional irritative symptoms. Ultrasonography showed a vesical intraluminal foreign body and computerized tomography revealed a calcified foreign body on the anterior bladder wall. On reoperation, it was noted that there occurred mesh transfixation of the bladder. The lateral segments were removed and the patient recovered uneventfully. This is a, thus far, unpublished complication of this technique.
Collapse
Affiliation(s)
- R I Lopes
- Sociedade Beneficente Hospital Sírio Libanês, São Paulo, Brazil.
| | | | | | | | | | | |
Collapse
|
18
|
Souto EB, Wissing SA, Barbosa CM, Müller RH. Comparative study between the viscoelastic behaviors of different lipid nanoparticle formulations. J Cosmet Sci 2004; 55:463-71. [PMID: 15608996] [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] [Subscribe] [Scholar Register] [Accepted: 07/07/2004] [Indexed: 05/01/2023]
Abstract
Application of drug substances to the skin for systemic absorption or action in a particular layer of the skin is a rather old approach. However, over the last years it has received much more attention, as a consequence of the development of new membrane-moderated and matrix reservoir devices. As new reservoir systems, solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) have been successfully tested for dermal application of different physicochemical substances. The knowledge obtained from rheological investigations of these systems may be highly useful for the characterization of the newly developed topical formulation. In the present study, an oscillation frequency sweep test was used for the evaluation of storage modulus (G'), loss modulus (G''), and complex viscosity (eta*) of twelve different SLN and NLC formulations, over a frequency range from 0 to 10 Hz. The lipidic aqueous dispersions were prepared using three different solid lipids (Softisan138, Compritol888, and stearyl alcohol) as matrix material. Miglyol812, tocopherol, sunflower oil, and long-chain triacylglycerols were the chosen liquid lipids for NLC preparation. The objective of the present work was to investigate the effect of these different liquid lipids on the rheological properties of aqueous dispersions of NLC as model systems. It was found that the liquid oil component of the formulation has a strong influence on the viscoelastic parameters, which are dependent on the particle size, zeta potential, and crystallinity of the lipid particles, as well as on the solid lipid used.
Collapse
Affiliation(s)
- E B Souto
- Department of Pharmaceutics, Biopharmaceutics and Biotechnology, Free University of Berlin, Kelchstrasse 31, D-12169 Berlin, Germany
| | | | | | | |
Collapse
|
19
|
Souto EB, Wissing SA, Barbosa CM, Müller RH. Evaluation of the physical stability of SLN and NLC before and after incorporation into hydrogel formulations. Eur J Pharm Biopharm 2004; 58:83-90. [PMID: 15207541 DOI: 10.1016/j.ejpb.2004.02.015] [Citation(s) in RCA: 140] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2003] [Revised: 10/07/2003] [Accepted: 02/24/2004] [Indexed: 10/26/2022]
Abstract
Aqueous dispersions of lipid nanoparticles are being investigated as drug delivery systems for different therapeutic purposes. One of their interesting features is the possibility of topical use, for which these systems have to be incorporated into commonly used dermal carriers, such as creams or hydrogels, in order to have a proper semisolid consistency. For the present investigation four different gel-forming agents (xanthan gum, hydroxyethylcellulose 4000, Carbopol943 and chitosan) were selected for hydrogel preparation. Aqueous dispersions of lipid nanoparticles--solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC)--made from tripalmitin were prepared by hot high pressure homogenization and then incorporated into the freshly prepared hydrogels. NLC differ from SLN due to the presence of a liquid lipid (Miglyol812) in the lipid matrix. Lipid nanoparticles were physically characterized before and after their incorporation into hydrogels. By means of rheological investigations it could be demonstrated that physical properties of the dispersed lipid phase have a great impact on the rheological properties of the prepared semisolid formulations. By employing an oscillation frequency sweep test, significant differences in elastic response of SLN and NLC aqueous dispersions could be observed.
Collapse
Affiliation(s)
- E B Souto
- Department of Pharmaceutics, Biopharmaceutics and Biotechnology, Free University of Berlin, Berlin, Germany
| | | | | | | |
Collapse
|
20
|
Souto EB, Wissing SA, Barbosa CM, Müller RH. Development of a controlled release formulation based on SLN and NLC for topical clotrimazole delivery. Int J Pharm 2004; 278:71-7. [PMID: 15158950 DOI: 10.1016/j.ijpharm.2004.02.032] [Citation(s) in RCA: 471] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2003] [Revised: 02/19/2004] [Accepted: 02/21/2004] [Indexed: 11/19/2022]
Abstract
Solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) are colloidal carrier systems providing controlled release profiles for many substances. Clotrimazole-loaded SLN and NLC were prepared by the hot high pressure homogenization technique in order to evaluate the physical stability of these particles, as well as the entrapment efficiency of this lipophilic drug and its in vitro release profile. The particle size was analyzed by PCS and LD showing that the particles remained in their colloidal state during 3 months of storage at 4, 20 and 40 degrees C. For all tested formulations the entrapment efficiency was higher than 50%. The obtained results also demonstrate the use of these lipid nanoparticles as modified release formulations for lipophilic drugs over a period of 10 h.
Collapse
Affiliation(s)
- E B Souto
- Department of Pharmaceutics, Biopharmaceutics and Biotechnology, Free University of Berlin, Kelchstr. 31, D-12169 Berlin, Germany
| | | | | | | |
Collapse
|
21
|
Teixeira M, Pinto MMM, Barbosa CM. Validation of a spectrophotometric method for quantification of xanthone in biodegradable nanoparticles. Pharmazie 2004; 59:257-9. [PMID: 15125567] [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] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
Xanthone has been incorporated for the first time in nanoparticles of poly(D,L-lactide-co-glycolide) (PLGA). For this purpose the estimation of xanthone content in the nanoparticles is a crucial tool for guaranteeing the reliability of the results. Thus, a simple spectrophotometric method was validated according to USP25 and ICH guidelines for its specificity, linearity, accuracy and precision. The method was found to be specific for xanthone in the presence of nanoparticle excipients. The calibration curve was linear over the concentration range of 0.5 to 4.0 microg/mL (r > 0.999). Recovery of xanthone from nanoparticles ranged from 86.5 to 95.9%. Repeatability (intra-assay precision) and intermediate precision were found to be acceptable with relative standard deviations values (RSD) ranging from 0.3 to 3.0% and from 1.4 to 3.1%, respectively. The method was found to be suitable for the evaluation of xanthone content in nanoparticles of PLGA.
Collapse
Affiliation(s)
- M Teixeira
- Centro de Estudos de Química Orgânica, Fitoquímica e Farmacologia da Universidade do Porto, Faculdade de Farmácia, Porto, Portugal
| | | | | |
Collapse
|
22
|
Abstract
A reversed-phase high-performance liquid chromatographic method that enables the determination of clonixin in human plasma and urine samples is described. Recovery of the drug was over 87.6 and 80.7% for plasma and urine, respectively. The limit of quantitation of the method was established as 10 ng/ml in plasma and 20 ng/ml in urine samples, with RSDs of less than 11.1%. The applicability of the method was further assessed by determining the plasma concentrations time course of clonixin in six healthy volunteers after single oral dose administration of 150 and 300 mg of clonixin and Clonix.
Collapse
Affiliation(s)
- A Bica
- Laboratório de Estudos Farmacêuticos, Lisbon, Portugal
| | | | | | | |
Collapse
|
23
|
Gil IA, Barbosa CM, Pedro VM, Silverio KC, Goldfarb DP, Fusco V, Navarro CM. Multidisciplinary approach to chronic pain from myofascial pain dysfunction syndrome: a four-year experience at a Brazilian center. Cranio 1998; 16:17-25. [PMID: 9481982 DOI: 10.1080/08869634.1998.11746034] [Citation(s) in RCA: 12] [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: 02/06/2023]
Abstract
Chronic pain is the major complaint of myofascial pain dysfunction syndrome (MPDS) and is a complex problem which involves physical, psychological and social aspects. The etiology of MPDS is multifactorial and the multidisciplinary approach is essential for differential diagnosis and for comprehensive treatment planning. In 1993, the Dental School of Piracicaba-UNICAMP, Brazil, opened a Center for Pain Studies (CPS), staffed by health care providers including, dentists, psychologists, physicians, physiotherapists and phonoaudiologists. The major aims of the CPS are to provide clinical care and to develop basic and applied research. Sixty-two MPDS patients had been admitted to the CPS by 1997. There were 60 females and 2 males, mean age-32.5 years. The mean duration of chronic pain was 48 months. Pain intensity and unpleasantness were measured employing the Visual Analogue Scale. The tendency to develop stress-related diseases was assessed by the Social Readjustment Scale. There was a mean reduction of chronic pain of 69.89% and 71.78% relative to intensity and unpleasantness, respectively. The experience of clinical attendance at a multidisciplinary center showed the relevance of a team consisting of health care providers from different specialties with well-established aims, completely integrated and sensitive enough to understand the painful complaints of MPDS patients.
Collapse
Affiliation(s)
- I A Gil
- University of Campinas, UNICAMP, São Paulo State, Brazil
| | | | | | | | | | | | | |
Collapse
|