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Tassinary JAF, Lunardelli A, Basso BDS, Dias HB, Catarina AV, Stülp S, Haute GV, Martha BA, Melo DADS, Nunes FB, Donadio MVF, Oliveira JRD. Low-intensity pulsed ultrasound (LIPUS) stimulates mineralization of MC3T3-E1 cells through calcium and phosphate uptake. Ultrasonics 2018; 84:290-295. [PMID: 29182945 DOI: 10.1016/j.ultras.2017.11.011] [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] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 11/20/2017] [Accepted: 11/20/2017] [Indexed: 06/07/2023]
Abstract
The present study aimed to evaluate the effect of low-intensity pulsed ultrasound (LIPUS) on pre-osteoblast mineralization using in vitro bioassays. Pre-osteoblastic MC3T3-E1 cells were exposed to LIPUS at 1 MHz frequency, 0.2 W/cm2 intensity and 20% duty cycle for 30 min. The analyses were carried out up to 336 h (14 days) after exposure. The concentration of collagen, phosphate, alkaline phosphatase, calcium and transforming growth factor beta 1 (TGF-β1) in cell supernatant and the presence of calcium deposits in the cells were analyzed. Our results showed that LIPUS promotes mineralized nodules formation. Collagen, phosphate, and calcium levels were decreased in cell supernatant at 192 h after LIPUS exposure. However, alkaline phosphatase and TGF-β1 concentrations remained unchanged. Therapeutic pulsed ultrasound is capable of stimulating differentiation and mineralization of pre-osteoblastic MC3T3-E1 cells by calcium and phosphate uptake with consequent hydroxyapatite formation.
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Affiliation(s)
- João Alberto Fioravante Tassinary
- Univates, Lajeado, Rio Grande do Sul, Brazil; Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Adroaldo Lunardelli
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil; Centro Universitário Ritter dos Reis (UniRitter), Porto Alegre, Rio Grande do Sul, Brazil
| | - Bruno de Souza Basso
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Henrique Bregolin Dias
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Anderson Velasque Catarina
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | | | - Gabriela Viegas Haute
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Bianca Andrade Martha
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Denizar Alberto da Silva Melo
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Fernanda Bordignon Nunes
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Márcio Vinícius Fagundes Donadio
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Jarbas Rodrigues de Oliveira
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil.
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Lunardelli A, Dornelles Machado I, Da Cruz Monteiro S. PROGRAMA DE DESCARTE APROPRIADO DO REJEITO MEDICAMENTOSO COMO FERRAMENTA INSTITUCIONAL EDUCACIONAL. ACTA ACUST UNITED AC 2017. [DOI: 10.5216/ref.v14i1.42775] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Grande quantidade de medicamento é descartada diariamente. Esse é um material tóxico e, portanto, não deve seguir o mesmo caminho do lixo comum. A reflexão estimulada através de um programa educativo e de uma campanha de arrecadação de medicamentos impróprios parece vital na formação não somente de cidadãos com discernimento, mas também multiplicadores deste conhecimento. Além de desenvolver um mecanismo institucional educacional, o intento deste desígnio foi avaliar quantitativamente e qualitativamente o resíduo medicamentoso desprezado pela comunidade acadêmica. Para tal, foi colocado um coletor de medicamentos expirados no saguão do principal acesso ao Centro Universitário Ritter dos Reis (UniRitter). O rejeito ali posto foi analisado entre os dias 10 de novembro de 2014 e 30 de agosto de 2016. No total, foram arrecadados 102.683 unidades de medicamentos rejeitados, sendo que o fármaco mais prevalente encontrado foi a fluoxetina. Há grande demanda de medicamentos a serem rejeitados pela população. Programas que permitem o transporte reverso são de evidente importância para a questão ambiental. Quando o rejeito medicamentoso é trabalhado no ambiente acadêmico, de forma transversal e agregadora, há a competente união entre as discussões técnicas da alçada profissional farmacêutica e a projeção da questão humanista ambiental sustentável.
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Bitencourt S, Lunardelli A, Amaral RH, Dias HB, Boschi ES, de Oliveira JR. Safety and patient subjective efficacy of using galvanopuncture for the treatment of striae distensae. J Cosmet Dermatol 2016; 15:393-398. [PMID: 27090205 DOI: 10.1111/jocd.12222] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Accepted: 03/28/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND Striae distensae are linear atrophic dermal scars with associated epidermal atrophy. This recurrent skin disorder causes a significant cosmetic and psychologic concern and remains a therapeutic challenge, especially when they are mature and hypopigmented (striae alba). AIMS In this prospective single-center study, we evaluated the efficacy, safety, and patient's satisfaction of galvanopuncture for the treatment of striae alba. PATIENTS/METHODS Thirty-two female subjects with striae alba present on the buttocks were treated with galvanopuncture once a week over a period of 10 weeks. Photographs and a percentage category scale were used to assess striae improvement and patient's satisfaction. Biochemical analyses were performed to assess possible systemic inflammatory effects or oxidative stress induction by the treatment. RESULTS All patients achieved a substantial increase in clinical improvement in their striae within 10 treatment sessions. Galvanopuncture did not induce any inflammatory effect; however, it reduced oxidative injury. CONCLUSION The use of galvanopuncture for the treatment of striae alba demonstrated a significant improvement in the lesions with visible results. This study supports the high degree of patient's satisfaction and demonstrate the safe and effective use of galvanopuncture in the treatment of striae alba on several skin types.
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Affiliation(s)
- Shanna Bitencourt
- Laboratório de Cultura de Células, Centro de Ciências Biológicas e da Saúde, Centro Universitário UNIVATES, Lajeado, Brazil
| | | | - Robson Henrich Amaral
- Laboratório de Análises Clínicas, Instituto de Cardiologia do Rio Grande do Sul, Porto Alegre, Brazil
| | - Henrique Bregolin Dias
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Emerson Soldateli Boschi
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Jarbas Rodrigues de Oliveira
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
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Tassinary JA, Lunardelli A, Basso BS, Stülp S, Pozzobon A, Pedrazza L, Bartrons R, Ventura F, Rosa JL, Melo DA, Nunes FB, Donadio MV, Oliveira JR. Therapeutic ultrasound stimulates MC3T3-E1 cell proliferation through the activation of NF-κB1, p38α, and mTOR. Lasers Surg Med 2015; 47:765-72. [DOI: 10.1002/lsm.22414] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2015] [Indexed: 11/05/2022]
Affiliation(s)
- João A.F. Tassinary
- Univates; Lajeado; Rio Grande do Sul Brazil
- Laboratório de Pesquisa em Biofísica Celular e Inflamação; Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS); Porto Alegre, Rio Grande do Sul Brazil
| | - Adroaldo Lunardelli
- Laboratório de Pesquisa em Biofísica Celular e Inflamação; Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS); Porto Alegre, Rio Grande do Sul Brazil
| | - Bruno S. Basso
- Laboratório de Pesquisa em Biofísica Celular e Inflamação; Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS); Porto Alegre, Rio Grande do Sul Brazil
| | | | | | - Leonardo Pedrazza
- Laboratório de Pesquisa em Biofísica Celular e Inflamação; Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS); Porto Alegre, Rio Grande do Sul Brazil
| | | | | | | | - Denizar A.S. Melo
- Laboratório de Pesquisa em Biofísica Celular e Inflamação; Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS); Porto Alegre, Rio Grande do Sul Brazil
| | - Fernanda B. Nunes
- Laboratório de Pesquisa em Biofísica Celular e Inflamação; Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS); Porto Alegre, Rio Grande do Sul Brazil
| | - Márcio V.F. Donadio
- Laboratório de Pesquisa em Biofísica Celular e Inflamação; Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS); Porto Alegre, Rio Grande do Sul Brazil
| | - Jarbas R. Oliveira
- Laboratório de Pesquisa em Biofísica Celular e Inflamação; Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS); Porto Alegre, Rio Grande do Sul Brazil
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Bonorino NF, Lunardelli A, Oliveira JR. Use of ischemia modified albumin for the diagnosis of myocardial infarction. Jornal Brasileiro de Patologia e Medicina Laboratorial 2015. [DOI: 10.5935/1676-2444.20150060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Pedrazza L, Lunardelli A, Luft C, Cruz CU, de Mesquita FC, Bitencourt S, Nunes FB, de Oliveira JR. Mesenchymal stem cells decrease splenocytes apoptosis in a sepsis experimental model. Inflamm Res 2014; 63:719-28. [PMID: 24888322 DOI: 10.1007/s00011-014-0745-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 05/15/2014] [Accepted: 05/19/2014] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE AND DESIGN Mesenchymal stem cells (MSCs) are potent modulators of immune responses. Sepsis is the association of a systemic inflammatory response with an infection. The aim of this study was to test the ability of MSCs derived from adipose tissue, which have immunomodulatory effects, and to inhibit the septic process in an experimental model of mice. METHODS Three experimental groups (male C57BL/6 mice) were formed for the test: control group, untreated septic group and septic group treated with MSCs (1 × 10(6) cells/animal). RESULTS In the control group, there were no deaths; in the untreated septic group, the mortality rate was 100 % within 26 h; in the septic group treated with MSCs, the mortality rate reached 40 % within 26 h. The group treated with MSCs was able to reduce the markers of tissue damage in the liver and pancreas. The treated group had a reduction of inflammatory markers. Furthermore, the MSCs-treated group was able to inhibit the increase of apoptosis in splenocytes observed in the untreated septic group. CONCLUSIONS Our data showed that MSCs ameliorated the immune response with decrease of inflammatory cytokines and increase anti-inflammatory IL-10; moreover, inhibited splenocytes apoptosis and, consequently, inhibited tissue damage during sepsis.
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Affiliation(s)
- Leonardo Pedrazza
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Avenida Ipiranga 6681, prédio 12, bloco C, sala 221, Porto Alegre, Rio Grande do Sul, CEP 90619-900, Brazil
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Lunardelli A, Alvarenga RB, Assmann ML, Brum DEDL, Barison MA. Serological profile of candidates for corneal donation. Revista Brasileira de Oftalmologia 2014. [DOI: 10.5935/0034-7280.20140061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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de Mello RO, Lunardelli A, Caberlon E, de Moraes CMB, Christ Vianna Santos R, da Costa VL, da Silva GV, da Silva Scherer P, Buaes LEC, da Silva Melo DA, Donadio MVF, Nunes FB, de Oliveira JR. Effect of N-acetylcysteine and fructose-1,6-bisphosphate in the treatment of experimental sepsis. Inflammation 2012; 34:539-50. [PMID: 20882329 DOI: 10.1007/s10753-010-9261-9] [Citation(s) in RCA: 12] [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] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Sepsis is a syndrome caused by uncontrolled systemic inflammatory response of the individual, which represents a serious epidemiological problem worldwide. The aim of this study was to investigate the effect of N-acetylcysteine (NAC) and fructose-1,6-bisphosphate (FBP) in the treatment of experimental sepsis. We used rats that were divided into five experimental groups: normal control (not induced), septic control (induced using a capsule with non sterile fecal content and Escherichia coli), treated with FBP (500 mg/kg i.p.), treated with NAC (150 mg/kg i.p.), and treated with the combination of FBP with NAC. In the group treated with NAC, 16.68% of the mice survived, the FBP reduced the mortality of mice during the acute stage of the disease and increased the animals' survival time in 33.34%, and the combination of drugs had no effect. Our results show that NAC prevented the mortality of animals after septic induction. These data confirm the validity of the use of NAC in the treatment of sepsis. Our data also show that the synergistic action with FBP does not improve the picture.
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Affiliation(s)
- Ricardo Obalski de Mello
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Avenida Ipiranga 6681, prédio 12C, sala 263, CEP 90.619-900, Porto Alegre, Rio Grande do Sul, Brazil
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Mello ROD, Lunardelli A, Caberlon E, Moraes CMBD, Santos RCV, Costa VLD, da Silva GV, Scherer PDS, Buaes LEC, Donadio MVF, Nunes FB, Oliveira JRD. N-acetylcysteine and fructose-1,6-bisphosphate: immunomodulatory effects on mononuclear cell culture. J Bras Patol Med Lab 2012. [DOI: 10.1590/s1676-24442012000200007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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de Oliveira CB, Comunello LN, Lunardelli A, Amaral RH, Pires MGS, da Silva GL, Manfredini V, Vargas CR, Gnoatto SCB, de Oliveira JR, Gosmann G. Phenolic enriched extract of Baccharis trimera presents anti-inflammatory and antioxidant activities. Molecules 2012; 17:1113-23. [PMID: 22269829 PMCID: PMC6268486 DOI: 10.3390/molecules17011113] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [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: 12/05/2011] [Revised: 12/27/2011] [Accepted: 01/09/2012] [Indexed: 11/16/2022] Open
Abstract
Baccharis trimera is a plant popularly used as a tea and to treat gastrointestinal diseases and inflammatory processes as well. The total phenolic content was determined and the antioxidant and anti-inflammatory activities of six extracts (dichloromethane, ethyl acetate, butanol, aqueous, saponin and phenolic) from B. trimera were evaluated. Using carrageenan-induced pleurisy as a model of acute inflammation, the phenolic extract at 15 mg/kg decreased significantly the analyzed parameters when compared to the carrageenan group (p < 0.05), thus showing potential anti-inflammatory activity. The total phenolic content and antioxidant activity were evaluated by the Folin-Ciocalteau and DPPH methods, respectively. Phenolic and ethyl acetate extracts presented higher antioxidant activity (p < 0.05) than ascorbic acid. The phenolic extract also showed the highest antioxidant potential in relation to the other extracts, thus suggesting that the antioxidant and anti-inflammatory activities were due to the presence of phenolic compounds.
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Affiliation(s)
- Cristiane B. de Oliveira
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS 90610-000, Brazil; (C.B.O.); (L.N.C.); (S.C.B.G.)
- Laboratório de Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS 90619-900, Brazil; (A.L.); (R.H.A.); (M.G.S.P.); (G.L.S.); (J.R.O.)
| | - Lucimara N. Comunello
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS 90610-000, Brazil; (C.B.O.); (L.N.C.); (S.C.B.G.)
| | - Adroaldo Lunardelli
- Laboratório de Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS 90619-900, Brazil; (A.L.); (R.H.A.); (M.G.S.P.); (G.L.S.); (J.R.O.)
| | - Robson H. Amaral
- Laboratório de Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS 90619-900, Brazil; (A.L.); (R.H.A.); (M.G.S.P.); (G.L.S.); (J.R.O.)
| | - Melissa G. S. Pires
- Laboratório de Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS 90619-900, Brazil; (A.L.); (R.H.A.); (M.G.S.P.); (G.L.S.); (J.R.O.)
| | - Gabriela Lucas da Silva
- Laboratório de Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS 90619-900, Brazil; (A.L.); (R.H.A.); (M.G.S.P.); (G.L.S.); (J.R.O.)
| | - Vanusa Manfredini
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS 90610-000, Brazil; (C.B.O.); (L.N.C.); (S.C.B.G.)
- Hospital de Clínicas de Porto Alegre, Serviço de Genética Médica, UFRGS, Porto Alegre, RS 93050-150, Brazil; (V.M.); (C.R.V.)
| | - Carmen Regla Vargas
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS 90610-000, Brazil; (C.B.O.); (L.N.C.); (S.C.B.G.)
- Hospital de Clínicas de Porto Alegre, Serviço de Genética Médica, UFRGS, Porto Alegre, RS 93050-150, Brazil; (V.M.); (C.R.V.)
| | - Simone C. B. Gnoatto
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS 90610-000, Brazil; (C.B.O.); (L.N.C.); (S.C.B.G.)
| | - Jarbas R. de Oliveira
- Laboratório de Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS 90619-900, Brazil; (A.L.); (R.H.A.); (M.G.S.P.); (G.L.S.); (J.R.O.)
| | - Grace Gosmann
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS 90610-000, Brazil; (C.B.O.); (L.N.C.); (S.C.B.G.)
- Author to whom correspondence should be addressed; ; Tel.: +55-51-3308-5526; Fax: +55-51-3308-5313
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Mello KF, Lunardelli A, Donadio MVF, Caberlon E, Oliveira CSAD, Bastos CMA, Pires MGS, Nunes FB, Oliveira JRD. Immunomodulatory effects of oral antidiabetic drugs in lymphocyte cultures from patients with type 2 diabetes. J Bras Patol Med Lab 2011. [DOI: 10.1590/s1676-24442011000100006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Azambuja MS, Lunardelli A, Amaral RH, Nunes FB, Caberlon E, da Costa VL, Donadio MVF, Vitor DN, da Silva Melo Denizar A, Cunha S, de Oliveira JR. Anti-inflammatory and immunomodulatory effects of RDV-8 [C18H22N2O2S (ethyl 1-butyl-6-methyl-2-phenyl-4-thioxo-1,4-dihydropyrimidine-5-carboxylate)] in a rat model of induced pleurisy and in vitro lymphoproliferation. Inflammopharmacology 2010; 19:145-53. [PMID: 20981574 DOI: 10.1007/s10787-010-0063-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2010] [Accepted: 10/06/2010] [Indexed: 10/18/2022]
Abstract
RDV-8 [C(18)H(22)N(2)O(2)S (ethyl 1-butyl-6-methyl-2-phenyl-4-thioxo-1,4-dihydropyrimidine-5-carboxylate)] is derived from the 4-thioxopyrimidine, and presents important clinical effects. The present study explored the RDV-8 effects in the proliferation of human peripheral blood mononuclear cells (PBMCs), as well as in a pleurisy-induced rat model. PBMCs were directly plated in four different RDV-8 concentrations (0.0125, 0.025, 0.05 and 0.1 mg/mL). RDV-8 decreased cell proliferation and monocyte chemotactic protein 1 synthesis. The interleukin 1 levels and the cytotoxic effect were not significantly affected by RDV-8 treatment. In the carrageenan-induced pleurisy model, the RDV-8 (3 mg/kg) treatment induced a significant reduction in the exudate volume, in the polymorphonuclear leukocyte migration and in the pleural exudate NO levels. The results indicate that RDV-8 may have an immunomodulatory effect, as well as anti-inflammatory actions suggesting that it could represent a new strategy in the inflammatory response modulation.
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Affiliation(s)
- Marcos Schuch Azambuja
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
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Paul EL, Lunardelli A, Caberlon E, de Oliveira CB, Santos RCV, Biolchi V, Bastos CMA, Moreira KB, Nunes FB, Gosmann G, de Oliveira JR. Anti-inflammatory and immunomodulatory effects of Baccharis trimera aqueous extract on induced pleurisy in rats and lymphoproliferation in vitro. Inflammation 2010; 32:419-25. [PMID: 19756999 DOI: 10.1007/s10753-009-9151-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Baccharis trimera is a widespread South American plant known as "carqueja". Medicinal teas prepared from the aerial parts of this plant are used in folk medicine in cases of liver diseases and inflammatory processes. We evaluated the effects of aqueous extract of B. trimera in the experimental inflammatory model of carrageenan-induced pleurisy in rat. The injection of carrageenan into the pleural cavity induces an influx of cells and fluid accumulation with a large number of polymorphonuclear leukocytes and increase of protein levels. The inflammation parameters were attenuated when B. trimera (400 and 800 mg/kg, i.p.) was administrated 30 min before the carrageenan. The immunomodulatory effects were evaluated in vitro on human peripheral blood mononuclear cells. The extract in concentration of 25, 50 and 100 mg/mL presented inhibited the T-lymphocytes proliferation stimulated by phytohemagglutinin, but these extract concentrations also presented cytotoxic effect. These results showed that the aqueous extract of B. trimera has anti-inflammatory effect.
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Affiliation(s)
- Elisiane Lozza Paul
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Faculdade de Biociências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brasil
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Santos RCV, Lunardelli A, Caberlon E, Bastos CMA, Nunes FB, Pires MGS, Biolchi V, Paul EL, Vieira FBC, Resende do Carmo Aquino A, Corseuil E, de Oliveira JR. Anti-inflammatory and immunomodulatory effects of Ulomoides dermestoides on induced pleurisy in rats and lymphoproliferation in vitro. Inflammation 2010; 33:173-9. [PMID: 20020191 DOI: 10.1007/s10753-009-9171-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The following study aimed to evaluate, in vitro and in vivo, the anti-inflammatory effect of Ulomoides dermestoides, a beetle commonly used as a remedy for a variety of diseases including respiratory disorders and asthma. We used an acute inflammation model of injury, injection of carrageenan into the pleural cavity of rats. The rats were treated intraperitoneally with the aqueous extract of U. dermestoides 8 and 16 mg/kg. The exudate volume, protein concentration, polymorphonuclear leukocytes (PMNs) and total leukocyte were measured. The peripheral blood mononuclear cells (PBMCs) were isolated from the blood of healthy subjects and we investigated the immunomodulatory and cytotoxic effect of aqueous extract of U. dermestoides. In conclusion, in vitro we observed a non-cytotoxic effect and antiproliferative activity on the dose of 12.5 mg/dL. In vivo, this paper clarifies the great clinical relevance of the aqueous extract of U. dermestoides in elucidating its role as an anti-inflammatory agent.
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Affiliation(s)
- Roberto Christ Vianna Santos
- Laboratório de Microbiologia Clínica, Centro Universitário Franciscano (UNIFRA), Santa Maria, Rio Grande do Sul, Brasil
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15
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Spiller F, Alves MK, Vieira SM, Carvalho TA, Leite CE, Lunardelli A, Poloni JA, Cunha FQ, de Oliveira JR. Anti-inflammatory effects of red pepper (Capsicum baccatum) on carrageenan- and antigen-induced inflammation. J Pharm Pharmacol 2010; 60:473-8. [DOI: 10.1211/jpp.60.4.0010] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
Inflammation is a pivotal component of a variety of diseases, such as atherosclerosis and tumour progression. Various naturally occurring phytochemicals exhibit anti-inflammatory activity and are considered to be potential drug candidates against inflammation-related pathological processes. Capsicum baccatum L. var. pendulum (Willd.) Eshbaugh (Solanaceae) is the most consumed species in Brazil, and its compounds, such as capsaicinoids, have been found to inhibit the inflammatory process. However, the anti-inflammatory effects of C. baccatum have not been characterized. Thus, this study was designed to evaluate the effects of C. baccatum juice in animal models of acute inflammation induced by carrageenan and immune inflammation induced by methylated bovine serum albumin. Pretreatment (30 min) of rats with pepper juice (0.25–2.0 g kg−1) significantly decreased leucocyte and neutrophil migration, exudate volume and protein and LDH concentration in pleural exudates of a pleurisy model. This juice also inhibited neutrophil migration and reduced the vascular permeability on carrageenan-induced peritonitis in mice. C. baccatum juice also reduced neutrophil recruitment and exudate levels of pro-inflammatory cytokines TNF-α and IL-1β in mouse inflammatory immune peritonitis. Furthermore, we demonstrated that the main constituent of C. baccatum juice, as extracted with chloroform, is capsaicin. In agreement with this, capsaicin was able to inhibit the neutrophil migration towards the inflammatory focus. To our knowledge, this is the first demonstration of the anti-inflammatory effect of C. baccatum juice and our data suggest that this effect may be induced by capsaicin. Moreover, the anti-inflammatory effect induced by red pepper may be by inhibition of pro-inflammatory cytokine production at the inflammatory site.
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Affiliation(s)
- Fernando Spiller
- Department of Pharmacology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Márcia K Alves
- Laboratory of Cellular Biophysics and Inflammation, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Sílvio M Vieira
- Department of Pharmacology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
- Laboratory of Pharmacology, Instituto Nacional de Pesquisas da Amazonia, Manaus, AM, Brazil
| | - Toni A Carvalho
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Carlos E Leite
- Laboratory of Cellular Biophysics and Inflammation, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Adroaldo Lunardelli
- Laboratory of Cellular Biophysics and Inflammation, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - José A Poloni
- Laboratory of Cellular Biophysics and Inflammation, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Jarbas R de Oliveira
- Laboratory of Cellular Biophysics and Inflammation, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
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Lunardelli A, Mengotti P, Pesavento A, Sverzut A, Zadini A. The Brief Neuropsychological Screening (BNS): valuation of its clinical validity. Eur J Phys Rehabil Med 2009; 45:85-91. [PMID: 19078905] [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: 05/27/2023]
Abstract
The assessment of functional and cognitive efficiency of acute brain injured patients represents a relevant innovation in the rehabilitative approach to stroke patients. Indeed, the identification of severe cognitive difficulties early in the recovery process can be an important prognostic factor for the evolution of the disorders themselves. The aim of the present study was to describe a new diagnostic tool that rapidly assesses the cognitive efficiency of acute patients suffering from a cerebral vascular accident. The Brief Neuropsychological Screening (BNS) has been designed for the detection of either the presence or absence of damage in different cognitive areas, with particular emphasis to those most frequently occurring after a stroke, such as aphasia, apraxia, agnosia or eminattention. Data from 250 normal adult subjects and from a group of 150 acute cerebrovascular inpatients are also presented that confirm the validity of the BNS in discriminating acute patients affected by cognitive impairments from those free of cognitive disruption, and supports its prognostic value in predicting cognitive recovery over time.
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Affiliation(s)
- A Lunardelli
- Unit of Rehabilitation Medicine Ospedali Riuniti, Trieste, Italy.
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17
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Boschi ES, Leite CE, Saciura VC, Caberlon E, Lunardelli A, Bitencourt S, Melo DAS, Oliveira JR. Anti-Inflammatory effects of low-level laser therapy (660 nm) in the early phase in carrageenan-induced pleurisy in rat. Lasers Surg Med 2009; 40:500-8. [PMID: 18727002 DOI: 10.1002/lsm.20658] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND AND OBJECTIVE In the classic model of pleurisy there is little evidence about the anti-inflammatory effects of low-level laser therapy (LLLT) as well the dosage characteristics, such as wavelength, total energy, number and pattern of treatment. In this study we investigated the potential effects of LLLT on modulating the pro-inflammatory and anti-inflammatory mediators of acute inflammation in a rat pleurisy model. STUDY DESIGN/MATERIALS AND METHODS A sample of 48 female Wistar rats were divided into control and experiential groups. An inflammation was induced by carrageenan (0.2 ml) injected into the pleural cavity. At 1, 2, and 3 hours after induction a continuous wave (20 mW) diode laser of the InGaAlP (660 nm) type was used in the four laser groups with different doses and treatment patterns. One group received a single dose of 2.1 J and the other three groups received a total energy of 0.9, 2.1, and 4.2 J. Four hours later the exudate volume, total and differential leukocytes, protein concentration, NO, IL-6, IL-10, TNF-alpha, and MCP-1 were measured from the aspirated liquid. RESULTS All the treatment patterns and quantity of energy studied show significant reduction of the exudate volume (P<0.05). Using energy of 0.9 J only NO, IL-6, MCP-1 and IL-10 are significantly reduced (P<0.05). On the other hand, higher energies (2.1 and 4.2 J) significantly reduce all variables independently of the treatment pattern. The neutrophil migration has a straight correlation with the TNF-alpha (r = 0.551) and NO (r = 0.549) concentration. CONCLUSIONS LLLT-660 nm induced an anti-inflammatory effect characterized by inhibition of either total or differential leukocyte influx, exudation, total protein, NO, IL-6, MCP-1, IL-10, and TNF-alpha, in a dose-dependent manner. Under these conditions, laser treatment with 2.1 J was more effective than 0.9 and 4.2 J.
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Affiliation(s)
- Emerson S Boschi
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga 6681 prédio 12C sala 263, CEP 90619-900 Porto Alegre, RS, Brazil
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18
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Leite CE, Petersen GO, Lunardelli A, Thiesen FV. A high-performance liquid chromatography method for the determination of carbamazepine and carbamazepine-10,11-epoxide and its comparison with chemiluminescent immunoassay. Clin Chem Lab Med 2009; 47:458-63. [DOI: 10.1515/cclm.2009.105] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Lopes RP, Lunardelli A, Preissler T, Leite CE, Alves-Filho JCF, Nunes FB, de Oliveira JR, Bauer ME. The effects of fructose-1,6-bisphosphate and dexamethasone on acute inflammation and T-cell proliferation. Inflamm Res 2006; 55:354-8. [PMID: 16977383 DOI: 10.1007/s00011-006-6044-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [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: 10/24/2022] Open
Abstract
OBJECTIVE AND DESIGN Chronic glucocorticoid treatment is associated with pharmacological resistance. We investigated the auxiliary effects of fructose-1,6-bisphosphate (FBP) on dexamethasone (DEX)-related modulation of inflammation and T-cell proliferation. METHODS Acute inflammation (pleurisy) was induced by injection of carrageenan into the pleural cavity of rats that were treated in vivo with DEX s. c. and FBP i. p. Peripheral blood mononuclear cells were isolated and T-cell sensitivity to FBP and DEX was evaluated in vitro. RESULTS FBP and DEX reduced the exudate volume, protein concentration and neutrophils in the pleural cavity. However no synergistic effects were observed when these compounds were tested simultaneously. In contrast, both compounds dose-dependently and synergistically suppressed T-cell proliferation. CONCLUSION These data suggest that FBP may be beneficial as auxiliary drug for the treatment of patients with acquired glucocorticoid resistance.
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Affiliation(s)
- R Pestana Lopes
- Laboratory of Cellular and Molecular Immunology, Institute of Biomedical Research, Hospital São Lucas, PUCRS, Av. Ipiranga 6690, 2 andar-Caixa Postal 1429. 90., 610-000, Porto Alegre, RS, Brazil
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20
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Machado DP, Nunes FB, Simões Pires MG, D'Avila LC, Leite CE, Ruschel RE, da Cunha AA, Saciura VC, Poloni JAT, Lunardelli A, de Oliveira JR, Alves Filho JCF, Cunha FQ, Dias FS, Poli de Figueiredo CE. Effects of beta-lactam antibiotics and L-arginine in the treatment of experimental sepsis in rats. Int J Antimicrob Agents 2006; 28:478-80. [PMID: 17049210 DOI: 10.1016/j.ijantimicag.2006.07.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2006] [Revised: 07/19/2006] [Accepted: 07/20/2006] [Indexed: 11/29/2022]
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Abstract
OBJECTIVES In the present study we assessed the inflammatory potential of venom obtained from caterpillar genus Dirphia in an acute model of lung injury. MATERIAL AND METHODS Injection of extract from the bristles of Dirphia sp. (EBD) into the pleural cavity of rats elicited an acute inflammation response characterized by fluid accumulation which contained a large number of polymorphonuclear neutrophils (PMNs). RESULTS The results show that EBD induces an inflammatory response, with a significant increase in PMNs, exudate and nitric oxide within 4 h after a 0.04 mg/kg dose. The administration of anti-inflammatory drugs (fructose-1,6-bisphosphate, dexamethasone, rofecoxib, sodium diclofenac and pyrilamine) significantly reduced the inflammatory effect of EBD. CONCLUSIONS EBD causes an inflammatory reaction in the pleural cavity of rats involving a variety of inflammatory mediators, its action mechanism probably involving cellular injury and the exacerbated induction of cytokines and nitric oxide.
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Affiliation(s)
- A Lunardelli
- Laboratório de Pesquisa em Biofísica, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga 6681 prédio 12C sala 263, CEP 90619-900, Porto Alegre, RS, Brazil
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22
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Nunes FB, Gaspareto PB, Santos RCV, de Assis M, Graziottin CM, Biolchi V, Alves Filho JCF, Lunardelli A, Avila LD, Pires MGS, Wächter PH, De Oliveira JR. Intravenous toxicity of fructose-1,6-bisphosphate in rats. Toxicol Lett 2003; 143:73-81. [PMID: 12697383 DOI: 10.1016/s0378-4274(03)00075-4] [Citation(s) in RCA: 9] [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] [Indexed: 11/18/2022]
Abstract
Fructose-1,6-bisphosphate (FBP) is a bisphosphorilated sugar with a protective action against events that lead to cellular damage. The toxicity of the drug was assessed when administered intravenously in Wistar rats in doses of between 250 and 4000 mg/kg. Ionic calcium, total calcium, inorganic serum phosphate and the electrocardiographic profile of these animals were assessed. The lethal dose (LD(50)) was established by means of PROBIT processing. There was no reduction in the levels of total calcium, with the administration of increased doses of FBP, although there was a significant reduction in the levels of ionic calcium in those groups that received 250 mg/kg and over. The serum phosphate showed a significant statistical increase in those groups that received 750 mg/kg and over. The LD(50) obtained in 24 h was 1068 mg/kg. Though it was not possible to elucidate the toxic mechanism of FBP, the electrocardiogram (ECG) showed that all the rats died of cardiac arrest.
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Affiliation(s)
- Fernanda Bordignon Nunes
- Laboratório de Pesquisa em Biofisica, Departamento de Ciências Fisiológicas, Faculdade de Biociências, Pontificia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
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23
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Bordignon Nunes F, Meier Graziottin C, Alves Filho JCF, Lunardelli A, Caberlon E, Peres A, Rodrigues De Oliveira J. Immunomodulatory effect of fructose-1,6-bisphosphate on T-lymphocytes. Int Immunopharmacol 2003; 3:267-72. [PMID: 12586607 DOI: 10.1016/s1567-5769(02)00295-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [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: 11/20/2022]
Abstract
Sepsis remains an important and life-threatening problem, and is the most common cause of death in the intensive care unit. One promising therapeutic candidate for protection against injury in sepsis is fructose-1,6-bisphosphate (FBP), a high-energy glycolytic pathway intermediate. The objective of the study was to establish a role for FBP on the immune system, especially in lymphocyte proliferation. Peripheral blood mononuclear cells (PBMCs) were isolated from the blood of healthy humans by gradient centrifugation. T-lymphocytes were stimulated for 96 h with phytohemagglutinin (PHA) and varying concentration of FBP. Fructose-1,6-bisphosphate at concentrations between 1.2 and 10 mM decreased proliferation of T-lymphocytes and reduced the viability only at concentrations 5.0 and 10 mM. The levels of soluble IL-2 receptor were reduced at FBP concentrations between 1.2 and 10 mM. In conclusion, this study demonstrates that FBP has important effect on immunomodulatory and this result can be correlated with the protection against injury in sepsis.
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Affiliation(s)
- Fernanda Bordignon Nunes
- Laboratório de Pesquisa em Biofísica, Departamento de Ciências Fisiológicas, Faculdade de Biociências, Pontifícia Universidade Católica do Rio Grande do Sul, Av Ipiranga, 6681-Prédio 12C-Sala 263-CP 1429, Porto Alegre, RS, Brazil.
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25
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Nunes FB, Graziottin CM, Alves Filho JCF, Lunardelli A, Pires MGS, Wächter PH, De Oliveira JR. An assessment of fructose-1,6-bisphosphate as an antimicrobial and anti-inflammatory agent in sepsis. Pharmacol Res 2003; 47:35-41. [PMID: 12526859 DOI: 10.1016/s1043-6618(02)00255-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Tissue lesion mechanisms provoked by sepsis include the infectious process, inflammation, and cellular energy deficit. We chose to test fructose-1,6-bisphosphate (FBP) because of its possible anti-inflammatory and antimicrobial actions. Wistar rats were used and divided into three experimental groups: a control group (n=10), in which a capsule was introduced into the peritoneum of the animals; a septic group (n=10), in which a capsule containing non-sterile fecal matter was introduced together with Escherichia coli (1.5 x 10(9)CFU); and a septic group treated with FBP 500 mg/kg (n=10). The blood cell tests revealed that levels of leukocytes increased significantly in the septic group when compared to both the septic group treated with FBP and the control group. The blood cultures were 100% positive in both the septic group and the septic group treated with bisphosphorylated sugar. The antibiogram only revealed an inhibitory halo in the case of the antibiotic ampicillin, there was no such indication for FBP. The anti-inflammatory power of FBP remained at 60% for 5 h in the rats that received the carrageenan injection. What is more, the sugar reduced the levels of ionic calcium in relation to the control group. This data proves the validity of using FBP in the treatment of sepsis, possibly due to its anti-inflammatory rather than antimicrobial action.
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Affiliation(s)
- Fernanda B Nunes
- Laboratório de Pesquisa em Biofísica, Departamento de Ciências Fisiológicas, Faculdade de Biociências, Pontifícia Universidade Católica do Rio Grande do Sul, Rio Grande do Sul 91530-170, Brazil.
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Moelter ST, Hill SK, Ragland JD, Lunardelli A, Gur RC, Gur RE, Moberg PJ. Controlled and automatic processing during animal word list generation in schizophrenia. Neuropsychology 2001; 15:502-9. [PMID: 11761039] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
Controlled and automatic aspects of semantic-associative functioning in schizophrenia were investigated by evaluating performance on animal word list generation (WLG). Responses from control (n = 47) and patient (n = 38) participants were subjected to multidimensional scaling (MDS), cluster analysis (CA), and indices on the basis of number of shared attributes (SA) between consecutive responses. Patient MDS results accounted for less variance and contained more error than control data. CA results yielded fewer and less clear animal-response subgroups among patients yet demonstrated intact associations among strongly related exemplars. The SA indices revealed better clustering and more effective switching among response clusters in controls than patients. Results suggest that animal WLG in schizophrenia is compromised both by aberrant automatic semantic-associative network activation and by controlled processes such as search, access, and selection. This pattern is consistent with prominent frontotemporal pathology evident in the disorder.
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Affiliation(s)
- S T Moelter
- Department of Psychiatry, University of Pennsylvania Health System, USA.
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Moelter S, Hill S, Ragland J, Lunardelli A, Gur R, Gur R, Moberg P. Executive and semantic system impairment during animal word list generation in schizophrenia. Arch Clin Neuropsychol 2000. [DOI: 10.1093/arclin/15.8.760a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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