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Sacramento JP, Oliveira AS, Leao AE, Fonseca AP, Coelho SG, Tomich TR, Machado FS, Ferreira AL, Campos MM, Silvi RR, Rowntree JE, Rodrigues JPP, Pereira LGR. Energy requirement for primiparous Holstein × Gyr crossbred dairy cows. J Dairy Sci 2024:S0022-0302(24)00732-X. [PMID: 38608938 DOI: 10.3168/jds.2023-24393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 03/01/2024] [Indexed: 04/14/2024]
Abstract
Our objective was to estimate the requirements of metabolizable energy (ME) and net energy for the maintenance (NEm) of lactating and dry cows, the efficiency of ME utilization for milk production (kl) and tissue gain (kg), and the use of body energy mobilization for milk production (kt) throughout the lactation of primiparous crossbred Holstein × Gyr cows, using open-circuit respiration chambers. Twenty-nine primiparous Holstein × Gyr crossbred cows with an initial BW averaging 563 ± 40.1 kg and 2.5 ± 0.09 years old were used throughout lactation and dry periods. The cows were kept non-pregnant throughout the study to eliminate possible confounding factors. Apparent digestibility assays, followed by calorimeter measurements, were performed 6 times throughout the lactation period. In the dry-off period, the cows were also evaluated but fed with restricted intake (DMI = 1.1% BW/d) to achieve heat production close to maintenance. After 21 d of diet adaptation, an apparent digestibility assay followed by calorimeter measurements was performed. Parameter estimates for lactation period were obtained by mixed models including lactation stage as repeated measures. For restricted feeding at dry-off and fasting period assays, the requirements were estimated by exponential regression. For whole lactation, the values of MEm and NEm were 0.588 and 0.395 MJ/BW0.75, respectively. The efficiencies klkgkt were 0.672, 0.771, and 0.814, respectively. However, MEm and NEm were higher in early and mid-lactation than late, while kl was higher in early than other lactation stages. Dry and non-pregnant cows had MEm of 0.434 MJ/BW0.75 and NEm of 0.351 MJ/BW0.75 for maintenance level, and MEm of 0.396 MJ/BW0.75 and NEm of 0.345 MJ/BW0.75 for fasting metabolism level and efficiency of ME utilization for maintenance was 0.80. Our findings confirmed that F1 crossbred Holstein × Gyr dairy cows have differences in energy requirement and efficiency throughout the lactation stages, suggesting the use of different values in each stage. The estimated values of energy requirement for maintenance and efficiencies for primiparous lactating crossbred Holstein × Gyr were similar to those reported in the literature in specific studies and requirements systems.
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Affiliation(s)
- J P Sacramento
- Department of Bioengineering, Universidade Federal de São João del Rei, 36307-352, São João dei Rei, Minas Gerais, Brazil; Department of Animal Science, Michigan State University, Eats Lansing, MI 48824, USA
| | - A S Oliveira
- Dairy Cattle Research Laboratory, Universidade Federal do Mato Grosso, 78557-267, Sinop, Mato Grosso, Brazil
| | - A E Leao
- Department of Animal Science, School of Veterinary Medicine, Universidade Federal de Minas Gerais, 30161-970, Belo Horizonte, Minas Gerais, Brazil
| | - A P Fonseca
- Department of Animal Science, School of Veterinary Medicine, Universidade Federal de Minas Gerais, 30161-970, Belo Horizonte, Minas Gerais, Brazil
| | - S G Coelho
- Department of Animal Science, School of Veterinary Medicine, Universidade Federal de Minas Gerais, 30161-970, Belo Horizonte, Minas Gerais, Brazil
| | - T R Tomich
- Brazilian Agricultural Research Corporation - Embrapa Dairy Cattle, 36038-330, Juiz de Fora, Minas Gerais, Brazil
| | - F S Machado
- Brazilian Agricultural Research Corporation - Embrapa Dairy Cattle, 36038-330, Juiz de Fora, Minas Gerais, Brazil
| | - A L Ferreira
- Brazilian Agricultural Research Corporation - Embrapa Dairy Cattle, 36038-330, Juiz de Fora, Minas Gerais, Brazil
| | - M M Campos
- Brazilian Agricultural Research Corporation - Embrapa Dairy Cattle, 36038-330, Juiz de Fora, Minas Gerais, Brazil
| | - R R Silvi
- Santa Cruz State University, Ilhéus, Bahia, Brazil, 45662-900
| | - J E Rowntree
- Department of Animal Science, Michigan State University, Eats Lansing, MI 48824, USA
| | - J P P Rodrigues
- Department of Animal Production, Universidade Federal Rural do Rio de Janeiro, 23897-000, Seropédica, Rio de Janeiro, Brazil
| | - L G R Pereira
- Brazilian Agricultural Research Corporation - Embrapa Dairy Cattle, 36038-330, Juiz de Fora, Minas Gerais, Brazil.
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Marcondes MI, Provazi FP, Silvestre T, Silva AL, Valadares Filho SC, Campos MM, Machado FS, Rotta PP. Protein requirements for pregnant dairy cows. J Dairy Sci 2023; 106:8821-8834. [PMID: 37678777 DOI: 10.3168/jds.2023-23321] [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: 02/01/2023] [Accepted: 07/20/2023] [Indexed: 09/09/2023]
Abstract
We aimed to estimate the protein requirements of pregnant Holstein × Gyr cows. A total of 61 Holstein × Gyr (HG) cows were used, with an average initial body weight (BW) of 480 ± 10.1 kg and age 5 ± 0.5 yr. Cows were divided into 3 groups: pregnant (n = 43), nonpregnant (n = 12), and baseline (n = 6). Baseline animals were slaughtered before starting the experiment to estimate the initial body composition of the remaining animals. Pregnant and nonpregnant cows received 2 diets: maintenance and ad libitum. Pregnant cows were slaughtered at 139, 199, 241, and 268 gestation days (GD). First, we used data only from nonpregnant cows to determine the requirements for maintenance and growth in adult cows. The requirements of metabolizable protein for maintenance (MPm; grams of empty metabolic BW [EBW0.75] per day) were estimated using a linear regression between the metabolizable protein intake (MPI, g/d) and average daily gain (g/d), and the MPm was defined as the intercept divided by the average metabolic BW. Net protein requirements for gain (NPg; g/d) were estimated by the first derivative of the allometric equation between final crude protein in the body (kg) and the final empty BW (EBW; kg). The efficiency of use of metabolizable protein for gain (k) was calculated from the regression between the retained protein (g EBW0.75/d) and the MPI (g EBW0.75/d), and k was the slope of this regression. The MPI was estimated by combining microbial protein synthesis (purine derivatives) with the digestible rumen undegradable protein [(total protein intake - rumen-degradable protein) × intestinal digestibility]. Second, an exponential model was used to fit the protein accumulation in the gestational components in the function of GD. The first derivative of that model was considered the net requirement for gestation (NPgest). The efficiency of protein utilization for gestation (kgest) was calculated by the iterative method using the equation Δ = MPI - (MPm + NPg/kg + NPgest/kgest), where kg is efficiency of protein utilization for gain. The iteration was performed aiming at a zero deviation between observed MPI and metabolizable protein (MP) estimated by the requirements determined herein. We obtained a value of 3.88 g EBW0.75/d for MPm. The estimation of NPg can be calculated according to the following equation: NPg = 0.716 × (EBWopen-0.308) × EBGc, where EBWopen is the EBW (kg) for nonpregnant animals and EBGc is the empty body gain (kg/d) corrected for the gestational component. The k was determined as 0.347. The NPgest requirements were determined as NPgest (g/d) = 0.0008722 × exp(0.01784 × GD) × (calf weight/35). The kgest was 0.625. It is important to highlight that different methods of MP estimates should not be mixed and that the proposed method requires the estimation of microbial protein (estimated via urinary estimates), which might limit practical application. In conclusion, new studies should be conducted to validate our results and the methodology adopted to determine protein requirements for pregnancy in dairy cows. Due to the pattern of protein accumulation in the gestational components, we suggest an exponential model to describe protein requirements for pregnancy for dairy cows.
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Affiliation(s)
- M I Marcondes
- Department of Animal Sciences, Washington State University, Pullman, WA 99164.
| | - F P Provazi
- Department of Animal Science, Universidade Federal de Viçosa, 36570-000 Viçosa, Minas Gerais, Brazil
| | - T Silvestre
- Department of Animal Sciences, Washington State University, Pullman, WA 99164
| | - A L Silva
- Department of Animal Science, Universidade Federal de Viçosa, 36570-000 Viçosa, Minas Gerais, Brazil
| | - S C Valadares Filho
- Department of Animal Science, Universidade Federal de Viçosa, 36570-000 Viçosa, Minas Gerais, Brazil
| | - M M Campos
- Brazilian Agricultural Research Corporation, National Center for Research on Dairy Cattle, Minas Gerais, 36038-330, Brazil
| | - F S Machado
- Brazilian Agricultural Research Corporation, National Center for Research on Dairy Cattle, Minas Gerais, 36038-330, Brazil
| | - P P Rotta
- Department of Animal Sciences, Washington State University, Pullman, WA 99164
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Antunes FTT, Campos MM, Carvalho VDPR, da Silva Junior CA, Magno LAV, de Souza AH, Gomez MV. Current Drug Development Overview: Targeting Voltage-Gated Calcium Channels for the Treatment of Pain. Int J Mol Sci 2023; 24:ijms24119223. [PMID: 37298174 DOI: 10.3390/ijms24119223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 04/29/2023] [Accepted: 05/02/2023] [Indexed: 06/12/2023] Open
Abstract
Voltage-gated calcium channels (VGCCs) are targeted to treat pain conditions. Since the discovery of their relation to pain processing control, they are investigated to find new strategies for better pain control. This review provides an overview of naturally based and synthetic VGCC blockers, highlighting new evidence on the development of drugs focusing on the VGCC subtypes as well as mixed targets with pre-clinical and clinical analgesic effects.
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Affiliation(s)
- Flavia Tasmin Techera Antunes
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB T2N 1N4, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Maria Martha Campos
- Programa de Pós-Graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre 90619-900, RS, Brazil
| | | | | | - Luiz Alexandre Viana Magno
- Programa de Pós-Graduação em Ciências da Saúde, Faculdade Ciências Médicas de Minas Gerais (FCMMG), Belo Horizonte 30110-005, MG, Brazil
| | - Alessandra Hubner de Souza
- Programa de Pós-Graduação em Ciências da Saúde, Faculdade Ciências Médicas de Minas Gerais (FCMMG), Belo Horizonte 30110-005, MG, Brazil
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Stys LPA, Böttcher DE, Scarparo RK, Gonçalves Waltrick SB, de Figueiredo JAP, Gomes MS, Campos MM. Serum levels of inflammatory markers and HbA1c in patients with type 2 diabetes and apical periodontitis: Preliminary findings. AUST ENDOD J 2021; 48:105-115. [PMID: 34608703 DOI: 10.1111/aej.12569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 09/03/2021] [Accepted: 09/19/2021] [Indexed: 12/15/2022]
Abstract
This pilot study assessed the glycaemic control and the serum levels of inflammatory mediators in type 2 diabetes (T2DM) patients with apical periodontitis (AP). Thirty individuals were divided into four groups: Healthy (H); with AP (AP); with T2DM (T2DM); and with T2DM and AP (T2DM-AP). Demographic and pharmacological data were registered. The body mass index (BMI) and the levels of glycated haemoglobin (HbA1c) and IL-1β, IL-6, IL-10, CCL3 and CCL4 were evaluated. AP areas were determined radiographically. Mean age was 64 ± 12 years, with 63% females. Most T2DM patients were under treatment with metformin and antihypertensives. BMI and H1bAc were significantly higher in T2DM patients in relation to H and AP groups. The AP areas were larger in the T2DM-AP group, compared with the AP group. These preliminary findings suggest no influence of AP on glycaemic control or inflammatory levels amongst T2DM patients, although T2DM increased the AP severity.
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Affiliation(s)
- Liliana Preto Agostini Stys
- Programa de Pós-graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.,Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | - Daiana Elisabeth Böttcher
- Programa de Pós-graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.,Curso de Graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Silvana Beltrami Gonçalves Waltrick
- Curso de Graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Maximiliano Schünke Gomes
- Programa de Pós-graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.,Curso de Graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.,Centro Médico e Odontológico da Polícia Militar do Rio Grande do Sul, Porto Alegre, Brazil
| | - Maria Martha Campos
- Programa de Pós-graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.,Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.,Curso de Graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
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Ribeiro A, Carvalho ALSHD, Koth VS, Campos MM. Tumores de Glândulas Salivares: Análise Retrospectiva de Dez Anos em um Hospital Escola Brasileiro. Rev Bras Cancerol 2021. [DOI: 10.32635/2176-9745.rbc.2021v67n4.1452] [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: 10/20/2022] Open
Abstract
Introdução: Os tumores que afetam as glândulas salivares apresentam vasta diversidade morfológica. Objetivo: Identificar a prevalência de neoplasias de glândulas salivares em pacientes atendidos no Hospital São Lucas da Pontifícia Universidade Católica do Rio Grande do Sul (HSL-PUCRS), em Porto Alegre (RS), no período de 2007 a 2016. Método: Estudo retrospectivo por meio da análise de 201 arquivos do Departamento de Patologia do HSL-PUCRS. Resultados: Foram encontrados 73 casos de neoplasias de glândulas salivares e os prontuários eletrônicos e físicos dos casos selecionados foram analisados. Dos 73 casos, 56 (76,7%) eram de neoplasias benignas e 17 (23,3%) de neoplasias malignas. A faixa etária com maior número de casos foi entre 41 e 60 anos e o sexo feminino apresentou a maior prevalência com 54,8%. A glândula parótida apresentou maior prevalência, perfazendo 72,6% dos casos. O tipo neoplásico mais prevalente foi o adenoma pleomórfico, com 53,4%. O padrão de distribuição das neoplasias de glândulas salivares foi semelhante ao encontrado em outras Regiões do Brasil. Conclusão: As glândulas salivares maiores foram as mais afetadas pelos processos neoplásicos. Adenoma pleomórfico e carcinoma adenoide cístico foram os tumores benignos e malignos mais frequentes, respectivamente, e a glândula parótida foi o local mais acometido. Com base na literatura prévia, esses resultados permitem inferir que algumas características demográficas (por exemplo, sexo e idade) variam entre as diferentes Regiões geográficas.
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de Souza Maciel I, Azevedo VM, Oliboni P, Campos MM. Blockade of the kinin B 1 receptor counteracts the depressive-like behaviour and mechanical allodynia in ovariectomised mice. Behav Brain Res 2021; 412:113439. [PMID: 34197868 DOI: 10.1016/j.bbr.2021.113439] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 05/31/2021] [Accepted: 06/25/2021] [Indexed: 12/27/2022]
Abstract
Menopause is related to a decline in ovarian oestrogen production, affecting the perception of the somatosensory stimuli, changing the immune-inflammatory systems, and triggering depressive symptoms. It has been demonstrated that the inhibition of the kinin B1 and B2 receptors (B1R and B2R) prevented the depressive-like behaviour and the mechanical allodynia that was induced by immune-inflammatory mediators in mice. However, there is no evidence regarding the role of the kinin receptors in the depressive-like and nociceptive behaviour in female mice that were subjected to bilateral ovariectomy (OVX). This study has shown that the OVX mice developed time-related mechanical allodynia, together with an increased immobility time as indicative of depression. Both of these changes were reduced by the genetic deletion of B1R, or by the pharmacological blockade of the selective kinin B1R antagonist R-715 (acute, i.p.). The genetic deletion or the pharmacological inhibition of B2R (HOE 140, i.p.) did not prevent the OVX-elicited behavioural changes. The data has suggested a particular modulation of kinin B1R in the nociceptive and depressive-like behaviour in the OVX mice. The selective inhibition of the B1R receptor may be a new pharmacological target for treating pain and depression symptoms in women during the perimenopause/menopause period.
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Affiliation(s)
- Izaque de Souza Maciel
- Programa de Pós-graduação em Medicina e Ciências da Saúde, Escola de Medicina, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Escola de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
| | - Vanessa Machado Azevedo
- Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Patricia Oliboni
- Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Programa de Pós-graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Maria Martha Campos
- Programa de Pós-graduação em Medicina e Ciências da Saúde, Escola de Medicina, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Programa de Pós-graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
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Pedron C, Antunes FTT, Rebelo IN, Campos MM, Correa ÁP, Klein CP, de Oliveira IB, do Nascimento Cordeiro M, Gomez MV, de Souza AH. Phoneutria nigriventer Tx3-3 peptide toxin reduces fibromyalgia symptoms in mice. Neuropeptides 2021; 85:102094. [PMID: 33171335 DOI: 10.1016/j.npep.2020.102094] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 09/08/2020] [Accepted: 09/10/2020] [Indexed: 12/22/2022]
Abstract
Fibromyalgia is characterized by the amplification of central nervous system pain with concomitant fatigue, sleep, mood disorders, depression, and anxiety. It needs extensive pharmacological therapy. In the present study, Swiss mice were treated with reserpine (0.25 mg/kg, s.c.) over three consecutive days, in order to reproduce the pathogenic process of fibromyalgia. On day 4, the administrations of the Tx3-3 toxin produced significant antinociception in the mechanical allodynia (87.16% ±12.7%) and thermal hyperalgesia (49.46% ± 10.6%) tests when compared with the PBS group. The effects produced by the classical analgesics (duloxetine 30 mg/kg, pramipexole 1 mg/kg, and pregabalin 30 mg/kg, p.o., respectively) in both of the tests also demonstrated antinociception. The administrations were able to increase the levels of the biogenic amines (5-HTP and DE) in the brain. The treatments with pramipexole and pregabalin, but not duloxetine, decreased the immobility time in the FM-induced animals that were submitted to the forced swimming test; however, the Tx3-3 toxin (87.45% ± 4.3%) showed better results. Taken together, the data has provided novel evidence of the ability of the Tx3-3 toxin to reduce painful and depressive symptoms, indicating that it may have significant potential in the treatment of FM.
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Affiliation(s)
- Claudia Pedron
- Graduate Program in Cellular and Molecular Biology for the Health Sciences, Lutheran University of Brazil, Canoas, Rio Grande do Sul 92425-900, Brazil
| | - Flavia Tasmin Techera Antunes
- Graduate Program in Cellular and Molecular Biology for the Health Sciences, Lutheran University of Brazil, Canoas, Rio Grande do Sul 92425-900, Brazil
| | - Isadora Nunes Rebelo
- Department of Pharmacy, Lutheran University of Brazil, Canoas, Rio Grande do Sul 92425-900, Brazil
| | - Maria Martha Campos
- Toxicology and Pharmacology Research Center, School of Health Sciences, PUCRS, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
| | - Áurea Pandolfo Correa
- Department of Pharmacy, Lutheran University of Brazil, Canoas, Rio Grande do Sul 92425-900, Brazil
| | - Caroline Peres Klein
- Toxicology and Pharmacology Research Center, School of Health Sciences, PUCRS, Porto Alegre, Rio Grande do Sul 90619-900, Brazil
| | | | | | - Marcus Vinícius Gomez
- Grupo Santa Casa de Belo Horizonte, Núcleo de Pós-Graduação, Belo Horizonte, Minas Gerais 30150-240, Brazil
| | - Alessandra Hubner de Souza
- Graduate Program in Cellular and Molecular Biology for the Health Sciences, Lutheran University of Brazil, Canoas, Rio Grande do Sul 92425-900, Brazil; Department of Pharmacy, Lutheran University of Brazil, Canoas, Rio Grande do Sul 92425-900, Brazil.
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Dagnino APA, Chagastelles PC, Medeiros RP, Estrázulas M, Kist LW, Bogo MR, Weber JBB, Campos MM, Silva JB. Neural Regenerative Potential of Stem Cells Derived from the Tooth Apical Papilla. Stem Cells Dev 2020; 29:1479-1496. [PMID: 32988295 DOI: 10.1089/scd.2020.0121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The regenerative effects of stem cells derived from dental tissues have been previously investigated. This study assessed the potential of human tooth stem cells from apical papilla (SCAP) on nerve regeneration. The SCAP collected from nine individuals were characterized and polarized by exposure to interferon-γ (IFN-γ). IFN-γ increased kynurenine and interleukin-6 (IL-6) production by SCAP, without affecting the cell viability. IFN-γ-primed SCAP exhibited a decrease of brain-derived neurotrophic factor (BDNF) mRNA levels, followed by an upregulation of glial cell-derived neurotrophic factor mRNA. Ex vivo, the co-culture of SCAP with neurons isolated from the rat dorsal root ganglion induced neurite outgrowth, accompanied by increased BDNF secretion, irrespective of IFN-γ priming. In vivo, the local application of SCAP reduced the mechanical and thermal hypersensitivity in Wistar rats that had been submitted to sciatic chronic constriction injury. The SCAP also reduced the pain scores, according to the evaluation of the Grimace scale, partially restoring the myelin damage and BDNF immunopositivity secondary to nerve lesion. Altogether, our results provide novel evidence about the regenerative effects of human SCAP, indicating their potential to handle nerve injury-related complications.
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Affiliation(s)
- Ana Paula Aquistapase Dagnino
- Programa de Pós-Graduação em Medicina e Ciências da Saúde, Escola de Medicina, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Pedro Cesar Chagastelles
- Programa de Pós-Graduação em Medicina e Ciências da Saúde, Escola de Medicina, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Renata Priscila Medeiros
- Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Programa de Pós-Graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Marina Estrázulas
- Programa de Pós-Graduação em Medicina e Ciências da Saúde, Escola de Medicina, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Luiza Wilges Kist
- Programa de Pós-Graduação em Biologia Celular e Molecular, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Laboratório de Biologia Genômica e Molecular, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Maurício Reis Bogo
- Programa de Pós-Graduação em Medicina e Ciências da Saúde, Escola de Medicina, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Programa de Pós-Graduação em Biologia Celular e Molecular, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Laboratório de Biologia Genômica e Molecular, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - João Batista Blessmann Weber
- Programa de Pós-Graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Maria Martha Campos
- Programa de Pós-Graduação em Medicina e Ciências da Saúde, Escola de Medicina, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Programa de Pós-Graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Programa de Pós-Graduação em Biologia Celular e Molecular, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Jefferson Braga Silva
- Programa de Pós-Graduação em Medicina e Ciências da Saúde, Escola de Medicina, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
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9
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Teichert-Filho R, Baldasso CN, Campos MM, Gomes MS. Protective device to reduce aerosol dispersion in dental clinics during the COVID-19 pandemic. Int Endod J 2020; 53:1588-1597. [PMID: 32735690 PMCID: PMC7436703 DOI: 10.1111/iej.13373] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [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: 05/25/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 01/25/2023]
Abstract
AIM To describe the use of a new protective device to reduce aerosol dispersion in dental clinics during the COVID-19 pandemic. METHODOLOGY The device consists of a rigid translucent acrylic structure (methyl polymethacrylate), adjusted to the dental chair, involving the patient's head, neck and chest. There is also a piping system to generate negative pressure, for aspiration and filtering of the air inside the device chamber. The operator works through small holes in the acrylic structure, to reduce contact with the microparticles arising from aerosols during dental procedures. Simulated dental procedures using a fluorescent dye in the water of the dental equipment were carried out, with and without the use of the device. The presence of the dye was analysed at various locations, such as on personal protective equipment (PPE), the dental chair and on the clinic floor. RESULTS In the simulated dental procedure without the device, the dye was obvious on surgical gloves, aprons (waist, chest, legs, fists) and face shields, as well as on the dental chair (backrest, light reflector) and clinic floor. In the simulated dental procedure using the device, the dye was observed only on surgical gloves, apron (fists), inside the pipe system and internal walls of the acrylic chamber. There was a certain limitation of movement and visualization by the dentist whilst using the device. CONCLUSIONS The present device is a low-cost complementary resource for use in conjunction with standard PPE, to reduce the transmission of SARS-CoV-2 in the dental setting. Further clinical trials should be carried out to test the efficacy of this device to reduce aerosol dispersion and the consequent vector of contamination, as well as the ergonomic impacts related to its use.
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Affiliation(s)
- R Teichert-Filho
- Programa de Pós-Graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.,Centro Médico-Odontológico da Brigada Militar do Rio Grande do Sul, Porto Alegre, Brazil
| | - C N Baldasso
- Programa de Pós-Graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | - M M Campos
- Programa de Pós-Graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | - M S Gomes
- Programa de Pós-Graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.,Centro Médico-Odontológico da Brigada Militar do Rio Grande do Sul, Porto Alegre, Brazil
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10
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da Costa R, Passos GF, Quintão NLM, Fernandes ES, Maia JRLCB, Campos MM, Calixto JB. Taxane-induced neurotoxicity: Pathophysiology and therapeutic perspectives. Br J Pharmacol 2020; 177:3127-3146. [PMID: 32352155 DOI: 10.1111/bph.15086] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 04/17/2020] [Accepted: 04/25/2020] [Indexed: 12/28/2022] Open
Abstract
Taxane-derived drugs are antineoplastic agents used for the treatment of highly common malignancies. Paclitaxel and docetaxel are the most commonly used taxanes; however, other drugs and formulations have been used, such as cabazitaxel and nab-paclitaxel. Taxane treatment is associated with neurotoxicity, a well-known and relevant side effect, very prevalent amongst patients undergoing chemotherapy. Painful peripheral neuropathy is the most dose-limiting side effect of taxanes, affecting up to 97% of paclitaxel-treated patients. Central neurotoxicity is an emerging side effect of taxanes and it is characterized by cognitive impairment and encephalopathy. Besides impairing compliance to chemotherapy treatment, taxane-induced neurotoxicity (TIN) can adversely affect the patient's life quality on a long-term basis. Despite the clinical relevance, not many reviews have comprehensively addressed taxane-induced neurotoxicity when they are used therapeutically. This article provides an up-to-date review on the pathophysiology of TIN and the novel potential therapies to prevent or treat this side effect.
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Affiliation(s)
- Robson da Costa
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Giselle F Passos
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Nara L M Quintão
- Programa de Pós-graduação em Ciências Farmacêuticas, Universidade do Vale do Itajaí, Itajaí, SC, Brazil
| | - Elizabeth S Fernandes
- Instituto Pelé Pequeno Príncipe, Curitiba, PR, Brazil.,Programa de Pós-graduação em Biotecnologia Aplicada à Saúde da Criança e do Adolescente, Faculdades Pequeno Príncipe, Curitiba, PR, Brazil
| | | | - Maria Martha Campos
- Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - João B Calixto
- Centro de Inovação e Ensaios Pré-clínicos - CIEnP, Florianópolis, SC, Brazil
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11
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Ornelas LTC, Silva DC, Tomich TR, Campos MM, Machado FS, Ferreira AL, Maurício RM, Pereira LGR. Differences in methane production, yield and intensity and its effects on metabolism of dairy heifers. Sci Total Environ 2019; 689:1133-1140. [PMID: 31466153 DOI: 10.1016/j.scitotenv.2019.06.489] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 04/24/2019] [Revised: 06/24/2019] [Accepted: 06/28/2019] [Indexed: 06/10/2023]
Abstract
The effects of divergent phenotypic classification in crossbreed Holstein × Gyr dairy heifers for methane emissions in relation to performance, digestibility, energy and nitrogen partition, blood metabolites and temperature of body surface were evaluated. Thirty-five heifers were classified as high and low emission for CH4 production (g/day), yield (g/kg dry matter intake) and intensity (g/kg average daily gain). Digestibility was evaluated by total collection of feces and urine. Gas exchanges were obtained in open-circuit respiratory chambers. A completely randomized design was used and divergent groups were compared by Fisher's test. No differences were found in intake traits between groups of CH4 production and intensity. The low yield group had higher intake. For digestibility and temperature at different body sites were no differences between variables. High production group had higher energy losses as methane and heat production. Low intensity group had higher digestible energy, energy balance and ratio between metabolizable and digestible energy. Urinary nitrogen was 14.3% lower for low production group. There was a difference between methane yield divergent groups for nitrogen intake, digestible and retained. Energy and nitrogen partitioning traits are correlated to the animals divergent for methane production and yield. The low production group presented lower blood insulin concentration. It was not possible to identify divergent animals for CH4 emission using the infrared thermography technique.
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Affiliation(s)
- L T C Ornelas
- Department of Animal Science, State University of Southwestern Bahia (UESB), Bahia 45700-000, Brazil
| | - D C Silva
- Department of Animal Science, State University of Southwestern Bahia (UESB), Bahia 45700-000, Brazil
| | - T R Tomich
- Embrapa Dairy Cattle, Minas Gerais 36038-330, Brazil
| | - M M Campos
- Embrapa Dairy Cattle, Minas Gerais 36038-330, Brazil
| | - F S Machado
- Embrapa Dairy Cattle, Minas Gerais 36038-330, Brazil
| | - A L Ferreira
- Department of Agricultural Science, Federal University of São João del-Rei (UFSJ), Minas Gerais 36307-352, Brazil
| | - R M Maurício
- Department of Agricultural Science, Federal University of São João del-Rei (UFSJ), Minas Gerais 36307-352, Brazil
| | - L G R Pereira
- Embrapa Dairy Cattle, Minas Gerais 36038-330, Brazil.
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12
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Dagnino APA, da Silva RBM, Chagastelles PC, Pereira TCB, Venturin GT, Greggio S, Costa da Costa J, Bogo MR, Campos MM. Nociceptin/orphanin FQ receptor modulates painful and fatigue symptoms in a mouse model of fibromyalgia. Pain 2019; 160:1383-1401. [PMID: 30720581 DOI: 10.1097/j.pain.0000000000001513] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 01/21/2023]
Abstract
Generalized pain and fatigue are both hallmarks of fibromyalgia, a syndrome with an indefinite etiology. The treatment options for fibromyalgia are currently limited, probably because of its intricate pathophysiology. Thus, further basic and clinical research on this condition is currently needed. This study investigated the effects of nociceptin/orphanin FQ (N/OFQ) receptor (NOPr) ligands and the modulation of the NOP system in the preclinical mouse model of reserpine-induced fibromyalgia. The effects of administration of the natural agonist N/OFQ and the selective NOPr antagonists (UFP-101 and SB-612111) were evaluated in fibromyalgia-related symptoms in reserpine-treated mice. The expression of prepronociceptin/orphanin FQ and NOPr was assessed in central and peripheral sites at different time points after reserpine administration. Nociceptin/orphanin FQ displayed dual effects in the behavioral changes in the reserpine-elicited fibromyalgia model. The peptide NOPr antagonist UFP-101 produced analgesic and antifatigue effects, by preventing alterations in brain activity and skeletal muscle metabolism, secondary to fibromyalgia induction. The nonpeptide NOPr antagonist SB-612111 mirrored the favorable effects of UFP-101 in painful and fatigue alterations induced by reserpine. A time-related up- or downregulation of prepronociceptin/orphanin FQ and NOPr was observed in supraspinal, spinal, and peripheral sites of reserpine-treated mice. Our data shed new lights on the mechanisms underlying the fibromyalgia pathogenesis, supporting a role for N/OFQ-NOP receptor system in this syndrome.
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Affiliation(s)
- Ana Paula Aquistapase Dagnino
- Escola de Ciências, Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
- Escola de Ciências da Saúde, Centro de Pesquisa em Toxicologia e Farmacologia, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Rodrigo Braccini Madeira da Silva
- Escola de Medicina, Programa de Pós-Graduação em Medicina e Ciências da Saúde, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Pedro Cesar Chagastelles
- Escola de Medicina, Programa de Pós-Graduação em Medicina e Ciências da Saúde, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Talita Carneiro Brandão Pereira
- Escola de Ciências, Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
- Escola de Ciências, Laboratório de Biologia Genômica e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Gianina Teribele Venturin
- Centro de Pesquisa Pré-Clínica, Instituto do Cérebro do Rio Grande do Sul, Brain Institute (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Samuel Greggio
- Centro de Pesquisa Pré-Clínica, Instituto do Cérebro do Rio Grande do Sul, Brain Institute (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
- Escola de Ciências da Saúde, Curso de Graduação em Biomedicina, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Jaderson Costa da Costa
- Centro de Pesquisa Pré-Clínica, Instituto do Cérebro do Rio Grande do Sul, Brain Institute (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Maurício Reis Bogo
- Escola de Ciências, Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
- Escola de Medicina, Programa de Pós-Graduação em Medicina e Ciências da Saúde, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
- Escola de Ciências, Laboratório de Biologia Genômica e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Maria Martha Campos
- Escola de Ciências, Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
- Escola de Ciências da Saúde, Centro de Pesquisa em Toxicologia e Farmacologia, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
- Escola de Medicina, Programa de Pós-Graduação em Medicina e Ciências da Saúde, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
- Escola de Ciências da Saúde, Programa de Pós-Graduação em Odontologia, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
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Ferreira CL, Valente CA, Zanini ML, Sgarioni B, Ferreira Tondo PH, Chagastelles PC, Braga J, Campos MM, Malmonge JA, de Souza Basso NR. Biocompatible PCL/PLGA/Polypyrrole Composites for Regenerating Nerves. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/masy.201800028] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Cristina Lorenski Ferreira
- Programa de Pós-graduação em Engenharia e Tecnologia de Materiais; Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre RS Brazil
| | - Cristhiane Alvim Valente
- Programa de Pós-graduação em Engenharia e Tecnologia de Materiais; Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre RS Brazil
| | - Mara Lise Zanini
- Escola de Ciências; Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre RS Brazil
| | - Bruna Sgarioni
- Escola Politécnica; Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre RS Brazil
| | | | - Pedro Cesar Chagastelles
- Instituto de Toxicologia e Farmacologia; Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre RS Brazil
| | - Jefferson Braga
- Programa de Pós-graduação em Medicina e Ciências da Saúde; Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre RS Brazil
| | - Maria Martha Campos
- Instituto de Toxicologia e Farmacologia; Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre RS Brazil
| | - José Antonio Malmonge
- Universidade Estadual Paulista (UNESP); Faculdade de Engenharia; Campus de Ilha Solteira; SP Brazil
| | - Nara Regina de Souza Basso
- Programa de Pós-graduação em Engenharia e Tecnologia de Materiais; Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre RS Brazil
- Escola de Ciências; Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre RS Brazil
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de Moura Sperotto ND, Deves Roth C, Rodrigues-Junior VS, Ev Neves C, Reisdorfer Paula F, da Silva Dadda A, Bergo P, Freitas de Freitas T, Souza Macchi F, Moura S, Duarte de Souza AP, Campos MM, Valim Bizarro C, Santos DS, Basso LA, Machado P. Design of Novel Inhibitors of Human Thymidine Phosphorylase: Synthesis, Enzyme Inhibition, in Vitro Toxicity, and Impact on Human Glioblastoma Cancer. J Med Chem 2019; 62:1231-1245. [DOI: 10.1021/acs.jmedchem.8b01305] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | - Fávero Reisdorfer Paula
- Laboratório de Desenvolvimento e Controle de Qualidade em Medicamentos, Universidade Federal do Pampa, 97508-000 Uruguaiana, RS, Brazil
| | | | | | | | | | - Sidnei Moura
- Laboratório de Produtos Naturais e Sintéticos, Instituto de Biotecnologia, Universidade de Caxias do Sul, 95070-560 Caxias do Sul, RS, Brazil
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15
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Togni L, de Abreu MC, Augustin AH, da Silva RBM, Campos MM. Characterization of a rat model with temporomandibular joint osteoarthritis following a surgical anterior disc displacement. Am J Transl Res 2018; 10:3806-3817. [PMID: 30662631 PMCID: PMC6291709] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 10/31/2018] [Indexed: 06/09/2023]
Abstract
This study has characterized a rat model with temporomandibular osteoarthritis (TMJ-OA) following a surgical anterior displacement of their articular disc (ADD). The well-established model of OA, induced by an intra-articular injection of complete Freund's adjuvant (CFA) into the TMJ, was used for comparison purposes. Male Wistar rats were assigned into two surgical groups, namely, ADD (anterior disc displacement) and sham-operated (surgical access, without ADD). Additional groups received an intra-articular infiltration of CFA (50 μl/site; 1:1 oil/saline emulsion), or the vehicle (0.9% NaCl). The separate experimental subgroups were euthanized at 15, 30 or 60 days and their left TMJs were collected for histological, immunohistochemistry and micro-CT analyses. The serum levels of IL-1β, IL-6 and TNF were analyzed. The fibrocartilage thicknesses were increased in the ADD groups at all of the analyzed time-points. In the CFA group, fibrocartilage thickenings were seen only in the posterior thirds at 15 days. The ADD group displayed an increase of the proteoglycan contents and ADAMTS5 immunopositivity in the fibrocartilage at 30 and 60 days, without any variations of the collagen contents or the osteoclast activation. Upon the micro-CT evaluation, the ADD group presented increments of their trabecular separations and bone surfaces, with reduced trabecular thicknesses and bone volumes, plus osteophyte formations and condyle flattenings, from 30 to 60 days. The IL-1β, TNF or IL-6 serum levels were undetectable. The surgical ADD in the rats led to long-term OA-like alterations, with typical structural and morphological derangements of the TMJ, representing a reliable experimental model to investigate the TMJ-OA-related mechanisms.
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Affiliation(s)
- Lênio Togni
- PUCRS, Programa de Pós-graduação em Odontologia, Escola de Ciências da SaúdePorto Alegre/RS, Brasil
| | - Maira Cavallet de Abreu
- PUCRS, Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da SaúdePorto Alegre/RS, Brasil
| | | | | | - Maria Martha Campos
- PUCRS, Programa de Pós-graduação em Odontologia, Escola de Ciências da SaúdePorto Alegre/RS, Brasil
- PUCRS, Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da SaúdePorto Alegre/RS, Brasil
- PUCRS, Programa de Pós-graduação em Medicina e Ciências da Saúde, Escola de MedicinaPorto Alegre/RS, Brasil
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16
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Kolling GJ, Stivanin SCB, Gabbi AM, Machado FS, Ferreira AL, Campos MM, Tomich TR, Cunha CS, Dill SW, Pereira LGR, Fischer V. Performance and methane emissions in dairy cows fed oregano and green tea extracts as feed additives. J Dairy Sci 2018; 101:4221-4234. [PMID: 29477520 DOI: 10.3168/jds.2017-13841] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 01/16/2018] [Indexed: 11/19/2022]
Abstract
Plant extracts have been proposed as substitutes for chemical feed additives due to their potential as rumen fermentation modifiers and because of their antimicrobial and antioxidant activities, possibly reducing methane emissions. This study aimed to evaluate the use of oregano (OR), green tea extracts (GT), and their association as feed additives on the performance and methane emissions from dairy between 28 and 87 d of lactation. Thirty-two lactating dairy cows, blocked into 2 genetic groups: 16 Holstein cows and 16 crossbred Holstein-Gir, with 522.6 ± 58.3 kg of body weight, 57.2 ± 20.9 d in lactation, producing 27.5 ± 5.0 kg/cow of milk and with 3.1 ± 1.8 lactations were evaluated (means ± standard error of the means). Cows were allocated into 4 treatments: control (CON), without plant extracts in the diet; oregano extract (OR), with the addition of 0.056% of oregano extract in the dry matter (DM) of the diet; green tea (GT), with the addition of 0.028% of green tea extract in the DM of the diet; and mixture, with the addition of 0.056% oregano extract and 0.028% green tea extract in the DM of the diet. The forage-to-concentrate ratio was 60:40. Forage was composed of corn silage (94%) and Tifton hay (6%); concentrate was based on ground corn and soybean meal. Plant extracts were supplied as powder, which was previously added and homogenized into 1 kg of concentrate in natural matter, top-dressed onto the total mixed diet. No treatment by day interaction was observed for any of the evaluated variables, but some block by treatment interactions were significant. In Holstein cows, the mixture treatment decreased gross energy and tended to decrease the total-tract apparent digestibility coefficient for crude protein and total digestible nutrients when compared with OR. During the gas measurement period, GT and OR increased the digestible fraction of the ingested DM and decreased CH4 expressed in grams per kilogram of digestible DMI compared with CON. The use of extracts did not change rumen pH, total volatile fatty acid concentration, milk yield, or most milk traits. Compared with CON, oregano addition decreased fat concentration in milk. The use of plant extracts altered some milk fatty acids but did not change milk fatty acids grouped according to chain length (short or long), saturation (unsaturated or saturated), total conjugated linoleic acids, and n-3 and n-6 contents. Green tea and oregano fed separately reduced gas emission in cows during the first third of lactation and have potential to be used as feed additives for dairy cows.
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Affiliation(s)
- G J Kolling
- Department of Veterinary Medicine, Escola de Medicina Veterinária University Center FACVEST and IMED, Passo Fundo, 99070-220, Rio Grande do Sul, Brazil
| | - S C B Stivanin
- Department of Animal Science, Universidade Federal do Rio Grande do Sul, Porto Alegre, 91540-000, Rio Grande do Sul, Brazil
| | - A M Gabbi
- Department of Animal Science, Universidade Federal do Rio Grande do Sul, Porto Alegre, 91540-000, Rio Grande do Sul, Brazil
| | - F S Machado
- Brazilian Agricultural Research Corporation, Embrapa Dairy Cattle, Juiz de Fora, 36038-330, Minas Gerais, Brazil
| | - A L Ferreira
- Brazilian Agricultural Research Corporation, Embrapa Dairy Cattle, Juiz de Fora, 36038-330, Minas Gerais, Brazil; Universidade Federal de São João del Rei, São João del Rei, 36307-352, Minas Gerais, Brazil
| | - M M Campos
- Brazilian Agricultural Research Corporation, Embrapa Dairy Cattle, Juiz de Fora, 36038-330, Minas Gerais, Brazil
| | - T R Tomich
- Brazilian Agricultural Research Corporation, Embrapa Dairy Cattle, Juiz de Fora, 36038-330, Minas Gerais, Brazil
| | - C S Cunha
- Doctor in Animal Science from Universidade Federal de Viçosa, Viçosa, 36570-000, Minas Gerais, Brazil
| | - S W Dill
- Integrated Residency Program in Veterinary Medicine, Universidade Federal do Pampa, Uruguaiana, 97504210, Rio Grande do Sul, Brazil
| | - L G R Pereira
- Brazilian Agricultural Research Corporation, Embrapa Dairy Cattle, Juiz de Fora, 36038-330, Minas Gerais, Brazil
| | - V Fischer
- Department of Animal Science, Universidade Federal do Rio Grande do Sul, Porto Alegre, 91540-000, Rio Grande do Sul, Brazil.
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Alvim Valente C, Cesar Chagastelles P, Fontana Nicoletti N, Ramos Garcez G, Sgarioni B, Herrmann F, Pesenatto G, Goldani E, Zanini ML, Campos MM, Meurer Papaléo R, Braga da Silva J, de Souza Basso NR. Design and optimization of biocompatible polycaprolactone/poly (l-lactic-co-glycolic acid) scaffolds with and without microgrooves for tissue engineering applications. J Biomed Mater Res A 2018; 106:1522-1534. [PMID: 29388321 DOI: 10.1002/jbm.a.36355] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 01/04/2018] [Accepted: 01/24/2018] [Indexed: 01/18/2023]
Abstract
This study investigated the effects of smooth and microgrooved membrane blends, with different polycaprolactone (PCL)/ poly(lactic-co-glycolic acid) (PLGA) ratios on the viability, proliferation, and adhesion of different mammalian cell types. The polymer matrices with and without microgrooves, obtained by solvent casting, were characterized by field-emission scanning electron microscopy, atomic force microscopy, contact angle and Young's modulus. Blend characterization showed an increase in roughness and stiffness of membranes with 30% PLGA, without any effect on the contact angle value. Pure PCL significantly decreased the viability of Vero, HaCaT, RAW 264.7, and human fetal lung and gingival fibroblast cells, whereas addition of increasing concentrations of PLGA led to a reduced cytotoxicity. Increased proliferation rates were observed for all cell lines. Fibroblasts adhered efficiently to smooth membranes of the PCL70/PLGA30 blend and pure PLGA, compared to pure PCL and silicone. Microgrooved membranes promoted similar cell adhesion for all groups. Microstructured membranes (15 and 20-μm wide grooves) promoted suitable orientation of fibroblasts in both PCL70/PLGA30 and pure PLGA, as compared to pure PCL. Neuronal cells of the dorsal root ganglion exhibited an oriented adhesion to all the tested microgrooved membranes. Data suggest a satisfactory safety profile for the microgrooved PCL70/PLGA30 blend, pointing out this polymer combination as a promising biomaterial for peripheral nerve regeneration when cell orientation is required. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 1522-1534, 2018.
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Affiliation(s)
- Cristhiane Alvim Valente
- Graduate Program in Materials Engineering and Technology, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Pedro Cesar Chagastelles
- Graduate Program in Medicine and Health Sciences, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.,Institute of Toxicology and Pharmacology, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Natália Fontana Nicoletti
- Graduate Program in Medicine and Health Sciences, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.,Institute of Toxicology and Pharmacology, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Giovanna Ramos Garcez
- Graduate Program in Materials Engineering and Technology, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Bruna Sgarioni
- Faculty of Chemistry, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Fábio Herrmann
- Faculty of Medicine, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Gustavo Pesenatto
- Faculty of Medicine, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Eduardo Goldani
- Graduate Program in Medicine and Health Sciences, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.,Institute of Toxicology and Pharmacology, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Mara Lise Zanini
- Faculty of Chemistry, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Maria Martha Campos
- Institute of Toxicology and Pharmacology, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Ricardo Meurer Papaléo
- Graduate Program in Materials Engineering and Technology, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.,Faculty of Physics, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.,Interdisciplinary Center of Nanoscience and Micro-nanotechnology, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Jefferson Braga da Silva
- Graduate Program in Medicine and Health Sciences, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.,Faculty of Medicine, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Nara Regina de Souza Basso
- Graduate Program in Materials Engineering and Technology, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.,Faculty of Chemistry, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.,Interdisciplinary Center of Nanoscience and Micro-nanotechnology, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
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Amaral MEA, Nery LR, Leite CE, de Azevedo Junior WF, Campos MM. Pre-clinical effects of metformin and aspirin on the cell lines of different breast cancer subtypes. Invest New Drugs 2018; 36:782-796. [PMID: 29392539 DOI: 10.1007/s10637-018-0568-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 01/22/2018] [Indexed: 02/06/2023]
Abstract
Background Breast cancer is highly prevalent among women worldwide. It is classified into three main subtypes: estrogen receptor positive (ER+), human epidermal growth factor receptor 2 positive (HER2+), and triple negative breast cancer (TNBC). This study has evaluated the effects of aspirin and metformin, isolated or in a combination, in breast cancer cells of the different subtypes. Methods The breast cancer cell lines MCF-7, MDA-MB-231, and SK-BR-3 were treated with aspirin and/or metformin (0.01 mM - 10 mM); functional in vitro assays were performed. The interactions with the estrogen receptors (ER) were evaluated in silico. Results Metformin (2.5, 5 and 10 mM) altered the morphology and reduced the viability and migration of the ER+ cell line MCF-7, whereas aspirin triggered this effect only at 10 mM. A synergistic effect for the combination of metformin and aspirin (2.5, 5 or 10 mM each) was observed in the TNBC cell subtype MDA-MB-231, according to the evaluation of its viability and colony formation. Partial inhibitory effects were observed for either of the drugs in the HER2+ cell subtype SK-BR-3. The effects of metformin and aspirin partly relied on cyclooxygenase-2 (COX-2) upregulation, without the production of lipoxins. In silico, metformin and aspirin bound to the ERα receptor with the same energy. Conclusion We have provided novel evidence on the mechanisms of action of aspirin and metformin in breast cancer cells, showing favorable outcomes for these drugs in the ER+ and TNBC subtypes.
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Affiliation(s)
- Maria Eduarda Azambuja Amaral
- Programa de Pós-Graduação em Biologia Celular e Molecular, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga, 6681, Porto Alegre, RS, 90619-900, Brazil.,Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da Saúde, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga, 6681, Porto Alegre, RS, 90619-900, Brazil
| | - Laura Roesler Nery
- ZebLab & Laboratório de Biologia e Desenvolvimento do Sistema Nervoso, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga 6681, Prédio 12 D, sala 301, Porto Alegre, RS, 90619-900, Brazil
| | - Carlos Eduardo Leite
- Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da Saúde, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga, 6681, Porto Alegre, RS, 90619-900, Brazil
| | - Walter Filgueira de Azevedo Junior
- Programa de Pós-Graduação em Biologia Celular e Molecular, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga, 6681, Porto Alegre, RS, 90619-900, Brazil.,Laboratório de Biologia de Sistemas Computacionais, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga, 6681, Porto Alegre, RS, 90619-900, Brazil
| | - Maria Martha Campos
- Programa de Pós-Graduação em Biologia Celular e Molecular, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga, 6681, Porto Alegre, RS, 90619-900, Brazil. .,Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da Saúde, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga, 6681, Porto Alegre, RS, 90619-900, Brazil. .,Programa de Pós-Graduação em Odontologia, Escola de Ciências da Saúde, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga, 6681, Porto Alegre, RS, 90619-900, Brazil.
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Villela AD, Pham H, Jones V, Grzegorzewicz AE, Rodrigues-Junior VDS, Campos MM, Basso LA, Jackson M, Santos DS. Analysis of uracil phosphoribosyltransferase expression in Mycobacterium tuberculosis and evaluation of upp knockout strain in infected mice. FEMS Microbiol Lett 2017; 364:fnx023. [PMID: 28130366 DOI: 10.1093/femsle/fnx023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 01/24/2017] [Indexed: 11/14/2022] Open
Abstract
The upp (Rv3309c)-encoded uracil phosphoribosyltransferase from Mycobacterium tuberculosis (MtUPRT) converts uracil and 5-phosphoribosyl-α-1-pyrophosphate into pyrophosphate and uridine 5΄-monophosphate, the precursor of all pyrimidine nucleotides. A M. tuberculosis knockout strain for upp gene was generated by allelic replacement. Knockout and complemented strains were validated by a functional assay of uracil incorporation. A basal level of MtUPRT expression is shown to be independent of either growth medium used, addition of bases, or oxygen presence/absence. The upp disruption does not affect M. tuberculosis growth in Middlebrook 7H9 medium, and it is not required for M. tuberculosis virulence in a mouse model of infection. Thus, MtUPRT is unlikely to be a good target for drugs against M. tuberculosis.
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Affiliation(s)
- Anne Drumond Villela
- National Institute of Science and Technology in Tuberculosis, Research Center in Molecular and Functional Biology, Pontifical Catholic University of Rio Grande do Sul-PUCRS, CEP 90619-900, Porto Alegre, RS, Brazil
| | - Ha Pham
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523 USA
| | - Victoria Jones
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523 USA
| | - Anna E Grzegorzewicz
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523 USA
| | - Valnês da Silva Rodrigues-Junior
- National Institute of Science and Technology in Tuberculosis, Research Center in Molecular and Functional Biology, Pontifical Catholic University of Rio Grande do Sul-PUCRS, CEP 90619-900, Porto Alegre, RS, Brazil.,Graduate Program in Medicine and Health Sciences, PUCRS, CEP 90610-000, Porto Alegre, Brazil
| | - Maria Martha Campos
- National Institute of Science and Technology in Tuberculosis, Research Center in Molecular and Functional Biology, Pontifical Catholic University of Rio Grande do Sul-PUCRS, CEP 90619-900, Porto Alegre, RS, Brazil.,Graduate Program in Medicine and Health Sciences, PUCRS, CEP 90610-000, Porto Alegre, Brazil
| | - Luiz Augusto Basso
- National Institute of Science and Technology in Tuberculosis, Research Center in Molecular and Functional Biology, Pontifical Catholic University of Rio Grande do Sul-PUCRS, CEP 90619-900, Porto Alegre, RS, Brazil.,Graduate Program in Medicine and Health Sciences, PUCRS, CEP 90610-000, Porto Alegre, Brazil.,Graduate Program in Celular and Molecular Biology, PUCRS, CEP 90619-900, Porto Alegre, Brazil
| | - Mary Jackson
- Graduate Program in Celular and Molecular Biology, PUCRS, CEP 90619-900, Porto Alegre, Brazil
| | - Diógenes Santiago Santos
- National Institute of Science and Technology in Tuberculosis, Research Center in Molecular and Functional Biology, Pontifical Catholic University of Rio Grande do Sul-PUCRS, CEP 90619-900, Porto Alegre, RS, Brazil.,Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523 USA
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Rodrigues-Junior VS, Cintra L, Machado P, Dadda A, Basso LA, Mafra ACCN, Campos AH, Campos MM, Santos DS. Toxicological profile of IQG-607 after single and repeated oral administration in minipigs: An essential step towards phase I clinical trial. Regul Toxicol Pharmacol 2017; 90:78-86. [PMID: 28838610 DOI: 10.1016/j.yrtph.2017.08.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 05/05/2017] [Revised: 08/18/2017] [Accepted: 08/20/2017] [Indexed: 12/28/2022]
Abstract
IQG-607 is an anti-tuberculosis drug candidate, with a promising safety and efficacy profile in models of tuberculosis infection both in vitro and in vivo. Here, we evaluated the safety and the possible toxic effects of IQG-607 after acute and 90-day repeated administrations in minipigs. Single oral administration of IQG-607 (220 mg/kg) to female and male minipigs did not result in any morbidity or mortality. No gross lesions were observed in the minipigs at necropsy. Repeated administration of IQG 607 (65, 30, or 15 mg/kg), given orally, for 90 days, in both male and female animals did not cause any mortality and no significant body mass alteration. Diarrhea and alopecia were the clinical signs observed in animals dosed with IQG-607 for 90 days. Long-term treatment with IQG-607 did not induce evident alterations of blood cell counts or any hematological parameters. Importantly, the repeated schedule of administration of IQG-607 resulted in increased cholesterol levels, increased glucose levels, decrease in the globulin levels, and increased creatinine levels over the time. Most necropsy and histopathological alterations of the organs from IQG-607-treated groups were also observed for the untreated group. In addition, pharmacokinetic parameters were evaluated. IQG-607 represents a potential candidate molecule for anti-tuberculosis drug development programs. Its promising in vivo activity and mild to moderate toxic events detected in this study suggest that IQG-607 represents a candidate for clinical development.
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Affiliation(s)
- Valnês S Rodrigues-Junior
- Centro de Pesquisas Em Biologia Molecular e Funcional (CPBMF) and Instituto Nacional de Ciência e Tecnologia Em Tuberculose (INCT-TB), Pontifícia Universidade Católica Do Rio Grande Do Sul (PUCRS), Av. Ipiranga 6681 - Prédio 92A Tecnopuc, 90619-900 Porto Alegre, Brazil.
| | - Luciana Cintra
- Centro de Experimentação e Treinamento Em Cirurgia (CETEC), Sociedade Beneficente Israelita Brasileira Albert Einstein, São Paulo, Brazil
| | - Pablo Machado
- Centro de Pesquisas Em Biologia Molecular e Funcional (CPBMF) and Instituto Nacional de Ciência e Tecnologia Em Tuberculose (INCT-TB), Pontifícia Universidade Católica Do Rio Grande Do Sul (PUCRS), Av. Ipiranga 6681 - Prédio 92A Tecnopuc, 90619-900 Porto Alegre, Brazil; Programa de Pós-Graduação Em Biologia Celular e Molecular, PUCRS, Porto Alegre, Brazil
| | - Adílio Dadda
- Centro de Pesquisas Em Biologia Molecular e Funcional (CPBMF) and Instituto Nacional de Ciência e Tecnologia Em Tuberculose (INCT-TB), Pontifícia Universidade Católica Do Rio Grande Do Sul (PUCRS), Av. Ipiranga 6681 - Prédio 92A Tecnopuc, 90619-900 Porto Alegre, Brazil; Programa de Pós-Graduação Em Biologia Celular e Molecular, PUCRS, Porto Alegre, Brazil
| | - Luiz Augusto Basso
- Centro de Pesquisas Em Biologia Molecular e Funcional (CPBMF) and Instituto Nacional de Ciência e Tecnologia Em Tuberculose (INCT-TB), Pontifícia Universidade Católica Do Rio Grande Do Sul (PUCRS), Av. Ipiranga 6681 - Prédio 92A Tecnopuc, 90619-900 Porto Alegre, Brazil; Programa de Pós-Graduação Em Biologia Celular e Molecular, PUCRS, Porto Alegre, Brazil; Programa de Pós-Graduação Em Medicina e Ciências da Saúde, PUCRS, Porto Alegre, Brazil
| | | | - Alexandre Holthausen Campos
- Centro de Experimentação e Treinamento Em Cirurgia (CETEC), Sociedade Beneficente Israelita Brasileira Albert Einstein, São Paulo, Brazil
| | - Maria Martha Campos
- Programa de Pós-Graduação Em Medicina e Ciências da Saúde, PUCRS, Porto Alegre, Brazil; Instituto de Toxicologia e Farmacologia, PUCRS, Porto Alegre, Brazil
| | - Diógenes Santiago Santos
- Centro de Pesquisas Em Biologia Molecular e Funcional (CPBMF) and Instituto Nacional de Ciência e Tecnologia Em Tuberculose (INCT-TB), Pontifícia Universidade Católica Do Rio Grande Do Sul (PUCRS), Av. Ipiranga 6681 - Prédio 92A Tecnopuc, 90619-900 Porto Alegre, Brazil; Programa de Pós-Graduação Em Biologia Celular e Molecular, PUCRS, Porto Alegre, Brazil
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Villela AD, Rodrigues VDS, Pinto AFM, Wink PL, Sánchez-Quitian ZA, Petersen GO, Campos MM, Basso LA, Santos DS. Characterisation of iunH gene knockout strain from Mycobacterium tuberculosis. Mem Inst Oswaldo Cruz 2017; 112:203-208. [PMID: 28225907 PMCID: PMC5319374 DOI: 10.1590/0074-02760160462] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 12/02/2016] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Tuberculosis (TB) is an infectious disease caused mainly by the bacillus Mycobacterium tuberculosis. The better understanding of important metabolic pathways from M. tuberculosis can contribute to the development of novel therapeutic and prophylactic strategies to combat TB. Nucleoside hydrolase (MtIAGU-NH), encoded by iunH gene (Rv3393), is an enzyme from purine salvage pathway in M. tuberculosis. MtIAGU-NH accepts inosine, adenosine, guanosine, and uridine as substrates, which may point to a pivotal metabolic role. OBJECTIVES Our aim was to construct a M. tuberculosis knockout strain for iunH gene, to evaluate in vitro growth and the effect of iunH deletion in M. tuberculosis in non-activated and activated macrophages models of infection. METHODS A M. tuberculosis knockout strain for iunH gene was obtained by allelic replacement, using pPR27xylE plasmid. The complemented strain was constructed by the transformation of the knockout strain with pNIP40::iunH. MtIAGU-NH expression was analysed by Western blot and LC-MS/MS. In vitro growth was evaluated in Sauton’s medium. Bacterial load of non-activated and interferon-γ activated RAW 264.7 cells infected with knockout strain was compared with wild-type and complemented strains. FINDINGS Western blot and LC-MS/MS validated iunH deletion at protein level. The iunH knockout led to a delay in M. tuberculosis growth kinetics in Sauton’s medium during log phase, but did not affect bases and nucleosides pool in vitro. No significant difference in bacterial load of knockout strain was observed when compared with both wild-type and complemented strains after infection of non-activated and interferon-γ activated RAW 264.7 cells. MAIN CONCLUSION The disruption of iunH gene does not influence M. tuberculosis growth in both non-activated and activated RAW 264.7 cells, which show that iunH gene is not important for macrophage invasion and virulence. Our results indicated that MtIAGU-NH is not a target for drug development.
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Affiliation(s)
- Anne Drumond Villela
- Pontifícia Universidade Católica do Rio Grande do Sul, Centro de Pesquisas em Biologia Molecular e Funcional, Instituto Nacional de Ciência e Tecnologia em Tuberculose, Porto Alegre, RS, Brasil
| | - Valnês da Silva Rodrigues
- Pontifícia Universidade Católica do Rio Grande do Sul, Centro de Pesquisas em Biologia Molecular e Funcional, Instituto Nacional de Ciência e Tecnologia em Tuberculose, Porto Alegre, RS, Brasil.,Pontifícia Universidade Católica do Rio Grande do Sul, Programa de Pós-Graduação em Medicina e Ciências da Saúde, Porto Alegre, RS, Brasil.,Pontifícia Universidade Católica do Rio Grande do Sul, Instituto de Toxicologia e Farmacologia, Porto Alegre, RS, Brasil
| | - Antônio Frederico Michel Pinto
- Pontifícia Universidade Católica do Rio Grande do Sul, Centro de Pesquisas em Biologia Molecular e Funcional, Instituto Nacional de Ciência e Tecnologia em Tuberculose, Porto Alegre, RS, Brasil
| | - Priscila Lamb Wink
- Pontifícia Universidade Católica do Rio Grande do Sul, Centro de Pesquisas em Biologia Molecular e Funcional, Instituto Nacional de Ciência e Tecnologia em Tuberculose, Porto Alegre, RS, Brasil.,Pontifícia Universidade Católica do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brasil
| | - Zilpa Adriana Sánchez-Quitian
- Pontifícia Universidade Católica do Rio Grande do Sul, Centro de Pesquisas em Biologia Molecular e Funcional, Instituto Nacional de Ciência e Tecnologia em Tuberculose, Porto Alegre, RS, Brasil.,Pontifícia Universidade Católica do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brasil
| | - Guilherme Oliveira Petersen
- Pontifícia Universidade Católica do Rio Grande do Sul, Centro de Pesquisas em Biologia Molecular e Funcional, Instituto Nacional de Ciência e Tecnologia em Tuberculose, Porto Alegre, RS, Brasil
| | - Maria Martha Campos
- Pontifícia Universidade Católica do Rio Grande do Sul, Programa de Pós-Graduação em Medicina e Ciências da Saúde, Porto Alegre, RS, Brasil.,Pontifícia Universidade Católica do Rio Grande do Sul, Instituto de Toxicologia e Farmacologia, Porto Alegre, RS, Brasil.,Pontifícia Universidade Católica do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brasil
| | - Luiz Augusto Basso
- Pontifícia Universidade Católica do Rio Grande do Sul, Centro de Pesquisas em Biologia Molecular e Funcional, Instituto Nacional de Ciência e Tecnologia em Tuberculose, Porto Alegre, RS, Brasil.,Pontifícia Universidade Católica do Rio Grande do Sul, Programa de Pós-Graduação em Medicina e Ciências da Saúde, Porto Alegre, RS, Brasil.,Pontifícia Universidade Católica do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brasil
| | - Diógenes Santiago Santos
- Pontifícia Universidade Católica do Rio Grande do Sul, Centro de Pesquisas em Biologia Molecular e Funcional, Instituto Nacional de Ciência e Tecnologia em Tuberculose, Porto Alegre, RS, Brasil.,Pontifícia Universidade Católica do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brasil
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Cruz FF, Leite CE, Kist LW, de Oliveira GM, Bogo MR, Bonan CD, Campos MM, Morrone FB. Effects of caffeine on behavioral and inflammatory changes elicited by copper in zebrafish larvae: Role of adenosine receptors. Comp Biochem Physiol C Toxicol Pharmacol 2017; 194:28-36. [PMID: 28163255 DOI: 10.1016/j.cbpc.2017.01.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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: 12/02/2016] [Revised: 01/25/2017] [Accepted: 01/27/2017] [Indexed: 12/13/2022]
Abstract
This study investigated the effects of caffeine in the behavioral and inflammatory alterations caused by copper in zebrafish larvae, attempting to correlate these changes with the modulation of adenosine receptors. To perform a survival curve, 7dpf larvae were exposed to 10μM CuSO4, combined to different concentrations of caffeine (100μM, 500μM and 1mM) for up to 24h. The treatment with copper showed lower survival rates only when combined with 500μM and 1mM of caffeine. We selected 4 and 24h as treatment time-points. The behavior evaluation was done by analyzing the traveled distance, the number of entries in the center, and the length of permanence in the center and the periphery of the well. The exposure to 10μM CuSO4 plus 500μM caffeine at 4 and 24h changed the behavioral parameters. To study the inflammatory effects of caffeine, we assessed the PGE2 levels by using UHPLC-MS/MS, and TNF, COX-2, IL-6 and IL-10 gene expression by RT-qPCR. The expression of adenosine receptors was also evaluated with RT-qPCR. When combined to copper, caffeine altered inflammatory markers depending on the time of exposure. Adenosine receptors expression was significantly increased, especially after 4h exposure to copper and caffeine together or separately. Our results demonstrated that caffeine enhances the inflammation induced by copper by decreasing animal survival, altering inflammatory markers and promoting behavioral changes in zebrafish larvae. We also conclude that alterations in adenosine receptors are related to those effects.
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Affiliation(s)
- Fernanda Fernandes Cruz
- Programa de Pós-Graduação em Medicina e Ciências da Saúde, PUCRS, Avenida Ipiranga, 6690, 90619-900 Porto Alegre, RS, Brazil; Laboratório de Farmacologia Aplicada, PUCRS, Avenida Ipiranga, 6681, Partenon, 90619-900 Porto Alegre, RS, Brazil
| | - Carlos Eduardo Leite
- Instituto de Toxicologia e Farmacologia, PUCRS, Avenida Ipiranga, 6681, 90619-900 Porto Alegre, RS, Brazil
| | - Luiza Wilges Kist
- Programa de Pós-Graduação em Medicina e Ciências da Saúde, PUCRS, Avenida Ipiranga, 6690, 90619-900 Porto Alegre, RS, Brazil; Laboratório de Genômica e Biologia Molecular, PUCRS, Avenida Ipiranga, 6681, 90619-900 Porto Alegre, RS, Brazil
| | - Giovanna Medeiros de Oliveira
- Programa de Pós-Graduação em Medicina e Ciências da Saúde, PUCRS, Avenida Ipiranga, 6690, 90619-900 Porto Alegre, RS, Brazil; Laboratório de Genômica e Biologia Molecular, PUCRS, Avenida Ipiranga, 6681, 90619-900 Porto Alegre, RS, Brazil
| | - Maurício Reis Bogo
- Faculdade de Biociências, PUCRS, Avenida Ipiranga, 6681, 90619-900 Porto Alegre, RS, Brazil; Laboratório de Genômica e Biologia Molecular, PUCRS, Avenida Ipiranga, 6681, 90619-900 Porto Alegre, RS, Brazil
| | - Carla Denise Bonan
- Faculdade de Biociências, PUCRS, Avenida Ipiranga, 6681, 90619-900 Porto Alegre, RS, Brazil
| | - Maria Martha Campos
- Instituto de Toxicologia e Farmacologia, PUCRS, Avenida Ipiranga, 6681, 90619-900 Porto Alegre, RS, Brazil; Faculdade de Odontologia, PUCRS, Avenida Ipiranga, 6681, 90619-900 Porto Alegre, RS, Brazil
| | - Fernanda Bueno Morrone
- Programa de Pós-Graduação em Medicina e Ciências da Saúde, PUCRS, Avenida Ipiranga, 6690, 90619-900 Porto Alegre, RS, Brazil; Laboratório de Farmacologia Aplicada, PUCRS, Avenida Ipiranga, 6681, Partenon, 90619-900 Porto Alegre, RS, Brazil; Faculdade de Farmácia, PUCRS, Avenida Ipiranga, 6681, 90619-900 Porto Alegre, RS, Brazil.
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Nicoletti NF, Erig TC, Zanin RF, Roxo MR, Ferreira NP, Gomez MV, Morrone FB, Campos MM. Pre-clinical evaluation of voltage-gated calcium channel blockers derived from the spider P. nigriventer in glioma progression. Toxicon 2017; 129:58-67. [PMID: 28202361 DOI: 10.1016/j.toxicon.2017.02.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 02/01/2017] [Accepted: 02/02/2017] [Indexed: 01/30/2023]
Abstract
This study investigated the effects of P/Q- and N-type voltage-gated calcium channel (VGCC) blockers derived from P. nigriventer in glioma progression, by means of in vitro and in vivo experiments. Glioma cells M059J, U-138MG and U-251MG were used to evaluate the antiproliferative effects of P/Q- and N-type VGCC inhibitors PhTx3-3 and Phα1β from P. nigriventer (0.3-100 pM), in comparison to MVIIC and MVIIA from C. magus (0.3-100 pM), respectively. The toxins were also analyzed in a glioma model induced by implantation of GL261 mouse cells. PhTx3-3, Phα1β and MVIIA displayed significant inhibitory effects on the proliferation and viability of all tested glioma cell lines, and evoked cell death mainly with apoptosis characteristics, as indicated by Annexin V/propidium iodide (PI) positivity. The antiproliferative effects of toxins were confirmed by flow cytometry using Ki67 staining. None of the tested toxins altered the proliferation rates of the N9 non-tumor glial cell line. Noteworthy, the administration of the preferential N-type VGCC inhibitors, Phα1β (50 pmol/site; i.c.v.), its recombinant form CTK 01512-2 (50 pmol/site; i.c.v. and i.t.), or MVIIA (10 pmol/site; i.c.v.) caused significant reductions of tumor areas in vivo. N-type VGCC inhibition by Phα1β, CTK 01512-2, and MVIIA led to a marked increase of GFAP-activated astrocytes, and Iba-1-positive microglia, in the peritumoral region, which might explain, at least in part, the inhibitory effects of the toxins in tumor development. This study provides novel evidence on the potential effects of P. nigriventer-derived P/Q-, and mainly, N-type VGCC inhibitors, in glioma progression.
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Affiliation(s)
- Natália Fontana Nicoletti
- PUCRS, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brazil; PUCRS, Instituto de Toxicologia e Farmacologia, Porto Alegre, RS, Brazil
| | | | - Rafael Fernandes Zanin
- PUCRS, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brazil
| | - Marcelo Ricardo Roxo
- Serviço de Neurocirurgia, Hospital São José, Irmandade da Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, RS, Brazil; UCS, Faculdade de Medicina, Departamento de Neurocirurgia, Caxias do Sul, RS, Brazil
| | - Nelson Pires Ferreira
- Serviço de Neurocirurgia, Hospital São José, Irmandade da Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, RS, Brazil
| | - Marcus Vinicius Gomez
- UFMG, Faculdade de Medicina, Laboratório de Neurociências, Belo Horizonte, MG, Brazil
| | - Fernanda Bueno Morrone
- PUCRS, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brazil; PUCRS, Instituto de Toxicologia e Farmacologia, Porto Alegre, RS, Brazil; PUCRS, Faculdade de Farmácia, Porto Alegre, RS, Brazil
| | - Maria Martha Campos
- PUCRS, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brazil; PUCRS, Instituto de Toxicologia e Farmacologia, Porto Alegre, RS, Brazil; PUCRS, Faculdade de Odontologia, Laboratório de Patologia, Porto Alegre, RS, Brazil.
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24
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Oss DB, Machado FS, Tomich TR, Pereira LGR, Campos MM, Castro MMD, da Silva TE, Marcondes MI. Energy and protein requirements of crossbred (Holstein × Gyr) growing bulls. J Dairy Sci 2017; 100:2603-2613. [PMID: 28161164 DOI: 10.3168/jds.2016-11414] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 05/06/2016] [Accepted: 12/14/2016] [Indexed: 11/19/2022]
Abstract
The objective of this study was to estimate the energy and protein requirements of crossbred (Holstein × Gyr) growing bulls. Twenty-four 10-mo-old bulls [initial body weight (BW) = 184 ± 23.4 kg] were used in a comparative slaughter trial. Six bulls were slaughtered at the beginning of the experiment as the reference group, to estimate initial empty body weight (EBW) and energy and protein contents of the remaining animals. The remaining bulls were assigned to a completely randomized design with 3 levels of dry matter intake and 6 replicates. The levels of dry matter intake were 1.2% of BW, 1.8% of BW, and ad libitum to target orts equal to 5% of the total amount that was fed. The remaining bulls were slaughtered at the end of the experiment. The bulls were fed a diet consisting of 59.6% corn silage and 40.4% concentrate on a dry matter basis. The equation that determined the relationship between EBW and BW was EBW = (0.861 ± 0.0031) × BW. The relationship between empty body gain (EBG) and average daily gain (ADG) was demonstrated by the following equation: EBG = (0.934 ± 0.0111) × ADG. Net energy for maintenance (NEM) was 74.8 ± 2.89 kcal/kg of EBW0.75 per day, and metabolizable energy for maintenance (MEM) was 120.8 kcal/kg of EBW0.75 per day. The detected efficiency of use of metabolizable energy for maintenance (km) was 61.9%. The equation used to estimate net energy for gain (NEG) was as follows: NEG = (0.049 ± 0.0011) × EBW0.75 × EBG0.729 ± 0.0532. The efficiency of use of metabolizable energy for gain (kg) was 35.7%. The metabolizable protein for maintenance (MPM) was 3.05 g/kg of BW0.75. The equation used to estimate net protein requirements for gain (NPG) = (87.138 ± 65.1378 × EBG) + [(40.436 ± 21.3640) × NEG]. The efficiency of use of metabolizable protein for gain (k) was 35.7%. We concluded that the estimates of energy and protein requirements presented herein are more appropriate than the National Research Council dairy cattle model and the Brazilian BR-CORTE system to balance the diets of crossbred (Holstein × Gyr) growing bulls.
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Affiliation(s)
- D B Oss
- Federal University of Viçosa, Animal Science Department, Viçosa, MG, Brazil, 36570-900
| | - F S Machado
- Brazilian Agricultural Research Corporation, Embrapa Dairy Cattle, Juiz de Fora, MG, Brazil, 36038-330
| | - T R Tomich
- Brazilian Agricultural Research Corporation, Embrapa Dairy Cattle, Juiz de Fora, MG, Brazil, 36038-330
| | - L G R Pereira
- Brazilian Agricultural Research Corporation, Embrapa Dairy Cattle, Juiz de Fora, MG, Brazil, 36038-330
| | - M M Campos
- Brazilian Agricultural Research Corporation, Embrapa Dairy Cattle, Juiz de Fora, MG, Brazil, 36038-330
| | - M M D Castro
- Federal University of Viçosa, Animal Science Department, Viçosa, MG, Brazil, 36570-900
| | - T E da Silva
- Federal University of Viçosa, Animal Science Department, Viçosa, MG, Brazil, 36570-900
| | - M I Marcondes
- Federal University of Viçosa, Animal Science Department, Viçosa, MG, Brazil, 36570-900.
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Kritski A, Barreira D, Junqueira-Kipnis AP, Moraes MO, Campos MM, Degrave WM, Miranda SS, Krieger MA, Chimara E, Morel C, Dalcolmo MP, Maciel ELN, Evangelista MDSN, Villa TS, Sanchez M, Costa FD, Queiroz I, Oliveira MM, Souza Junior R, Silva JRLE, Ruffino-Netto A. Brazilian Response to Global End TB Strategy : The National Tuberculosis Research Agenda. Rev Soc Bras Med Trop 2017; 49:135-45. [PMID: 27163579 DOI: 10.1590/0037-8682-0330-2015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 11/24/2015] [Indexed: 11/21/2022] Open
Affiliation(s)
- Afranio Kritski
- Rede Brasileira de Pesquisa em Tuberculose, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Draurio Barreira
- Programa Nacional de Controle de Tuberculose, Secretaria de Vigilância em Saúde, Ministério da Saúde, Brasília, Distrito Federal, Brazil
| | | | - Milton Ozorio Moraes
- Laboratório de Hanseníase, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Maria Martha Campos
- Rede Brasileira de Pesquisa em Tuberculose, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Wim Mauritz Degrave
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - Erica Chimara
- Rede Brasileira de Pesquisa em Tuberculose, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Carlos Morel
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | | | - Teresa Scatena Villa
- Rede Brasileira de Pesquisa em Tuberculose, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mauro Sanchez
- Rede Brasileira de Pesquisa em Tuberculose, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fernanda Dockhorn Costa
- Programa Nacional de Controle de Tuberculose, Secretaria de Vigilância em Saúde, Ministério da Saúde, Brasília, Distrito Federal, Brazil
| | | | | | - Ruy Souza Junior
- Programa Nacional de Controle de Tuberculose, Secretaria de Vigilância em Saúde, Ministério da Saúde, Brasília, Distrito Federal, Brazil
| | - Jose Roberto Lapa e Silva
- Rede Brasileira de Pesquisa em Tuberculose, Rio de Janeiro, Rio de Janeiro, Brazil.,Programa Acadêmico de Tuberculose, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Antonio Ruffino-Netto
- Rede Brasileira de Pesquisa em Tuberculose, Rio de Janeiro, Rio de Janeiro, Brazil.,Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
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26
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Giacobbo BC, Pissinate K, Rodrigues-Junior V, Villela AD, Grams ES, Abbadi BL, Subtil FT, Sperotto N, Trindade RV, Back DF, Campos MM, Basso LA, Machado P, Santos DS. New insights into the SAR and drug combination synergy of 2-(quinolin-4-yloxy)acetamides against Mycobacterium tuberculosis. Eur J Med Chem 2016; 126:491-501. [PMID: 27914363 DOI: 10.1016/j.ejmech.2016.11.048] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 11/20/2016] [Accepted: 11/21/2016] [Indexed: 01/16/2023]
Abstract
2-(Quinolin-4-yloxy)acetamides have been described as potent and selective in vitro inhibitors of Mycobacterium tuberculosis (Mtb) growth. Herein, a new series of optimized compounds were found to demonstrate highly potent antitubercular activity, with minimum inhibitory concentration (MIC) values against drug-susceptible and drug-resistant Mycobacterium tuberculosis strains in the submicromolar range. Furthermore, the most active compounds had no apparent toxicity to mammalian cells, and they showed intracellular activities similar to those of isoniazid and rifampin in a macrophage model of Mtb infection. Use of the checkerboard method to investigate the association profiles of lead compounds with first- and second-line antituberculosis drugs showed that 2-(quinolin-4-yloxy)acetamides have a synergistic effect with rifampin. Ultimately, the good permeability, moderate rates of metabolism and low risk of drug-drug interactions displayed by some of the synthesized compounds indicate that 2-(quinolin-4-yloxy)acetamides may yield candidates to use in the development of novel alternative therapeutics for tuberculosis treatment.
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Affiliation(s)
- Bruno Couto Giacobbo
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil
| | - Kenia Pissinate
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil
| | - Valnês Rodrigues-Junior
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil
| | - Anne Drumond Villela
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil
| | - Estêvão Silveira Grams
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil
| | - Bruno Lopes Abbadi
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil
| | - Fernanda Teixeira Subtil
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil
| | - Nathalia Sperotto
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-Graduação em Medicina e Ciências da Saúde, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil
| | - Rogério Valim Trindade
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil
| | - Davi Fernando Back
- Departamento de Química, Laboratório de Materiais Inorgânicos, Universidade Federal de Santa Maria, 97105-900, Santa Maria, Rio Grande do Sul, Brazil
| | - Maria Martha Campos
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-Graduação em Medicina e Ciências da Saúde, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil
| | - Luiz Augusto Basso
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-Graduação em Medicina e Ciências da Saúde, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil
| | - Pablo Machado
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil.
| | - Diógenes Santiago Santos
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil.
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27
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Nicoletti NF, Sénécal J, da Silva VD, Roxo MR, Ferreira NP, de Morais RLT, Pesquero JB, Campos MM, Couture R, Morrone FB. Primary Role for Kinin B1 and B2 Receptors in Glioma Proliferation. Mol Neurobiol 2016; 54:7869-7882. [DOI: 10.1007/s12035-016-0265-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 10/26/2016] [Indexed: 11/30/2022]
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Oss DB, Marcondes MI, Machado FS, Tomich TR, Chizzotti ML, Campos MM, Pereira LGR. Technical note: Assessment of the oxygen pulse and heart rate method using respiration chambers and comparative slaughter for measuring heat production of cattle. J Dairy Sci 2016; 99:8885-8890. [PMID: 27544858 DOI: 10.3168/jds.2016-11157] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 03/10/2016] [Accepted: 07/12/2016] [Indexed: 11/19/2022]
Abstract
The objective of this study was to assess the oxygen pulse and heart rate (O2P-HR) technique using the respiration chamber (RC) and comparative slaughter (CS) methods for measuring the heat production (HP) of crossbred (Holstein × Gyr) yearling bulls. Twenty-four bulls were used. Six bulls were slaughtered at the beginning of the experiment as a reference group to estimate the initial empty body weight (BW) and energy content of the remaining animals. The remaining bulls were assigned to a completely randomized design with 3 levels of dry matter intake, with 6 replicates. The levels of dry matter intake were 1.2% of BW, 1.8% of BW and ad libitum, with target orts of 5%. The bulls were fed a diet consisting of 59.6% corn silage and 40.4% concentrate on a dry matter basis. The HP (kcal/BW0.75) was measured using 3 techniques, first using O2P-HR, followed by the RC and CS methods. The HP did not differ among assessed techniques, averaging 162.7kcal/BW0.75. The intercepts of the linear regressions (mean ± SE) were 64.82±25.515 (H0: intercept=0; P=0.024), 33.77±13.418 (H0: intercept=0), and 50.02±27.495 (H0: intercept=0) for O2P-HR versus RC, CS versus RC, and O2P-HR versus CS, respectively. The slopes of the linear regressions were 0.59±0.153 (H0: slope=1), 0.88±0.081 (H0: slope=1), and 0.62±0.155 (H0: slope=1) for O2P-HR versus RC, CS versus RC, and O2P-HR versus CS, respectively. The coefficients of determination were 0.52, 0.90, and 0.52 for O2P-HR versus RC, CS versus RC, and O2P-HR versus CS, respectively. The concordance correlation coefficients, 0.70 and 0.68, were moderate for O2P-HR versus RC and O2P-HR versus CS, respectively, but high, 0.90, for CS versus RC. The between-animal coefficient of variation was greater for the O2P-HR method (16.6%) compared with RC (7.7%) or CS (6.7%). We conclude that there was an agreement among the HP measurements detected using the assessed methods and that O2P-HR is able to predict HP in cattle with great accuracy but only moderate precision. Therefore, the O2P-HR method may have limitations in terms of assessing HP in low numbers of replications due to greater between-animal coefficient of variation than either the RC or CS methods.
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Affiliation(s)
- D B Oss
- Universidade Federal de Viçosa, Viçosa, MG, Brazil, 36570-900; CAPES, Ministério da Educação, Brasília, DF, Brazil, 70040-020
| | - M I Marcondes
- Universidade Federal de Viçosa, Viçosa, MG, Brazil, 36570-900.
| | - F S Machado
- Empresa Brasileira de Pesquisa Agropecuária, Embrapa Gado de Leite, Juiz de Fora, MG, Brazil, 36038-330
| | - T R Tomich
- Empresa Brasileira de Pesquisa Agropecuária, Embrapa Gado de Leite, Juiz de Fora, MG, Brazil, 36038-330
| | - M L Chizzotti
- Universidade Federal de Viçosa, Viçosa, MG, Brazil, 36570-900
| | - M M Campos
- Empresa Brasileira de Pesquisa Agropecuária, Embrapa Gado de Leite, Juiz de Fora, MG, Brazil, 36038-330
| | - L G R Pereira
- Empresa Brasileira de Pesquisa Agropecuária, Embrapa Gado de Leite, Juiz de Fora, MG, Brazil, 36038-330
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29
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Rodrigues-Junior VS, Villela AD, Gonçalves RS, Abbadi BL, Trindade RV, López-Gavín A, Tudó G, González-Martín J, Basso LA, de Souza MV, Campos MM, Santos DS. Mefloquine and its oxazolidine derivative compound are active against drug-resistant Mycobacterium tuberculosis strains and in a murine model of tuberculosis infection. Int J Antimicrob Agents 2016; 48:203-7. [DOI: 10.1016/j.ijantimicag.2016.04.029] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 04/14/2016] [Accepted: 04/16/2016] [Indexed: 12/30/2022]
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Azevedo RA, Machado FS, Campos MM, Furini PM, Rufino SRA, Pereira LGR, Tomich TR, Coelho SG. The effects of increasing amounts of milk replacer powder added to whole milk on feed intake and performance in dairy heifers. J Dairy Sci 2016; 99:8018-8027. [PMID: 27474984 DOI: 10.3168/jds.2015-10457] [Citation(s) in RCA: 13] [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] [Received: 09/28/2015] [Accepted: 05/01/2016] [Indexed: 11/19/2022]
Abstract
The aim of this study was to evaluate the effects on feed intake, heifer performance, and health of increasing the total solids (TS) content of liquid feed (whole milk) by adding increasing amounts of milk replacer powder during the pre- and postweaning periods. Crossbred Holstein-Gyr heifers (n=60) were assigned to 1 of 4 treatments (n=15 per group), which consisted of different TS concentrations: 12.5, 15.0, 17.5, and 20.0% of liquid feed. Heifers received 6 L of liquid feed per day, divided into 2 equal meals (0800 and 1600h) and provided in buckets, from 5 to 55d of age. From 56 to 59d of age, the total amount of liquid feed was reduced by half, maintaining only morning feedings. Heifers were weaned at 60d and monitored until 90d of age. Water and starter were provided ad libitum during the entire experiment. Corn silage was included in the diet during the postweaning period (70d of age). Feed intake and health scores were evaluated daily. Body weight and body frame development were recorded weekly. Starting at 14d, ruminal pH was measured every other week. Laboratory analysis determined that the actual TS contents of the liquid feed were 13.5, 16.1, 18.2, and 20.4%, for the proposed 12.5, 15.0, 17.5, and 20.0% TS treatments, respectively. The osmolality of liquid feed treatments was 265 to 533mOsm/L. Intake of liquid feed was similar among treatments from 4wk of age. During the preweaning period, starter intake, fecal score, and days with diarrhea were similar among treatments. Ruminal pH at weaning averaged 6.2 and was similar among treatments. Increasing concentrations of TS in the liquid feed were associated with linear increases in average daily gain, final body weight, and growth performance, but linear decreases in feed efficiency. During the postweaning period, intake of starter, corn silage, and water were similar among treatments, as well as average daily gain and feed efficiency. Final body weight and growth performance during the postweaning period also increased linearly with concentration of TS in liquid feed. Increasing the concentration of TS in liquid feed up to 20.4% increased performance and body frame development in dairy heifers during the pre- and postweaning periods and had no effects on solid feed intake or health.
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Affiliation(s)
- R A Azevedo
- Department of Animal Science, School of Veterinary Medicine, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 30161-970, Brazil
| | - F S Machado
- Embrapa Dairy Cattle, Juiz de Fora, Minas Gerais, 36038-330, Brazil
| | - M M Campos
- Embrapa Dairy Cattle, Juiz de Fora, Minas Gerais, 36038-330, Brazil
| | - P M Furini
- Department of Animal Science, School of Veterinary Medicine, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 30161-970, Brazil
| | - S R A Rufino
- Department of Animal Science, School of Veterinary Medicine, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 30161-970, Brazil
| | - L G R Pereira
- Embrapa Dairy Cattle, Juiz de Fora, Minas Gerais, 36038-330, Brazil
| | - T R Tomich
- Embrapa Dairy Cattle, Juiz de Fora, Minas Gerais, 36038-330, Brazil
| | - S G Coelho
- Department of Animal Science, School of Veterinary Medicine, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 30161-970, Brazil.
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31
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Buck HS, Calixto JB, Pesquero JB, Campos MM, Viel TA, Costa-Neto CM. Highlight: Kinin 2015 at São Paulo, Brazil. Biol Chem 2016; 397:281-2. [DOI: 10.1515/hsz-2016-0115] [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]
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Pissinate K, Villela AD, Rodrigues-Junior V, Giacobbo BC, Grams ES, Abbadi BL, Trindade RV, Roesler Nery L, Bonan CD, Back DF, Campos MM, Basso LA, Santos DS, Machado P. 2-(Quinolin-4-yloxy)acetamides Are Active against Drug-Susceptible and Drug-Resistant Mycobacterium tuberculosis Strains. ACS Med Chem Lett 2016; 7:235-9. [PMID: 26985307 DOI: 10.1021/acsmedchemlett.5b00324] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [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: 08/10/2015] [Accepted: 01/11/2016] [Indexed: 01/05/2023] Open
Abstract
2-(Quinolin-4-yloxy)acetamides have been described as potent in vitro inhibitors of Mycobacterium tuberculosis growth. Herein, additional chemical modifications of lead compounds were carried out, yielding highly potent antitubercular agents with minimum inhibitory concentration (MIC) values as low as 0.05 μM. Further, the synthesized compounds were active against drug-resistant strains and were devoid of apparent toxicity to Vero and HaCat cells (IC50s ≥ 20 μM). In addition, the 2-(quinolin-4-yloxy)acetamides showed intracellular activity against the bacilli in infected macrophages with action similar to rifampin, low risk of drug-drug interactions, and no sign of cardiac toxicity in zebrafish (Danio rerio) at 1 and 5 μM. Therefore, these data indicate that this class of compounds may furnish candidates for future development to, hopefully, provide drug alternatives for tuberculosis treatment.
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Affiliation(s)
- Kenia Pissinate
- Instituto
Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB),
Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
| | - Anne Drumond Villela
- Instituto
Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB),
Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
- Programa
de Pós-Graduação em Medicina e Ciências
da Saúde, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
| | - Valnês Rodrigues-Junior
- Instituto
Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB),
Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
- Programa
de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
| | - Bruno Couto Giacobbo
- Instituto
Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB),
Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
- Programa
de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
| | - Estêvão Silveira Grams
- Instituto
Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB),
Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
| | - Bruno Lopes Abbadi
- Instituto
Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB),
Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
- Programa
de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
| | - Rogério Valim Trindade
- Instituto
Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB),
Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
- Programa
de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
| | - Laura Roesler Nery
- Laboratório
de Neuroquímica e Psicofarmacologia, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto
Alegre, RS, Brazil
| | - Carla Denise Bonan
- Programa
de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
- Laboratório
de Neuroquímica e Psicofarmacologia, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto
Alegre, RS, Brazil
| | - Davi Fernando Back
- Departamento
de Química, Laboratório de Materiais Inorgânicos, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Maria Martha Campos
- Instituto
Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB),
Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
- Programa
de Pós-Graduação em Medicina e Ciências
da Saúde, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
- Programa
de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
| | - Luiz Augusto Basso
- Instituto
Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB),
Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
- Programa
de Pós-Graduação em Medicina e Ciências
da Saúde, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
- Programa
de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
| | - Diógenes Santiago Santos
- Instituto
Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB),
Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
- Programa
de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
| | - Pablo Machado
- Instituto
Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB),
Centro de Pesquisas em Biologia Molecular e Funcional, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
- Programa
de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, 90619-900 Porto Alegre, RS, Brazil
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Pereira TCB, Campos MM, Bogo MR. Copper toxicology, oxidative stress and inflammation using zebrafish as experimental model. J Appl Toxicol 2016; 36:876-85. [PMID: 26888422 DOI: 10.1002/jat.3303] [Citation(s) in RCA: 134] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 12/17/2015] [Accepted: 01/12/2016] [Indexed: 12/26/2022]
Abstract
Copper is an essential micronutrient and a key catalytic cofactor in a wide range of enzymes. As a trace element, copper levels are tightly regulated and both its deficit and excess are deleterious to the organism. Under inflammatory conditions, serum copper levels are increased and trigger oxidative stress responses that activate inflammatory responses. Interestingly, copper dyshomeostasis, oxidative stress and inflammation are commonly present in several chronic diseases. Copper exposure can be easily modeled in zebrafish; a consolidated model in toxicology with increasing interest in immunity-related research. As a result of developmental, economical and genetic advantages, this freshwater teleost is uniquely suitable for chemical and genetic large-scale screenings, representing a powerful experimental tool for a whole-organism approach, mechanistic studies, disease modeling and beyond. Copper toxicological and more recently pro-inflammatory effects have been investigated in both larval and adult zebrafish with breakthrough findings. Here, we provide an overview of copper metabolism in health and disease and its effects on oxidative stress and inflammation responses in zebrafish models. Copper-induced inflammation is highlighted owing to its potential to easily mimic pro-oxidative and pro-inflammatory features that combined with zebrafish genetic tractability could help further in the understanding of copper metabolism, inflammatory responses and related diseases. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Talita Carneiro Brandão Pereira
- Programa de Pós-Graduação em Medicina e Ciências da Saúde, PUCRS, Porto Alegre, Brasil.,Laboratório de Biologia Genômica e Molecular, PUCRS, Porto Alegre, Brasil
| | - Maria Martha Campos
- Programa de Pós-Graduação em Medicina e Ciências da Saúde, PUCRS, Porto Alegre, Brasil.,Instituto de Toxicologia e Farmacologia, PUCRS, Porto Alegre, Brasil.,Programa de Pós-Graduação em Odontologia, PUCRS, Porto Alegre, Brasil
| | - Maurício Reis Bogo
- Programa de Pós-Graduação em Medicina e Ciências da Saúde, PUCRS, Porto Alegre, Brasil.,Laboratório de Biologia Genômica e Molecular, PUCRS, Porto Alegre, Brasil.,Instituto de Toxicologia e Farmacologia, PUCRS, Porto Alegre, Brasil.,Programa de Pós-Graduação em Biologia Celular e Molecular, PUCRS, Porto Alegre, Brasil
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Dietrich F, Pietrobon Martins J, Kaiser S, Madeira Silva RB, Rockenbach L, Albano Edelweiss MI, Ortega GG, Morrone FB, Campos MM, Battastini AMO. The Quinovic Acid Glycosides Purified Fraction from Uncaria tomentosa Protects against Hemorrhagic Cystitis Induced by Cyclophosphamide in Mice. PLoS One 2015; 10:e0131882. [PMID: 26154141 PMCID: PMC4496084 DOI: 10.1371/journal.pone.0131882] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Accepted: 06/08/2015] [Indexed: 11/23/2022] Open
Abstract
Uncaria tomentosa is widely used in folk medicine for the treatment of numerous diseases, such as urinary tract disease. Hemorrhagic cystitis (HE) is an inflammatory condition of the bladder associated with the use of anticancer drugs such as cyclophosphamide (CYP). Sodium 2-mercaptoethanesulfonate (Mesna) has been used to prevent the occurrence of HE, although this compound is not effective in established lesions. It has been demonstrated that the purinergic system is involved in several pathophysiological events. Among purinergic receptors, P2X7 deserves attention because it is involved in HE induced by CYP and, therefore, can be considered a therapeutic target. The objective of this study was to investigate the potential therapeutic effect of the quinovic acid glycosides purified fraction (QAPF) from U. tomentosa in the mouse model of CYP-induced HE. Pretreatment with QAPF not only had a protective effect on HE-induced urothelial damage (edema, hemorrhage and bladder wet weight) but was also able to control visceral pain, decrease IL-1β levels and down-regulates P2X7 receptors, most likely by inhibit the neutrophils migration to the bladder. This research clearly demonstrates the promising anti-inflammatory properties of QAPF, supporting its use as complementary therapy. QAPF represents a promising therapeutic option for this pathological condition.
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Affiliation(s)
- Fabrícia Dietrich
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, ICBS, UFRGS, Porto Alegre, RS, Brazil
| | | | - Samuel Kaiser
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, UFRGS, Porto Alegre, RS, Brazil
| | - Rodrigo Braccini Madeira Silva
- Laboratório de Farmacologia Aplicada, Faculdade de Farmácia, PUCRS, Porto Alegre, RS, Brazil
- Instituto de Toxicologia e Farmacologia, PUCRS, Porto Alegre, RS, Brazil
| | - Liliana Rockenbach
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, ICBS, UFRGS, Porto Alegre, RS, Brazil
| | | | - George González Ortega
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, UFRGS, Porto Alegre, RS, Brazil
| | - Fernanda Bueno Morrone
- Laboratório de Farmacologia Aplicada, Faculdade de Farmácia, PUCRS, Porto Alegre, RS, Brazil
- Instituto de Toxicologia e Farmacologia, PUCRS, Porto Alegre, RS, Brazil
| | - Maria Martha Campos
- Instituto de Toxicologia e Farmacologia, PUCRS, Porto Alegre, RS, Brazil
- Faculdade de Odontologia, PUCRS, Porto Alegre, RS, Brazil
| | - Ana Maria Oliveira Battastini
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, ICBS, UFRGS, Porto Alegre, RS, Brazil
- Departamento de Bioquímica, ICBS, UFRGS, Porto Alegre, RS, Brazil
- * E-mail:
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Ribeiro LG, Machado FS, Campos MM, Guimaraes R, Tomich TR, Reis LG, Coombs C. Enteric methane mitigation strategies in ruminants: a review. REV COLOMB CIENC PEC 2015. [DOI: 10.17533/udea.rccp.v28n2a02] [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: 11/18/2022] Open
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36
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Silva RBM, Sperotto NDM, Andrade EL, Pereira TCB, Leite CE, de Souza AH, Bogo MR, Morrone FB, Gomez MV, Campos MM. Spinal blockage of P/Q- or N-type voltage-gated calcium channels modulates functional and symptomatic changes related to haemorrhagic cystitis in mice. Br J Pharmacol 2014; 172:924-39. [PMID: 25298144 DOI: 10.1111/bph.12966] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 08/14/2014] [Accepted: 09/23/2014] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND AND PURPOSE Spinal voltage-gated calcium channels (VGCCs) are pivotal regulators of painful and inflammatory alterations, representing attractive therapeutic targets. We examined the effects of epidural administration of the P/Q- and N-type VGCC blockers Tx3-3 and Phα1β, respectively, isolated from the spider Phoneutria nigriventer, on symptomatic, inflammatory and functional changes allied to mouse cyclophosphamide (CPA)-induced haemorrhagic cystitis (HC). The effects of P. nigriventer-derived toxins were compared with those displayed by MVIIC and MVIIA, extracted from the cone snail Conus magus. EXPERIMENTAL APPROACH HC was induced by a single i.p. injection of CPA (300 mg·kg(-1) ). Dose- and time-related effects of spinally administered P/Q and N-type VGCC blockers were assessed on nociceptive behaviour and macroscopic inflammation elicited by CPA. The effects of toxins were also evaluated on cell migration, cytokine production, oxidative stress, functional cystometry alterations and TRPV1, TRPA1 and NK1 receptor mRNA expression. KEY RESULTS The spinal blockage of P/Q-type VGCC by Tx3-3 and MVIIC or N-type VGCC by Phα1β attenuated nociceptive and inflammatory events associated with HC, including bladder oxidative stress and cytokine production. CPA produced a slight increase in bladder TRPV1 and TRPA1 mRNA expression, which was reversed by all the toxins tested. Noteworthy, Phα1β strongly prevented bladder neutrophil migration, besides HC-related functional alterations, and its effects were potentiated by co-injecting the selective NK1 receptor antagonist CP-96345. CONCLUSIONS AND IMPLICATIONS Our results shed new light on the role of spinal P/Q and N-type VGCC in bladder dysfunctions, pointing out Phα1β as a promising alternative for treating complications associated with CPA-induced HC.
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Affiliation(s)
- R B M Silva
- Postgraduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil; Institute of Toxicology and Pharmacology, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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37
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38
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Nicoletti NF, Erig TC, Zanin RF, Pereira TCB, Bogo MR, Campos MM, Morrone FB. Mechanisms involved in kinin-induced glioma cells proliferation: the role of ERK1/2 and PI3K/Akt pathways. J Neurooncol 2014; 120:235-44. [DOI: 10.1007/s11060-014-1549-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 07/06/2014] [Indexed: 11/29/2022]
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39
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Cruz FF, Leite CE, Pereira TCB, Bogo MR, Bonan CD, Battastini AMO, Campos MM, Morrone FB. Assessment of mercury chloride-induced toxicity and the relevance of P2X7 receptor activation in zebrafish larvae. Comp Biochem Physiol C Toxicol Pharmacol 2013; 158:159-64. [PMID: 23872137 DOI: 10.1016/j.cbpc.2013.07.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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: 05/07/2013] [Revised: 07/09/2013] [Accepted: 07/10/2013] [Indexed: 01/10/2023]
Abstract
Zebrafish (Danio rerio) has been adopted as a model for behavioral, immunological and toxicological studies. Mercury is a toxic heavy metal released into the environment. There is evidence indicating that heavy metals can modulate ionotropic receptors, including the purinergic receptor P2X7. Therefore, this study evaluated the in vivo effects of acute exposure to mercury chloride (HgCl2) in zebrafish larvae and to investigate the involvement of P2X7R in mercury-related toxicity. Larvae survival was evaluated for 24 h after exposure to HgCl2, ATP or A740003. The combination of ATP (1 mM) and HgCl2 (20 μg/L) decreased survival when compared to ATP 1 mM. The antagonist A740003 (300 and 500 nM) increased the survival time, and reversed the mortality caused by ATP and HgCl2 in association. Quantitative real time PCR showed a decrease of P2X7R expression in the larvae treated with HgCl2 (20 μg/L). Evaluating the oxidative stress our results showed decreased CAT (catalase) activity and increased MDA (malondialdehyde) levels. Of note, the combination of ATP with HgCl2 showed an additive effect. This study provides novel evidence on the possible mechanisms underlying the toxicity induced by mercury, indicating that it is able to modulate P2X7R in zebrafish larvae.
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Affiliation(s)
- Fernanda Fernandes Cruz
- Instituto de Toxicologia e Farmacologia, Pontifícia Universidade Católica do Rio Grande do Sul, Avenida Ipiranga, 6681, 90619-900 Porto Alegre, RS, Brazil; Faculdade de Farmácia, Pontifícia Universidade Católica do Rio Grande do Sul, Avenida Ipiranga, 6681, 90619-900 Porto Alegre, RS, Brazil
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40
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Leite CE, Maboni LDO, Cruz FF, Rosemberg DB, Zimmermann FF, Pereira TCB, Bogo MR, Bonan CD, Campos MM, Morrone FB, Battastini AMO. Involvement of purinergic system in inflammation and toxicity induced by copper in zebrafish larvae. Toxicol Appl Pharmacol 2013; 272:681-9. [PMID: 23933163 DOI: 10.1016/j.taap.2013.08.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 07/30/2013] [Accepted: 08/01/2013] [Indexed: 12/20/2022]
Abstract
The use of zebrafish (Danio rerio) is increasing as an intermediate preclinical model, to prioritize drug candidates for mammalian testing. As the immune system of the zebrafish is quite similar to that of mammals, models of inflammation are being developed for the screening of new drugs. The characterization of these models is crucial for studies that seek for mechanisms of action and specific pharmacological targets. It is well known that copper is a metal that induces damage and cell migration to hair cells of lateral line of zebrafish. Extracellular nucleotides/nucleosides, as ATP and adenosine (ADO), act as endogenous signaling molecules during tissue damage by exerting effects on inflammatory and immune responses. The present study aimed to characterize the inflammatory status, and to investigate the involvement of the purinergic system in copper-induced inflammation in zebrafish larvae. Fishes of 7 days post-fertilization were exposed to 10 μM of copper for a period of 24 h. The grade of oxidative stress, inflammatory status, copper uptake, the activity and the gene expression of the enzymes responsible for controlling the levels of nucleotides and adenosine were evaluated. Due to the copper accumulation in zebrafish larvae tissues, the damage and oxidative stress were exacerbated over time, resulting in an inflammatory process involving IL-1β, TNF-α, COX-2 and PGE2. Within the purinergic system, the mechanisms that control the ADO levels were the most involved, mainly the reactions performed by the isoenzyme ADA 2. In conclusion, our data shed new lights on the mechanisms related to copper-induced inflammation in zebrafish larvae.
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Affiliation(s)
- Carlos Eduardo Leite
- Instituto de Toxicologia e Farmacologia, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, CEP 90619-900, Brazil; Programa de Pós-Graduação em Medicina: Ciências Médicas, Universidade Federal do Rio Grande do Sul, Porto Alegre, CEP 90035-003, Brazil.
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41
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Deves C, de Assunção TM, Ducati RG, Campos MM, Basso LA, Santos DS, Batista EL. The transition state analog inhibitor of Purine Nucleoside Phosphorylase (PNP) Immucillin-H arrests bone loss in rat periodontal disease models. Bone 2013; 52:167-75. [PMID: 23026564 DOI: 10.1016/j.bone.2012.09.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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] [Received: 12/20/2011] [Revised: 08/14/2012] [Accepted: 09/21/2012] [Indexed: 12/19/2022]
Abstract
Purine nucleoside phosphorylase (PNP) is a purine-metabolizing enzyme that catalyzes the reversible phosphorolysis of 6-oxypurine (deoxy)nucleosides to their respective bases and (deoxy)ribose-1-phosphate. It is a key enzyme in the purine salvage pathway of mammalian cells. The present investigation sought to determine whether the PNP transition state analog inhibitor (Immucillin-H) arrests bone loss in two models of induced periodontal disease in rats. Periodontal disease was induced in rats using ligature or LPS injection followed by administration of Immucillin-H for direct analysis of bone loss, histology and TRAP staining. In vitro osteoclast differentiation and activation of T CD4+ cells in the presence of Immucillin-H were carried out for assessment of RANKL expression, PNP and Cathepsin K activity. Immucillin-H inhibited bone loss induced by ligatures and LPS, leading to a reduced number of infiltrating osteoclasts and inflammatory cells. In vitro assays revealed that Immucillin-H could not directly abrogate differentiation of osteoclast precursor cells, but affected lymphocyte-mediated osteoclastogenesis. On the other hand, incubation of pre-activated T CD4+ with Immucillin-H decreased RANKL secretion with no compromise of cell viability. The PNP transition state analog Immucillin-H arrests bone loss mediated by T CD4+ cells with no direct effect on osteoclasts. PNP inhibitor may have an impact in the treatment of diseases characterized by the presence of pathogens and imbalances of bone metabolism.
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Affiliation(s)
- Candida Deves
- Graduate Program in Cellular and Molecular Biology, Centro de Pesquisas/ Biologia Molecular e Funcional (CP-BMF), Pontifícia Universidade Católica do Rio Grande do Sul-PUCRS, RS, Brazil
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42
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Sgnaolin V, Pereira TCB, Bogo MR, Zanin R, Battastini AMO, Morrone FB, Campos MM. Functional and molecular characterization of kinin B1 and B 2 receptors in human bladder cancer: implication of the PI3Kγ pathway. Invest New Drugs 2012; 31:812-22. [PMID: 23224295 DOI: 10.1007/s10637-012-9907-6] [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] [Received: 08/15/2012] [Accepted: 11/13/2012] [Indexed: 11/28/2022]
Abstract
Kinins and their receptors have been recently implicated in cancer. Using functional and molecular approaches, we investigated the relevance of kinin B1 and B2 receptors in bladder cancer. Functional studies were conducted using bladder cancer cell lines, and human biopsies were employed for molecular studies. Both B1 des-Arg(9)-BK and B2 BK receptor agonists stimulated the proliferation of grade 3-derived T24 bladder cancer cells. Furthermore, treatment with B1 and B2 receptor antagonists (SSR240612 and HOE140) markedly inhibited the proliferation of T24 cells. Only higher concentrations of BK increased the proliferation of the grade 1 bladder cancer cell line RT4, while des-Arg(9)-BK completely failed to induce its proliferation. Real-time PCR revealed that the mRNA expression of kinin receptors, particularly B1 receptors, was increased in T24 cells relative to RT4 cells. Data from bladder cancer human biopsies revealed that B1 receptor expression was increased in all tumor samples and under conditions of chronic inflammation. We also show novel evidence demonstrating that the pharmacological inhibition of PI3Kγ (phosphatidylinositol 3-kinase) with AS252424, concentration-dependently reduced T24 cell proliferation induced by BK or des-Arg(9)-BK. Finally, the incubation of T24 cells with kinin agonists led to a marked activation of the PI3K/AKT and ERK 1/2 signaling pathways, whereas p38 MAP kinase remained unaffected. Kinin receptors, especially B1 receptors, appear to be implicated in bladder cancer progression. It is tempting to suggest that selective kinin antagonists might represent potential alternative therapies for bladder cancer.
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Affiliation(s)
- V Sgnaolin
- Prostgraduate Program in Medicine and Health Sciences, Pontificia Universidade Católica do Rio Grande do Sul, Avenida Ipiranga 6681, Partenon, 90619-900 Porto Alegre, RS, Brazil
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Martins JP, Silva RBM, Coutinho-Silva R, Takiya CM, Battastini AMO, Morrone FB, Campos MM. The role of P2X7 purinergic receptors in inflammatory and nociceptive changes accompanying cyclophosphamide-induced haemorrhagic cystitis in mice. Br J Pharmacol 2012; 165:183-96. [PMID: 21675966 DOI: 10.1111/j.1476-5381.2011.01535.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND AND PURPOSE ATP is released in response to cellular damage, and P2X7 receptors have an essential role in the onset and maintenance of pathological changes. Haemorrhagic cystitis (HC) is a well-known adverse effect of therapy with cyclophosphamide used for the treatment of many solid tumours and autoimmune conditions. Here we have evaluated the role of P2X7 receptors in a model of HC induced by cyclophosphamide. EXPERIMENTAL APPROACH Effects of pharmacological antagonism or genetic deletion of P2X7 receptor on cyclophosphamide-induced HC in mice was assessed by nociceptive and inflammatory measures. In addition, the presence of immunoreactive P2X7 receptors was assessed by immunohistochemistry. KEY RESULTS Pretreatment with the selective P2X7 receptor antagonist A-438079 or genetic ablation of P2X7 receptors reduced nociceptive behaviour scores in the HC model. The same strategies decreased both oedema and haemorrhage indices, on macroscopic or histological evaluation. Treatment with A-438079 decreased the staining for c-Fos in the lumbar spinal cord and brain cortical areas. Treatment with A-438079 also prevented the increase of urinary bladder myeloperoxidase activity and macrophage migration induced by cyclophosphamide and reduced the tissue levels of IL-1β and TNF-α. Finally, P2X7 receptors were markedly up-regulated in the bladders of mice with cyclophosphamide-induced HC. CONCLUSIONS AND IMPLICATIONS P2X7 receptors were significantly involved in a model of HC induced by cyclophosphamide. Pharmacological inhibition of these receptors might represent a new therapeutic option for this pathological condition.
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Affiliation(s)
- J P Martins
- Faculdade de Medicina, PUCRS, Porto Alegre, RS, Brazil
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Gehring MP, Pereira TCB, Zanin RF, Borges MC, Braga Filho A, Battastini AMO, Bogo MR, Lenz G, Campos MM, Morrone FB. P2X7 receptor activation leads to increased cell death in a radiosensitive human glioma cell line. Purinergic Signal 2012; 8:729-39. [PMID: 22644907 DOI: 10.1007/s11302-012-9319-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [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: 01/09/2012] [Accepted: 05/02/2012] [Indexed: 11/28/2022] Open
Abstract
Gliomas are the most lethal tumors of central nervous system. ATP is an important signaling molecule in CNS and it is a selective P2X7 purinergic receptor ligand at high concentrations. Herein, we investigated whether the activation of P2X7R might be implicated in death of a radiosensitive human glioma lineage. The effects of P2X7R agonists (ATP and BzATP) and irradiation (2 Gy) on glioma cells were analyzed by MTT assay and annexin-V/PI determination, whereas mRNA and protein P2X7R expression was assessed by qRT-PCR and flow cytometry, respectively. P2X7R pore formation was functionality examined by analyzing ethidium bromide uptake. The human glioma cells U-138 MG and U-251 MG were resistant to death when treated with either ATP (5 mM) or BzATP (100 μM), but the radiosensitive M059J glioma cells displayed a significant decrease of cell viability (32.4 ± 4.1 % and 25.6 ± 3.3 %, respectively). The M059J lineage expresses significantly higher mRNA P2X7R levels when compared to the U-138 MG and U-251 cell lines (0.40 ± 0.00; 0.28 ± 0.01, and 0.31 ± 0.01, respectively), and irradiation upregulated P2X7R expression (0.55 ± 0.08) in this lineage. Noteworthy, P2X7R protein doubled after irradiation on M059J lineage, and increased in 50 % and 42.6 % when comparing M059J-irradiated to irradiated U-138 MG and U-251 MG cells, respectively. Ethidium bromide uptake was significantly increased in 104 % and 77.8 % when comparing M059J to U-138 MG and U-251MG, respectively. Finally, the selective P2X7R antagonist A740003 significantly decreased the cell death caused by irradiation. We provide novel evidence indicating that M059J human glioma cell line is ATP-P2X7R sensitive, pointing out the relevance of the purinergic P2X7R on glioma radiosensitivity.
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Affiliation(s)
- Marina Petersen Gehring
- Laboratório de Farmacologia Aplicada, PUCRS, Av. Ipiranga, 6681, Prédio 12C, Sala 148, Partenon, Porto Alegre, RS, Brazil
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Spanemberg JC, Cherubini K, de Figueiredo MAZ, Gomes APN, Campos MM, Salum FG. Effect of an herbal compound for treatment of burning mouth syndrome: randomized, controlled, double-blind clinical trial. Oral Surg Oral Med Oral Pathol Oral Radiol 2012; 113:373-7. [DOI: 10.1016/j.oooo.2011.09.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Revised: 09/10/2011] [Accepted: 09/15/2011] [Indexed: 12/01/2022]
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Talbot S, Dias JP, Lahjouji K, Bogo MR, Campos MM, Gaudreau P, Couture R. Activation of TRPV1 by capsaicin induces functional kinin B(1) receptor in rat spinal cord microglia. J Neuroinflammation 2012; 9:16. [PMID: 22264228 PMCID: PMC3282640 DOI: 10.1186/1742-2094-9-16] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Accepted: 01/20/2012] [Indexed: 12/15/2022] Open
Abstract
Background The kinin B1 receptor (B1R) is upregulated by pro-inflammatory cytokines and oxydative stress, which are enhanced by transient receptor potential vanilloid subtype 1 (TRPV1) activation. To examine the link between TRPV1 and B1R in inflammatory pain, this study aimed to determine the ability of TRPV1 to regulate microglial B1R expression in the spinal cord dorsal horn, and the underlying mechanism. Methods B1R expression (mRNA, protein and binding sites) was measured in cervical, thoracic and lumbar spinal cord in response to TRPV1 activation by systemic capsaicin (1-50 mg/kg, s.c) in rats pre-treated with TRPV1 antagonists (capsazepine or SB-366791), the antioxidant N-acetyl-L-cysteine (NAC), or vehicle. B1R function was assessed using a tail-flick test after intrathecal (i.t.) injection of a selective B1R agonist (des-Arg9-BK), and its microglial localization was investigated by confocal microscopy with the selective fluorescent B1R agonist, [Nα-bodipy]-des-Arg9-BK. The effect of i.t. capsaicin (1 μg/site) was also investigated. Results Capsaicin (10 to 50 mg/kg, s.c.) enhanced time-dependently (0-24h) B1R mRNA levels in the lumbar spinal cord; this effect was prevented by capsazepine (10 mg/kg, i.p.; 10 μg/site, i.t.) and SB-366791 (1 mg/kg, i.p.; 30 μg/site, i.t.). Increases of B1R mRNA were correlated with IL-1β mRNA levels, and they were significantly less in cervical and thoracic spinal cord. Intrathecal capsaicin (1 μg/site) also enhanced B1R mRNA in lumbar spinal cord. NAC (1 g/kg/d × 7 days) prevented B1R up-regulation, superoxide anion production and NF-kB activation induced by capsaicin (15 mg/kg). Des-Arg9-BK (9.6 nmol/site, i.t.) decreased by 25-30% the nociceptive threshold at 1 min post-injection in capsaicin-treated rats (10-50 mg/kg) while it was without effect in control rats. Des-Arg9-BK-induced thermal hyperalgesia was blocked by capsazepine, SB-366791 and by antagonists/inhibitors of B1R (SSR240612, 10 mg/kg, p.o.), glutamate NMDA receptor (DL-AP5, 10 μg/site, i.t.), substance P NK-1 receptor (RP-67580, 10 μg/site, i.t.) and nitric oxide synthase (L-NNA, 10 μg/site, i.t.). The B1R fluorescent agonist was co-localized with an immunomarker of microglia (Iba-1) in spinal cord dorsal horn of capsaicin-treated rats. Conclusion This study highlights a new mechanism for B1R induction via TRPV1 activation and establishes a link between these two pro-nociceptive receptors in inflammatory pain.
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Affiliation(s)
- Sébastien Talbot
- Department of Physiology, Faculty of Medicine, Université de Montréal, C,P, 6128, Succursale Centre-ville, Montréal, H3C 3J7, Québec, Canada
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Brilhante Wolle CF, de Aguiar Zollmann L, Etges A, Vitalis GS, Leite CE, Campos MM. Effects of the antioxidant agent tempol on periapical lesions in rats with doxorubicin-induced cardiomyopathy. J Endod 2011; 38:191-5. [PMID: 22244634 DOI: 10.1016/j.joen.2011.11.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Revised: 11/11/2011] [Accepted: 11/17/2011] [Indexed: 12/22/2022]
Abstract
INTRODUCTION Cardiovascular diseases have been associated with increased risk of endodontic complications. This study evaluated the effects of the antioxidant agent tempol on periapical lesions in rats with doxorubicin-induced cardiomyopathy in comparison with control animals. METHODS Forty male Wistar rats were divided into 4 groups: (1) naïve rats orally treated with saline solution (10 mL/kg, during 21 days after periapical lesion induction); (2) naïve rats treated with tempol (30 and 50 mg/kg, during 21 days after periapical lesion induction) by oral pathway; (3) rats with doxorubicin-induced cardiomyopathy treated with saline solution by oral route (10 mL/kg, from day 3 to day 10 after initiating treatment with doxorubicin); and (4) rats with doxorubicin-induced cardiomyopathy orally treated with tempol (30 and 50 mg/kg, from day 3 to day 10 after initiating treatment with doxorubicin). Periapical lesions were induced on the first right mandibular molar tooth. After 21 days of apical periodontitis induction, the animals were killed, and the mandibles were collected for radiographic and histologic analysis. RESULTS The oral administration of tempol (50 mg/kg) was able to significantly prevent the establishment of periapical lesions in either control animals or rats submitted to the model of doxorubicin-induced cardiomyopathy, according to radiographic and histologic evaluation. Nevertheless, the protective effects of tempol were virtually greater in control animals in comparison with doxorubicin-treated rats, as indicated by histologic inflammatory assessment, which might be related to the increased production of free radicals under cardiomyopathy. CONCLUSIONS We provide novel evidence on the beneficial systemic effects of the antioxidant tempol on apical periodontitis in both control animals and rats with doxorubicin-elicited cardiomyopathy.
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Pereira PJS, Lazarotto LF, Leal PC, Lopes TG, Morrone FB, Campos MM. Inhibition of phosphatidylinositol-3 kinase γ reduces pruriceptive, inflammatory, and nociceptive responses induced by trypsin in mice. Pain 2011; 152:2861-2869. [DOI: 10.1016/j.pain.2011.09.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Revised: 08/14/2011] [Accepted: 09/16/2011] [Indexed: 10/16/2022]
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Lima-Garcia JF, Dutra RC, da Silva K, Motta EM, Campos MM, Calixto JB. The precursor of resolvin D series and aspirin-triggered resolvin D1 display anti-hyperalgesic properties in adjuvant-induced arthritis in rats. Br J Pharmacol 2011; 164:278-93. [PMID: 21418187 PMCID: PMC3174409 DOI: 10.1111/j.1476-5381.2011.01345.x] [Citation(s) in RCA: 156] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2010] [Revised: 02/04/2011] [Accepted: 02/07/2011] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND AND PURPOSE Resolution of inflammation is mediated by endogenous molecules with anti-inflammatory and pro-resolving activities and they have generated new possibilities for the treatment of inflammatory diseases. Here, we have investigated the possible anti-hyperalgesic effects of two lipids, aspirin-triggered resolvin D1 (AT-RvD1) and its precursor, 17(R)-hydroxy-4Z,7Z,10Z,13Z,15E,17R,19Z-docosahexaenoic acid (17(R)HDoHE). EXPERIMENTAL APPROACH The anti-hyperalgesic effects of both lipid mediators were evaluated, using mechanical and thermal stimuli, at different time-points in adjuvant-induced arthritis in rats. Cytokine levels were measured, and immunohistochemistry and real-time PCR for pro-inflammatory mediators were also performed. KEY RESULTS The precursor of resolvin D series, 17(R)HDoHE, given systemically, inhibited the development and the maintenance of mechanical hyperalgesia in acute inflammation. Such effects were likely to be associated with modulation of both NF-κB and COX-2 in dorsal root ganglia and spinal cord. 17(R)HDoHE was also effective against sub-chronic pain. Unexpectedly, repeated treatment with 17(R)HDoHE did not modify paw and joint oedema in the sub-chronic model, while joint stiffness was prevented. Notably, AT-RvD1 exhibited marked anti-hyperalgesic effects in acute inflammation when given systemically. The efficacy of long-term treatment with either 17(R)HDoHE or AT-RvD1 was partly related to decreased production of TNF-α and IL-1β in rat hind paw. CONCLUSIONS AND IMPLICATIONS Our findings provide fresh evidence for the anti-hyperalgesic properties of 17(R)HDoHE and its pro-resolution metabolite AT-RvD1. Such lipid mediators might be useful for treating pain associated with acute or chronic inflammation. LINKED ARTICLE This article is commented on by Xu and Ji, pp. 274-277 of this issue. To view this commentary visit http://dx.doi.org/10.1111/j.1476-5381.2011.01348.x.
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Affiliation(s)
- J F Lima-Garcia
- Department of Pharmacology, Centre of Biological Sciences, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
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Wagner C, Barth VC, de Oliveira SD, Campos MM. Effectiveness of the proton pump inhibitor omeprazole associated with calcium hydroxide as intracanal medication: an in vivo study. J Endod 2011; 37:1253-7. [PMID: 21846542 DOI: 10.1016/j.joen.2011.06.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 06/02/2011] [Accepted: 06/03/2011] [Indexed: 01/12/2023]
Abstract
INTRODUCTION The objective of this study was to evaluate the efficacy of the association of a proton pump inhibitor (omeprazole) with Ca(OH)(2) as intracanal medication in a rat model of periapical lesions. METHODS Periapical lesions were induced on the first right mandibular molar tooth of 36 male Wistar rats (6 per group). After 28 days, the distal canal of each tooth was prepared, filled with the respective dressing (negative control group, PEG 400; positive control group, Ca(OH)(2) + PEG400; test group, Ca(OH)(2) + omeprazole + PEG 400), and sealed with amalgam for 15 or 28 days. Microbiological samples were taken in 3 periods: S1, after 28 days of lesion induction; S2, after the biomechanical preparation; and S3, after the medication (15 and 28 days). RESULTS The radiographic and histologic analysis revealed that either Ca(OH)(2) or Ca(OH)(2) plus omeprazole dressings produced a reduction of periapical lesions at 28 days, when compared with the negative control group. The reduction of periapical lesions and inflammatory cell infiltration was visibly improved by associating omeprazole with Ca(OH)(2), with an increase of reparative bone areas. The microbiological assessment showed a significant decrease of colony-forming units count from S1 to S2 or S3 collecting times, but no differences were observed between the S2 and the S3 time-periods or among the experimental groups within the S3 period. Further bacterial characterization showed a possible selective activity of the medications. CONCLUSIONS Our data showed that association of omeprazole with Ca(OH)(2) favored a superior repair of rat periapical lesions and seemed to display different selective activity over endodontic microbiota, in comparison with the conventional Ca(OH)(2) dressing.
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Affiliation(s)
- Cláudia Wagner
- Postgraduate Program of Dental College, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
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