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Ramos JGVDS, Richter CP, Silva MA, Singolano GL, Hauagge G, Lorençon E, Junior ILC, Edwiges T, de Arruda PV, Vidal CMDS. Effects of ciprofloxacin on biogas production and microbial community composition in anaerobic digestion of swine wastewater in ASBR type reactor. Environ Technol 2024; 45:2076-2088. [PMID: 36621001 DOI: 10.1080/09593330.2022.2164744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
In swine farming, antibiotics are often used to reduce disease and promote animal growth. Part of these compounds is not absorbed by the swine body, being excreted and later reaching the treatment systems, soil, and nearby waterbodies. This research sought to investigate the influence of adding ciprofloxacin (CIP) on the anaerobic digestion of swine wastewater. For that, a bench-scale anaerobic sequential batch reactor (ASBR) was used, with 5 L of working volume in six different phases, with volumetric organic loading rate (VOLR) and CIP dosage variation. According to the results, the optimal VOLR for the reactor was 0.60 ± 0.11 gSV L-1 d-1, resulting in biogas productivity of 0.51 ± 0.03 Lbiogas L-1 d-1. After initial stability, adding substrate with 0.5 mgCIP L-1 resulted in an abrupt drop of 82% in the productivity from the 7th to 11th day of addition, coinciding with volatile acids accumulation. Afterward, the reactor recovered and reached apparent stability, with productivity similar to the previous step without the drug. For 2.5 mgCIP L-1 in the substrate, the biogas productivity at equilibrium was 11.8% lower than in the phases with the same VOLR and 0.0 and 0.5 mgCIP L-1. Organic matter removals near 80% were achieved for both dosages. The 16S rRNA metagenomic analyses showed an increase in the relative abundance of most of the phyla found, indicating that the dosages used allowed the acclimatization of microorganisms and possibly the compound biodegradation.
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Affiliation(s)
- José Gustavo Venâncio da Silva Ramos
- Civil Engineering Academic Department, The Federal University of Technology - Paraná (UTFPR), Toledo, Brazil
- Technical Residency in Environmental Engineering and Management, State University of Ponta Grossa (UEPG), Ponta Grossa, Brazil
| | - Camila Palacio Richter
- Bioprocess and Biotechnology Engineering Academic Department, The Federal University of Technology - Paraná (UTFPR), Toledo, Brazil
| | - Maria Alice Silva
- Bioprocess and Biotechnology Engineering Academic Department, The Federal University of Technology - Paraná (UTFPR), Toledo, Brazil
| | - Giordana Longo Singolano
- Civil Engineering Academic Department, The Federal University of Technology - Paraná (UTFPR), Toledo, Brazil
| | - Gabriel Hauagge
- Bioprocess and Biotechnology Engineering Academic Department, The Federal University of Technology - Paraná (UTFPR), Toledo, Brazil
| | - Eduarda Lorençon
- Bioprocess and Biotechnology Engineering Academic Department, The Federal University of Technology - Paraná (UTFPR), Toledo, Brazil
| | | | - Thiago Edwiges
- Biological and Environmental Sciences, The Federal University of Technology - Paraná (UTFPR), Medianeira, Brazil
| | - Priscila Vaz de Arruda
- Bioprocess and Biotechnology Engineering Academic Department, The Federal University of Technology - Paraná (UTFPR), Toledo, Brazil
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Mesquita GP, Costa MCC, Silva MA, Araújo LG, Vila Nova BG, Castro ÉJM, Castelo Branco LCM, Silva RCSD, Marques SG, Abreu AG. Antimicrobial resistance of Pseudomonas aeruginosa isolated from patients with pneumonia during the COVID-19 pandemic and pre-pandemic periods in Northeast Brazil. Braz J Med Biol Res 2023; 56:e12726. [PMID: 37493772 PMCID: PMC10361641 DOI: 10.1590/1414-431x2023e12726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 06/22/2023] [Indexed: 07/27/2023] Open
Abstract
Healthcare-related infections caused by resistant microorganisms are a severe public health problem and are becoming increasingly prevalent in the hospital environment, especially Pseudomonas aeruginosa. This work aimed to evaluate the resistance profile of Pseudomonas aeruginosa to antimicrobials before the COVID-19 pandemic and during the pandemic period. Bacteria strains were obtained from tracheal aspiration, sputum, and bronchoalveolar lavage for diagnosis and phenotypic characterization. Matrix assisted laser-desorption ionization-time of flight mass spectrometry (MALD-TOF MS) was used to identify strains. Automated Phoenix and VITEK® 2 Compact system and the disc diffusion method were performed to determine the antimicrobial susceptibility profile. A total of 41,000 medical reports from adult patients with pneumonia were analyzed. Of these, 951 patients were positive for P. aeruginosa, of which 373 were related to the pre-pandemic period and 578 to the pandemic period. Older men (≥60 years) were more prevalent in both periods. P. aeruginosa strains were resistant to imipenem in both periods: 38.8 and 42.5%, respectively, followed by meropenem (34.2 and 39.2%), ciprofloxacin (33.6 and 36.7%), and levofloxacin (34.9 and 43.5%). Intensive care units had the highest percentage of affected patients (62 and 65%) compared with other sectors, with a prevalence of 71% in the public network before COVID-19 and 59% during the pandemic. Our data showed a prevalence of P. aeruginosa in elderly patients in both the pre-pandemic and pandemic periods. In addition, an increase in P. aeruginosa resistance to beta-lactams, quinolones, carbapenems, and cephalosporins was observed during the COVID-19 pandemic compared with the period before the pandemic, especially in ICUs.
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Affiliation(s)
- G P Mesquita
- Laboratório de Patogenicidade Microbiana, Universidade Ceuma, São Luís, MA, Brasil
| | - M C C Costa
- Laboratório de Patogenicidade Microbiana, Universidade Ceuma, São Luís, MA, Brasil
| | - M A Silva
- Laboratório de Patogenicidade Microbiana, Universidade Ceuma, São Luís, MA, Brasil
| | - L G Araújo
- Laboratório de Patogenicidade Microbiana, Universidade Ceuma, São Luís, MA, Brasil
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís, MA, Brasil
| | - B G Vila Nova
- Laboratório de Patogenicidade Microbiana, Universidade Ceuma, São Luís, MA, Brasil
| | - É J M Castro
- Laboratório de Patogenicidade Microbiana, Universidade Ceuma, São Luís, MA, Brasil
| | | | | | | | - A G Abreu
- Laboratório de Patogenicidade Microbiana, Universidade Ceuma, São Luís, MA, Brasil
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís, MA, Brasil
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Bernabé CV, Craveiro CFF, Mattos DC, Aride PHR, Souza AB, Bassul LA, Polese MF, Cardoso LD, Silva MA, Lavander HD. Ovarian development of Xiphopenaeus kroyeri (Crustacea: Penaeidae) from Espírito Santo, southeastern Brazil. BRAZ J BIOL 2023; 82:e266035. [PMID: 36629542 DOI: 10.1590/1519-6984.266035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 12/07/2022] [Indexed: 01/11/2023] Open
Abstract
This study aimed to describe and characterize the stages of gonadal development of females of Xiphopenaeus kroyeri caught by artisanal fishers in Espírito Santo state, southeastern region of Brazil. All females (n= 1,831) were subjected to macroscopic and microscopic morphological analysis (n= 333) of the ovaries. From the morphology, coloration and degree of turgidity of the fresh ovary, macroscopic analysis determined five stages of gonadal development. The macroscopic analysis showed difficulties in differentiating the immature and spawning stages due to the similarity between the colors of the ovaries, which confirms the need to perform the macroscopic and histological analysis simultaneously for fisheries management studies. Microscopic observations allowed us to analyze the following six stages of cell development: oogonia, previtellogenic oocytes, primary vitellogenic oocytes, secondary vitellogenic oocytes, mature oocytes and atretic oocytes. From this, five stages of gonadal development were defined, i.e., immature, early development, advanced development, mature and spawned. The presence of peripheral bodies was not observed in this species. These results help to clarify and better understand the reproductive and population aspects of the Atlantic Seabob, which are fundamental for the establishment of management and conservation measures of this resource.
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Affiliation(s)
- C V Bernabé
- Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo - IFES, Piúma, ES, Brasil
| | - C F F Craveiro
- Universidade Federal Rural de Pernambuco - UFRPE, Departamento de Pesca e Aquicultura, Recife, PE, Brasil
| | - D C Mattos
- Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo - IFES, Piúma, ES, Brasil
| | - P H R Aride
- Instituto Federal de Educação, Ciência e Tecnologia do Amazonas - IFAM, Manaus, AM, Brasil
| | - A B Souza
- Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo - IFES, Piúma, ES, Brasil
| | - L A Bassul
- Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo - IFES, Piúma, ES, Brasil
| | - M F Polese
- Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo - IFES, Piúma, ES, Brasil
| | - L D Cardoso
- Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo - IFES, Piúma, ES, Brasil
| | - M A Silva
- Universidade Federal do Espírito Santo - UFES, Alegre, ES, Brasil
| | - H D Lavander
- Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo - IFES, Piúma, ES, Brasil
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Queiroz APA, Silva MA, Silva PCP, Souza MF, Botelho RR, Freitas CMBM. UTILIZAÇÃO DE INSTRUMENTO DE AVALIAÇÃO SITUACIONAL DA SEGURANÇA NA TERAPIA MEDICAMENTOSA EM FARMÁCIAS PÚBLICAS. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.1034] [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: 11/06/2022] Open
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Queiroz APA, Silva MA, Junior SJC, Freitas CMBM, Lima DB, Gomes GB. ANALISE DAS AQUISIÇÕES PÚBLICAS DE MEDICAMENTOS COM EFICIÊNCIA MITO OU REALIDADE: RELATO DE EXPERIÊNCIA DE UMA FUNDAÇÃO PUBLICA. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.1033] [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: 11/11/2022] Open
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de Macedo V, Santos GS, Silva RN, Couto CNM, Bastos C, Viecelli E, Mateus MN, Graf ME, Gonçalves RB, Silva MA, Bernardini PDB, Grando RSP, Boaventura VP, Pereira HSR, Levin ASS. Healthcare-associated infections: a threat to the survival of patients with COVID-19 in intensive care units. J Hosp Infect 2022; 126:109-115. [PMID: 35623469 PMCID: PMC9131443 DOI: 10.1016/j.jhin.2022.05.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/06/2022] [Accepted: 05/17/2022] [Indexed: 11/22/2022]
Abstract
Background Wide variation in mortality rates among critically ill patients with coronavirus disease 2019 (COVID-19) has been reported. This study evaluated whether healthcare-associated infections (HAI) are a risk factor for death among patients with severe COVID-19 in the intensive care unit (ICU). Methods This retrospective cohort study included patients with severe COVID-19 hospitalized in the ICU of four hospitals in the city of Curitiba, Brazil. Patients with COVID-19 who died during ICU hospitalization were compared with those who were discharged. A second analysis compared patients who developed HAI in the ICU with those who did not. Multiple logistic regression models were used to control for confounders. Results In total, 400 patients were included, and 123 (31%) patients developed HAI. The most common HAI was lower respiratory tract infection (67%). Independent risk factors for death were: age [odds ratio (OR) 1.75, 95% confidence interval (CI) 1.43–2.15; P<0.0001]; clinical severity score (OR 2.21, 95% CI 1.70–2.87; P<0.0001); renal replacement therapy (OR 12.8, 95% CI 5.78–28.6; P<0.0001); and HAI (OR 5.9, 95% CI 3.31–10.5; P<0.0001). A longer interval between symptom onset and hospital admission was protective against death (OR 0.93, 95% CI 0.88–0.98; P=0.017). The only independent factors associated with HAI were high C-reactive protein and low PaO2/FiO2 ratio. Conclusions No factors that could point to a high-risk group for HAI acquisition were identified. However, age, dialysis and HAI increased the risk of death in ICU patients with severe COVID-19; of these, HAI is the only preventable risk factor.
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Affiliation(s)
- V de Macedo
- Hospital Infection Control and Epidemiology Center, Santa Casa de Curitiba, Curitiba, Paraná, Brazil; Positive University, Medicine School, Curitiba, Paraná, Brazil; Department of Infectious Diseases, Faculdade de Medicina, Universidade de São Paulo, São Paulo, São Paulo, Brazil.
| | - G S Santos
- Hospital Infection Control and Epidemiology Center, Rehabilitation Hospital, Curitiba, Paraná, Brazil
| | - R N Silva
- Infection Control Program, Hospital de Clínicas, Curitiba, Paraná, Brazil
| | - C N M Couto
- Pontifical Catholic University of Paraná, Medicine School, Curitiba, Paraná, Brazil
| | - C Bastos
- Department of Infectious Diseases, Faculdade de Medicina, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - E Viecelli
- Department of Infectious Diseases, Faculdade de Medicina, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - M N Mateus
- Department of Infectious Diseases, Faculdade de Medicina, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - M E Graf
- Hospital Infection Control and Epidemiology Center, Trabalhador Hospital, Curitiba, Paraná, Brazil
| | - R B Gonçalves
- Hospital Infection Control and Epidemiology Center, Trabalhador Hospital, Curitiba, Paraná, Brazil
| | - M A Silva
- Hospital Infection Control and Epidemiology Center, Trabalhador Hospital, Curitiba, Paraná, Brazil
| | - P D B Bernardini
- Hospital Infection Control and Epidemiology Center, Trabalhador Hospital, Curitiba, Paraná, Brazil
| | - R S P Grando
- Hospital Infection Control and Epidemiology Center, Trabalhador Hospital, Curitiba, Paraná, Brazil
| | - V P Boaventura
- Hospital Infection Control and Epidemiology Center, Trabalhador Hospital, Curitiba, Paraná, Brazil
| | - H S R Pereira
- Hospital Infection Control and Epidemiology Center, Trabalhador Hospital, Curitiba, Paraná, Brazil
| | - A S S Levin
- Department of Infectious Diseases, Faculdade de Medicina, Universidade de São Paulo, São Paulo, São Paulo, Brazil
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Hughes DL, Hughes A, White PB, Silva MA. Acute pancreatitis in pregnancy: meta-analysis of maternal and fetal outcomes. Br J Surg 2021; 109:12-14. [PMID: 34179950 PMCID: PMC10364714 DOI: 10.1093/bjs/znab221] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/13/2020] [Accepted: 05/14/2021] [Indexed: 12/31/2022]
Abstract
The impact of acute pancreatitis in pregnancy on maternal and fetal outcomes is unclear. Historical case series document very poor outcomes, with maternal mortality rates of 20 per cent and fetal loss of 50 per cent. However, this is based on outdated clinical practice. This meta-analysis quantified both maternal and fetal outcomes following acute pancreatitis in pregnancy based on the concurrent literature. Maternal and fetal outcomes after acute pancreatitis in pregnancy have improved with advances in the management of pancreatitis.
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Affiliation(s)
- D Ll Hughes
- Department of Oncology, University of Oxford, Oxford, UK.,Department of Hepatobiliary and Pancreatic Surgery, Oxford University Hospitals NHS, Oxford, UK
| | - A Hughes
- Cardiff University Medical School, Cardiff, UK
| | - P B White
- Department of Obstetrics and Gynaecology, University Hospital of Wales, Cardiff, UK
| | - M A Silva
- Department of Hepatobiliary and Pancreatic Surgery, Oxford University Hospitals NHS, Oxford, UK
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den Boer RB, Jones KI, Ash S, van Boxel GI, Gillies RS, O'Donnell T, Ruurda JP, Sgromo B, Silva MA, Maynard ND. Impact on postoperative complications of changes in skeletal muscle mass during neoadjuvant chemotherapy for gastro-oesophageal cancer. BJS Open 2020; 4:847-854. [PMID: 32841538 PMCID: PMC7528528 DOI: 10.1002/bjs5.50331] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 04/08/2020] [Accepted: 06/29/2020] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Risk assessment is relevant to predict postoperative outcomes in patients with gastro-oesophageal cancer. This cohort study aimed to assess body composition changes during neoadjuvant chemotherapy and investigate their association with postoperative complications. METHODS Consecutive patients with gastro-oesophageal cancer undergoing neoadjuvant chemotherapy and surgery with curative intent between 2016 and 2019 were identified from a specific database and included in the study. CT images before and after neoadjuvant chemotherapy were used to assess the skeletal muscle index, sarcopenia, and subcutaneous and visceral fat index. RESULTS In a cohort of 199 patients, the mean skeletal muscle index decreased during neoadjuvant therapy (from 51·187 to 49·19 cm2 /m2 ; P < 0·001) and the rate of sarcopenia increased (from 42·2 to 54·3 per cent; P < 0·001). A skeletal muscle index decrease greater than 5 per cent was not associated with an increased risk of total postoperative complications (odds ratio 0·91, 95 per cent c.i. 0·52 to 1·59; P = 0·736) or severe complications (odds ratio 0·66, 0·29 to 1·53; P = 0·329). CONCLUSION Skeletal muscle index decreased during neoadjuvant therapy but was not associated with postoperative complications.
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Affiliation(s)
- R B den Boer
- Departments of Surgery, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands
| | - K I Jones
- Oxford University Hospitals NHS Trust, Oxford University, Oxford, UK
| | - S Ash
- Oxford University Hospitals NHS Trust, Oxford University, Oxford, UK
| | | | - R S Gillies
- Oxford University Hospitals NHS Trust, Oxford University, Oxford, UK
| | - T O'Donnell
- Oxford University Hospitals NHS Trust, Oxford University, Oxford, UK
| | - J P Ruurda
- Departments of Surgery, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands
| | - B Sgromo
- Oxford University Hospitals NHS Trust, Oxford University, Oxford, UK
| | - M A Silva
- Oxford University Hospitals NHS Trust, Oxford University, Oxford, UK
| | - N D Maynard
- Oxford University Hospitals NHS Trust, Oxford University, Oxford, UK
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Kretzmer T, Bajor L, Silva MA, Eapen B, McKenzie-Hartmann T, Garcia A, Belanger H, Richardson R. 0620 Characteristics Distinguishing Special Operational Forces (SOF) Personnel from Non-SOF Peers with TBI: Retrospective Analysis From the VA TBI Model Systems. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Special Operations Forces (SOF) is an umbrella term which encompasses over a dozen specialized communities across all military branches. Little is known about potential differences in demographic and health characteristics, including sleep, between SOF vs. non-SOF service members. We leveraged existing longitudinal studies of those with history of TBI to examine differences between SOF and non-SOF in the dataset.
Methods
We conducted a retrospective analysis of data from the VA TBI Model Systems, a multi-center longitudinal study of outcomes following TBI rehabilitation. Participants were included if SOF status was known (N = 261). Differences between groups on variables of interest were then classified as “Immaterial”, “Minor,” and “Important” based on either prevalence (categorical data) or degree of difference (continuous data).
Results
Of included participants, 68 (26%) were identified as SOF and 193 (74%) as non-SOF. SOF were more highly educated and more likely to have history of mild TBI. There were multiple “important” differences in co-morbidity prevalence. SOF participants were more likely to be diagnosed with sleep apnea (36% SOF vs 12% non-SOF). They were also more likely to have been diagnosed with chronic pain, a cardiac condition, high blood cholesterol, and/or osteoarthritis.
Conclusion
SOF participants differed from non-SOF in a multiple important ways, suggesting this is a different and medically complex population. The most striking finding was that SOF personnel had a significantly greater rate of sleep apnea, relative to non-SOF. The mechanism underlying this difference is not known but may relate to training, blast exposure, weapons use, and mission demands. Further investigation regarding mechanisms, prevalence, and treatment of OSA in the SOF community is needed.
Support
This research was sponsored by VHA Central Office VA TBI Model Systems Program of Research; Subcontract from General Dynamics Information Technology (W91YTZ-13-C-0015; HT0014-19-C-0004).
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Affiliation(s)
- T Kretzmer
- Mental Health and Behavioral Sciences Section (MHBSS), James A. Haley Veterans’ Hospital, Tampa, FL
| | - L Bajor
- Mental Health and Behavioral Sciences Section (MHBSS), James A. Haley Veterans’ Hospital, Tampa, FL
| | - M A Silva
- Mental Health and Behavioral Sciences Section (MHBSS), James A. Haley Veterans’ Hospital, Tampa, FL
| | - B Eapen
- 7 Physical Medicine and Rehabilitation Section, South Texas Veterans Health Care System, San Antonio, TX
| | - T McKenzie-Hartmann
- Defense and Veterans Brain Injury Center, James A. Haley Veterans’ Hospital, Tampa, FL
| | - A Garcia
- Defense and Veterans Brain Injury Center, James A. Haley Veterans’ Hospital, Tampa, FL
| | - H Belanger
- Defense and Veterans Brain Injury Center (DVBIC), United States Special Operations Command MacDill AFB, Tampa, FL
| | - R Richardson
- Mental Health and Behavioral Sciences Section (MHBSS), James A. Haley Veterans’ Hospital, Tampa, FL
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Silva MA, Brennan EM, Noyes E, Royer A, Nakase-Richardson R. 0729 Sleep Apnea Diagnosis And Severity And Their Impact On Cognition After TBI: A VA TBI Model Systems Study. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
For persons with moderate-to-severe traumatic brain injury (TBI), chronic cognitive impairment contributes to long term disability. Health comorbidities may contribute to the neurologic burden in TBI. Indeed, obstructive sleep apnea (OSA) is associated with neuropathological and cognitive changes. The objective of this study was to examine the relationship between OSA and cognition after TBI.
Methods
Participants were prior inpatient rehabilitation patients drawn from the Tampa VA TBI Model Systems longitudinal study. Post-discharge interviews occurred 2 to 6 years post-TBI. Participants reported whether they were diagnosed with OSA and completed the Brief Test of Adult Cognition by Telephone (BTACT) which measures recall, working memory, processing speed, fluency, and reasoning. Participants with polysomnography (PSG) were separately analyzed to examine the impact of sleep apnea severity (i.e., Apnea-Hypopnea Index [AHI]) on cognition.
Results
Participants (N=104) were mostly male (95.2%), age M=37.7 (SD=12.5), Education M=13.6 years (SD=2.1), and 45.2% were diagnosed with OSA. Participants with and without OSA did not differ by age, education, gender, or time since injury at time of BTACT (ps > .05). ANCOVAs were conducted examining OSA diagnosis on BTACT subscale scores, covarying TBI severity level, but results did not reach statistical significance (ps > .05). A subset of participants with OSA had PSG (n=27), AHI score quartiles = 6.7/10.4/21.6. Higher AHI was associated with poorer reasoning (Spearman ρ = -0.45, p = .019). Nonsignificant results were found for word recall (Spearman ρ = -0.35, p = .074) and processing speed (Spearman ρ = -0.36, p = .069).
Conclusion
Severity of sleep apnea may influence aspects of cognition among persons with TBI, although these results are preliminary and need replication with a larger and more representative sample.
Support
This work was supported by the Veterans Health Administration Central Office VA TBI Model Systems Program of Research and subcontract from General Dynamics Information Technology [W91YTZ-13-C-0015, HT0014-19-C-0004] from the Defense and Veterans Brain Injury Center (DVBIC); and from the United States Department of Veterans Affairs [W81XWH-13-2-0095]; and from the United States Department of Defense Congressionally Directed Medical Research Programs; and from the Patient Centered Outcomes Research Institute (PCORI) [CER-1511-33005].
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Affiliation(s)
- M A Silva
- James A Haley Veterans’ Hospital, MHBSS, Tampa, FL
| | - E M Brennan
- James A Haley Veterans’ Hospital, Research Service, Tampa, FL
| | - E Noyes
- James A Haley Veterans’ Hospital, Research Service, Tampa, FL
| | - A Royer
- James A Haley Veterans’ Hospital, Research Service, Tampa, FL
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Lucini T, Panizzi AR, Silva MA, Marsaro AL. Performance and Preference of Chinavia erythrocnemis (Berg) (Heteroptera: Pentatomidae) on Reproductive Structures of Cultivated Plants. Neotrop Entomol 2020; 49:163-170. [PMID: 31811516 DOI: 10.1007/s13744-019-00740-2] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 11/07/2019] [Indexed: 06/10/2023]
Abstract
Laboratory studies with the stink bug Chinavia erythrocnemis (Berg) (Hemiptera: Pentatomidae) were conducted to evaluate the effect of reproductive structures of cultivated plants, on nymph and adult performance, and adult preference. Results indicated that nymphs were able to complete the development on all plants evaluated. Nymph developmental time was significantly shorter on immature soybean pod [Glycine max (L.) Merrill], compared with immature green bean pod (Phaseolus vulgaris L.), immature siliques of canola (Brassica napus L. var. oleifera), and immature ear heads of wheat (Triticum aestivum L.). Nymph survivorship was superior on soybean (60%), decreasing on the remaining food sources (< 38%). Fresh body weight of females and males at adult emergence was higher on green bean and on soybean, compared with wheat and canola. Survivorship of adults after 40 days was highest on soybean (80%) and on green bean (65%), and lowest on canola (25%). Females of C. erythrocnemis reproduced on all food sources tested, except on canola, on which no female laid eggs. The fecundity and longevity of adults were significantly higher on green bean and on soybean compared with wheat and canola. In general, adults gained weight over time when fed on green bean (18%), followed by soybean (3.4%). On wheat and on canola, the bugs lost weight over time (- 14.9% and - 27.4%, respectively). In general, soybean pod was preferred compared with green bean, canola, and wheat; green bean was preferred over wheat and canola; and canola was preferred to wheat.
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Affiliation(s)
- T Lucini
- Depto de Zoologia, Univ Federal do Paraná, Curitiba, Brasil
| | - A R Panizzi
- Embrapa Trigo, BR 285 Km 294, Caixa Postal 3081, Passo Fundo, RS, 99050-970, Brasil.
| | - M A Silva
- Faculdade de Agronomia, Univ de Passo Fundo, Passo Fundo, RS, Brasil
| | - A L Marsaro
- Embrapa Trigo, BR 285 Km 294, Caixa Postal 3081, Passo Fundo, RS, 99050-970, Brasil
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Silva MA, Bezerra-Silva GCD, Vilanova ES, Cunha MG, Santos MGS. Establishment Probability of Anastrepha grandis and Zeugodacus cucurbitae (Diptera: Tephritidae) in Brazilian Semiarid Based on Thermal Requirements. Neotrop Entomol 2019; 48:853-862. [PMID: 31218548 DOI: 10.1007/s13744-019-00701-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 01/23/2019] [Accepted: 05/23/2019] [Indexed: 06/09/2023]
Abstract
The quarantine pests, Anastrepha grandis (Macquart) and Zeugodacus cucurbitae (Coquillett), are economically important for the fruit fly-free area in Brazilian semiarid, an area in which they are not yet present. Therefore, the objective of this study was to assess the probability of establishment of A. grandis and Z. cucurbitae based on the estimate number of generations in different climatic regions of the Brazilian semiarid. For scenarios of future projections, it was estimated the number of generations with increase of 1°C (low radiative forcing scenario) and 4°C (high radiative forcing scenario) in the air temperature. Finally, we also estimate the quarantine period to eliminate the invading population of cucurbit fruit flies in Brazilian semiarid. For this, the average historical air temperature of 32 semiarid municipalities was used and the biology data of fruit flies (thermal threshold of development and thermal constant) were used. The fruit flies are able to present several generations per year in Brazilian semiarid. Anastrepha grandis can present from 7.99 (Sergipe) to 9.66 (Piauí) generations. The melon fly Z. cucurbitae may present from 31.25 (Sergipe) to 40.66 (Piauí) generations. The estimation of species multiplication is accentuated in any season, with greater amplitude in spring and summer. The municipalities of Piauí, Ceará, and Rio Grande do Norte presented the highest estimates of fruit fly generations. The increase of air temperature in a future scenario may favor the quarantine pests, A. grandis and Z. cucurbitae, in Brazilian semiarid. In conclusion, the species A. grandis and Z. cucurbitae can be established in Brazilian semiarid, with particular concern for the fruit fly-free area.
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Affiliation(s)
- M A Silva
- Entomology Laboratory, Piaui State University, Parnaíba, PI, Brasil
| | | | - E S Vilanova
- "Luiz de Queiroz" College of Agriculture, Dept of Entomology and Acarology, University of São Paulo, Piracicaba, SP, Brasil
| | - M G Cunha
- Entomology Laboratory, Piaui State University, Parnaíba, PI, Brasil
| | - M G S Santos
- Entomology Laboratory, Piaui State University, Parnaíba, PI, Brasil
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Lacerda SMSN, Martinez ERM, Mura ILDD, Doretto LB, Costa GMJ, Silva MA, Digmayer M, Nóbrega RH, França LR. Duration of spermatogenesis and identification of spermatogonial stem cell markers in a Neotropical catfish, Jundiá (Rhamdia quelen). Gen Comp Endocrinol 2019; 273:249-259. [PMID: 30391241 DOI: 10.1016/j.ygcen.2018.10.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 10/23/2018] [Accepted: 10/26/2018] [Indexed: 12/24/2022]
Abstract
Spermatogenesis is a process driven by stem cell, where germ cell cycle is under the control of a specific genotype species. Considering that Jundiá (Rhamdia quelen) is a Neotropical catfish with great economical importance and useful experimental model, little information is available on basic aspects of its reproductive biology, especially on spermatogenesis. As a result, this study aimed to characterize the male germ cells, estimate the duration of spermatogenesis and evaluate the expression of selected stem cell genes in Jundiá testis. Similar to other fish species, our results showed a remarkable decrease of germ cell nuclear volume during Jundiá spermatogenesis, particularly from type A undifferentiated to late type B spermatogonia and from diplotene to late spermatids. Using a S-phase marker, bromodeoxyuridine (BrdU), the combined duration of meiotic and spermiogenic phases in this species was estimated in approximately 7 days. This is considered very short when compared to mammals, where spermatogenesis last from 30 to 74 days. Selected stem cell genes were partially sequenced and characterized in Jundiá testis. Expression analysis showed higher plzf and pou5f3 mRNA levels in the cell fractions enriched by type A undifferentiated spermatogonia. These results were further confirmed by in situ hybridization that showed strong signal of plzf and pou5f3 mRNA in type A undifferentiated spermatogonia. Altogether, these information will expand our knowledge of the reproductive biology of this species, contributing to improve its production and management, and also for biotechnological applications, such as germ cell transplantation.
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Affiliation(s)
- S M S N Lacerda
- Laboratory of Cellular Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - E R M Martinez
- Reproductive and Molecular Biology Group, Department of Morphology, Institute of Bioscience of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - I L D D Mura
- Reproductive and Molecular Biology Group, Department of Morphology, Institute of Bioscience of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - L B Doretto
- Reproductive and Molecular Biology Group, Department of Morphology, Institute of Bioscience of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - G M J Costa
- Laboratory of Cellular Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - M A Silva
- Laboratory of Cellular Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - M Digmayer
- Reproductive and Molecular Biology Group, Department of Morphology, Institute of Bioscience of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - R H Nóbrega
- Reproductive and Molecular Biology Group, Department of Morphology, Institute of Bioscience of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil.
| | - L R França
- Laboratory of Cellular Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; National Institute for Amazonian Research, Manaus, AM, Brazil.
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Tarôco G, Gaya LG, Mota LFM, Souza KAR, Lima HJD, Silva MA. Heritability and genotype-environment interactions for growth curve parameters in meat-type quail fed different threonine:lysine ratios from hatching to 21 d of age. Poult Sci 2019; 98:69-73. [PMID: 30169858 DOI: 10.3382/ps/pey381] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 08/06/2018] [Indexed: 11/20/2022] Open
Abstract
The aim of the present study was to estimate heritabilities and evaluate the existence of genotype-environment interactions for growth curve parameters in quail fed diets containing different threonine:lysine ratios. A total of 4,441 body weight information from two genetic quail groups (LF1 and LF2) fed diets containing 0.66%, 0.71%, 0.76%, 0.81%, and 0.86% threonine:lysine ratios from hatching to 21 d of age were evaluated. From 22 to 35 d of age, quail received a single diet. The Gompertz model was used to estimate growth curve parameters. Genetic analyses were performed using random regression models, by Legendre polynomials of the second kind, considering homogeneity of residual variances. The following characteristics were evaluated: asymptotic weight, asymptotic growth rate, and inflection point. Increases in threonine:lysine ratios promoted higher heritability estimates for these variables in the LF1 genetic group compared to LF2, which indicates that the additive genetic variation was modified due to the environmental variation influenced by the evaluated amino acid ratios, with differences between both genetic groups. Thus, it is recommended that quail be selected in the 0.86% ratio in genetic group LF1 and 0.66% in genetic group LF2, where greater heritabilities were observed. Dispersion of individual breeding values along the environmental gradient was observed for all evaluated characteristics, in both genetic groups, suggesting the existence of genotype-environment interactions for these variables. The evaluated amino acid ratios should be considered in quail breeding programs, since breeding value predictions for a determined threonine:lysine ratio are not valid for other ratios.
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Affiliation(s)
- G Tarôco
- Department of Animal Science, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina MG 39100-000, Brazil
| | - L G Gaya
- Department of Animal Science, Federal University of São João del-Rei, UFSJ, São João del-Rei MG 36301-360, Brazil
| | - L F M Mota
- School of Agricultural and Veterinary Sciences, Sao Paulo State University (UNESP), Jaboticabal 14884-900, SP, Brazil
| | - K A R Souza
- Department of Animal Science, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina MG 39100-000, Brazil
| | - H J D Lima
- Department of Animal Science, Federal University of Mato Grosso, Cuiabá MT 78060-900, Brazil
| | - M A Silva
- Department of Animal Science, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina MG 39100-000, Brazil
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Chaim-Avancini TM, Doshi J, Zanetti MV, Erus G, Silva MA, Duran FLS, Cavallet M, Serpa MH, Caetano SC, Louza MR, Davatzikos C, Busatto GF. Neurobiological support to the diagnosis of ADHD in stimulant-naïve adults: pattern recognition analyses of MRI data. Acta Psychiatr Scand 2017; 136:623-636. [PMID: 29080396 DOI: 10.1111/acps.12824] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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] [Accepted: 09/28/2017] [Indexed: 02/01/2023]
Abstract
OBJECTIVE In adulthood, the diagnosis of attention-deficit/hyperactivity disorder (ADHD) has been subject of recent controversy. We searched for a neuroanatomical signature associated with ADHD spectrum symptoms in adults by applying, for the first time, machine learning-based pattern classification methods to structural MRI and diffusion tensor imaging (DTI) data obtained from stimulant-naïve adults with childhood-onset ADHD and healthy controls (HC). METHOD Sixty-seven ADHD patients and 66 HC underwent high-resolution T1-weighted and DTI acquisitions. A support vector machine (SVM) classifier with a non-linear kernel was applied on multimodal image features extracted on regions of interest placed across the whole brain. RESULTS The discrimination between a mixed-gender ADHD subgroup and individually matched HC (n = 58 each) yielded area-under-the-curve (AUC) and diagnostic accuracy (DA) values of up to 0.71% and 66% (P = 0.003) respectively. AUC and DA values increased to 0.74% and 74% (P = 0.0001) when analyses were restricted to males (52 ADHD vs. 44 HC). CONCLUSION Although not at the level of clinically definitive DA, the neuroanatomical signature identified herein may provide additional, objective information that could influence treatment decisions in adults with ADHD spectrum symptoms.
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Affiliation(s)
- T M Chaim-Avancini
- Laboratory of Psychiatric Neuroimaging (LIM-21), Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, Sao Paulo, Brazil
- Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of São Paulo, Sao Paulo, Brazil
| | - J Doshi
- Section of Biomedical Image Analysis, Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA
| | - M V Zanetti
- Laboratory of Psychiatric Neuroimaging (LIM-21), Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, Sao Paulo, Brazil
- Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of São Paulo, Sao Paulo, Brazil
| | - G Erus
- Section of Biomedical Image Analysis, Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA
| | - M A Silva
- Program for Attention Deficit Hyperactivity Disorder (PRODATH), Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, Sao Paulo, Brazil
| | - F L S Duran
- Laboratory of Psychiatric Neuroimaging (LIM-21), Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, Sao Paulo, Brazil
- Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of São Paulo, Sao Paulo, Brazil
| | - M Cavallet
- Laboratory of Psychiatric Neuroimaging (LIM-21), Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, Sao Paulo, Brazil
- Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of São Paulo, Sao Paulo, Brazil
| | - M H Serpa
- Laboratory of Psychiatric Neuroimaging (LIM-21), Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, Sao Paulo, Brazil
- Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of São Paulo, Sao Paulo, Brazil
| | - S C Caetano
- Department of Psychiatry, Child and Adolescent Psychiatry Unit (UPIA), Universidade Federal de São Paulo, São Paulo, Brazil
| | - M R Louza
- Program for Attention Deficit Hyperactivity Disorder (PRODATH), Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, Sao Paulo, Brazil
| | - C Davatzikos
- Section of Biomedical Image Analysis, Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA
| | - G F Busatto
- Laboratory of Psychiatric Neuroimaging (LIM-21), Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, Sao Paulo, Brazil
- Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of São Paulo, Sao Paulo, Brazil
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Silva MA, Nakase-Richardson R, Smith NW, Schwartz DJ, Anderson W, Calero K. 0611 SLEEP STAGES, TOTAL SLEEP TIME, AND AROUSALS IN ACQUIRED BRAIN INJURY REHABILITATION PATIENTS WITH AND WITHOUT SLEEP APNEA. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.610] [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: 11/14/2022] Open
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17
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Miranda JA, Pires AV, Abreu LRA, Mota LFM, Silva MA, Bonafé CM, Lima HJD, Martins PGMA. Sensitivity of breeding values for carcass traits of meat-type quail to changes in dietary (methionine + cystine):lysine ratio using reaction norm models. J Anim Breed Genet 2016; 133:463-475. [PMID: 27501367 DOI: 10.1111/jbg.12224] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 12/22/2015] [Accepted: 05/14/2016] [Indexed: 11/30/2022]
Abstract
Our objective was to evaluate changes in breeding values for carcass traits of two meat-type quail (Coturnix coturnix) strains (LF1 and LF2) to changes in the dietary (methionine + cystine):lysine ([Met + Cys]:Lys) ratio due to genotype by environment (G × E) interaction via reaction norm. A total of 7000 records of carcass weight and yield were used for analyses. During the initial phase (from hatching to day 21), five diets with increasing (Met + Cys):Lys ratios (0.61, 0.66, 0.71, 0.76 and 0.81), containing 26.1% crude protein and 2900 kcal ME/kg, were evaluated. Analyses were performed using random regression models that included linear functions of sex (fixed effect) and breeding value (random effect) for carcass weight and yield, without and with heterogeneous residual variance adjustment. Both fixed and random effects were modelled using Legendre polynomials of second order. Genetic variance and heritability estimates were affected by both (Met + Cys):Lys ratio and strain. We observed that a G × E interaction was present, with changes in the breeding value ranking. Therefore, genetic evaluation for carcass traits should be performed under the same (Met + Cys):Lys ratio in which quails are raised.
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Affiliation(s)
- J A Miranda
- Department of Animal Sciences, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina, MG, 39100-000, Brazil
| | - A V Pires
- Department of Animal Sciences, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina, MG, 39100-000, Brazil
| | - L R A Abreu
- Department of Animal Sciences, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina, MG, 39100-000, Brazil
| | - L F M Mota
- Department of Animal Sciences, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina, MG, 39100-000, Brazil
| | - M A Silva
- Department of Animal Sciences, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina, MG, 39100-000, Brazil
| | - C M Bonafé
- Department of Animal Sciences, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina, MG, 39100-000, Brazil
| | - H J D Lima
- Department of Animal Sciences, Federal University of Mato Grosso, Cuiabá, MT, 78060-900, Brazil
| | - P G M A Martins
- Department of Animal Sciences, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina, MG, 39100-000, Brazil
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18
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Silva MA, Costa GMJ, Lacerda SMSN, Brandão-Dias PFP, Kalapothakis E, Silva Júnior AF, Alvarenga ER, França LR. Successful xenogeneic germ cell transplantation from Jundia catfish (Rhamdia quelen) into adult Nile tilapia (Oreochromis niloticus) testes. Gen Comp Endocrinol 2016; 230-231:48-56. [PMID: 26972155 DOI: 10.1016/j.ygcen.2016.03.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [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: 07/21/2015] [Revised: 03/08/2016] [Accepted: 03/09/2016] [Indexed: 01/15/2023]
Abstract
Fish germ cell transplantation presents several important potential applications for aquaculture, including the preservation of germplasm from endangered fish species with high genetic and commercial values. Using this technique in studies developed in our laboratory with adult male Nile tilapias (Oreochromis niloticus), all the necessary procedures were successfully established, allowing the production of functional sperm and healthy progeny approximately 2months after allogeneic transplantation. In the present study, we evaluated the viability of the adult Nile tilapia testis to generate sperm after xenogeneic transplant of germ cells from sexually mature Jundia catfish (Rhamdia quelen) that belong to a different taxonomic order. Therefore, in order to investigate at different time-periods post-transplantation, the presence and development of donor PKH26 labeled catfish germ cells were followed in the tilapia seminiferous tubules. From 7 to 20days post-transplantation, only PKH26 labeled spermatogonia were observed, whereas spermatocytes at different stages of development were found at 70days. Germ cell transplantation success and progression of spermatogenesis were indicated by the presence of labeled PKH26 spermatids and sperm on days 90 and 120 post-transplantation, respectively. Confirming the presence of the catfish genetic material in the tilapia testis, all recipient tilapias evaluated (n=8) showed the genetic markers evaluated. Therefore, we demonstrated for the first time that the adult Nile tilapia testis offers the functional conditions for development of spermatogenesis with sperm production from a fish species belonging to a different order, which provides an important new venue for aquaculture advancement.
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Affiliation(s)
- M A Silva
- Laboratory of Cellular Biology (Dept. of Morphology), Federal University of Minas Gerais, MG 31270-901, Brazil
| | - G M J Costa
- Laboratory of Cellular Biology (Dept. of Morphology), Federal University of Minas Gerais, MG 31270-901, Brazil
| | - S M S N Lacerda
- Laboratory of Cellular Biology (Dept. of Morphology), Federal University of Minas Gerais, MG 31270-901, Brazil
| | - P F P Brandão-Dias
- Laboratory of Biotechnology and Molecular Markers (Dept. of General Biology), Federal University of Minas Gerais, MG 31270-901, Brazil
| | - E Kalapothakis
- Laboratory of Biotechnology and Molecular Markers (Dept. of General Biology), Federal University of Minas Gerais, MG 31270-901, Brazil
| | - A F Silva Júnior
- Laboratory of Aquaculture (Veterinary School), Federal University of Minas Gerais, MG 31270-901, Brazil
| | - E R Alvarenga
- Laboratory of Aquaculture (Veterinary School), Federal University of Minas Gerais, MG 31270-901, Brazil
| | - L R França
- Laboratory of Cellular Biology (Dept. of Morphology), Federal University of Minas Gerais, MG 31270-901, Brazil; National Institute for Amazonian Research, Manaus, AM 69067-375, Brazil.
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Magalhães LP, Figueiredo MJO, Cintra FD, Saad EB, Kuniyoshi RR, Teixeira RA, Lorga Filho AM, D’Avila A, de Paola AAV, Kalil CA, Moreira DAR, Sobral Filho DC, Sternick EB, Darrieux FCC, Fenelon G, Lima GG, Atié J, Mateos JCP, Moreira JM, Vasconcelos JTM, Zimerman LI, Silva LRL, Silva MA, Scanavacca MI, Souza OF. II Diretrizes Brasileiras de Fibrilação Atrial. Arq Bras Cardiol 2016. [DOI: 10.5935/abc.20160055] [Citation(s) in RCA: 18] [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] [Indexed: 11/20/2022] Open
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20
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Jerdy H, Ribeiro RB, Silva MA, Medina RM, Werneck MR, Carvalho ECQ. Spirorchiid Infection in Olive Ridley Turtle, Lepidochelys olivacea (Eschscholtz, 1829) (Testudines: Cheloniidae), from Brazil. J Parasitol 2015; 102:290-2. [PMID: 26653792 DOI: 10.1645/15-801] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The Olive Ridley turtle, Lepidochelys olivacea (Eschscholtz, 1829) (Testudines: Cheloniidae), is 1 of the 5 species of sea turtle found along the coast of Brazil. Little is known regarding infection by species of the family Spirorchiidae in the host, as only 1 report exists. This case report describes granulomas in different tissues associated to type 1 and 3 spirorchiid eggs in 5 L. olivacea from the Brazilian coast. The occurrence of the eggs was considered an incidental finding and may have contributed to the debility and death of the hosts. This is the second report of tissue lesions due to spirorchids eggs in this host and the first occurrence in Olive Ridley turtle from the Brazilian coast.
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Affiliation(s)
- H Jerdy
- Universidade Estadual do Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes, Rio de Janeiro, 28013-602, Brazil
| | - R B Ribeiro
- Universidade Estadual do Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes, Rio de Janeiro, 28013-602, Brazil
| | | | | | - M R Werneck
- Universidade Estadual do Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes, Rio de Janeiro, 28013-602, Brazil
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Silva MA, Bezerra-Silva GCD, Vendramim JD, Forim MR, Sá ICG. Threshold Concentration of Limonoids (Azamax) for Preventing Infestation by Mediterranean Fruit Fly (Diptera: Tephritidae). J Econ Entomol 2015; 108:629-639. [PMID: 26470174 DOI: 10.1093/jee/tou056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Accepted: 12/04/2014] [Indexed: 06/05/2023]
Abstract
This study identified the threshold concentration of limonoids for the complete inhibition of oviposition of Ceratitis capitata (Wiedemann) in grapes 'Itália.' Choice and no-choice experiments with the insect were performed. The three no-choice bioassays were conducted following a completely randomized design with 18 treatments (three densities of insects [one, two, or three females]×five concentrations of limonoids and control) and 20 replicates. In a free choice bioassay, two fruits per cage (a treatment grape and a control) were provided for ovipositing. Three densities of insects (one, two, or three females) were used, with 15 replicates. Bioassays were conducted at 25±2°C, 60±10% relative humidity, and a photoperiod of 14:10 (L:D) h. The inhibition of oviposition of C. capitata was concentration dependent, with infestation occurring at lower concentrations of azadirachtin (+3-tigloylazadirachtol) and complete inhibition occurring at concentrations at or exceeding 100 ppm azadirachtin (+28.5 ppm of 3-tigloylazadirachtol), maintaining protective effects even at the most densely populated treatment (three females per fruit). When the pest had a free choice of host grapes (treatment vs. control), severe inhibition was observed at concentrations≥50 ppm azadirachtin (+14.3 ppm of 3-tigloylazadirachtol). We conclude that a threshold concentration of 100 ppm azadirachtin (+28.5 ppm of 3-tigloylazadirachtol) is capable of preventing grape infestation. This concentration is likely to provide a reliable level of protection, as the experimental population density of three females per fruit usually does not occur in the field and wild flies usually have more host options.
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Affiliation(s)
- M A Silva
- Piaui State University, Fruit Fly Research Laboratory, CEP 64860-000, Uruçuí, PI, Brazil. Department of Entomology and Acarology, University of São Paulo, "Luiz de Queiroz" College of Agriculture, CP 9, CEP 13418-900, Piracicaba, SP, Brazil.
| | - G C D Bezerra-Silva
- Piaui State University, Fruit Fly Research Laboratory, CEP 64860-000, Uruçuí, PI, Brazil
| | - J D Vendramim
- Department of Entomology and Acarology, University of São Paulo, "Luiz de Queiroz" College of Agriculture, CP 9, CEP 13418-900, Piracicaba, SP, Brazil
| | - M R Forim
- Department of Chemistry, Federal University of São Carlos, CP 676, 13565-905, São Carlos, SP, Brazil
| | - I C G Sá
- Department of Chemistry, Federal University of São Carlos, CP 676, 13565-905, São Carlos, SP, Brazil
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Prieto R, Silva MA, Waring GT, Gonçalves JMA. Sei whale movements and behaviour in the North Atlantic inferred from satellite telemetry. ENDANGER SPECIES RES 2014. [DOI: 10.3354/esr00630] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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23
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Caires NP, Pinho DB, Souza JSC, Silva MA, Lisboa DO, Pereira OL, Furtado GQ. First Report of Anthracnose on Pepper Fruit Caused by Colletotrichum scovillei in Brazil. Plant Dis 2014; 98:1437. [PMID: 30703977 DOI: 10.1094/pdis-04-14-0426-pdn] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Anthracnose is major disease of pepper (Capsicum annum) in the tropics and causes severe damage both in the field and postharvest. In Brazil, this disease is caused by Colletotrichum acutatum, C. boninense, C. capsici, C. coccodes, and C. gloeosporioides, where the first species is responsible for 70% of all occurrences (3). Recently, C. acutatum has been considered a species complex (1); thus, the aim of this study was to verify the etiology of anthracnose on peppers using a morphological and molecular approaches. In 2011, pepper fruits with typical symptoms of anthracnose (dark, sunken spots with concentric rings of orange conidial masses) were collected in Viçosa, Minas Gerais, Brazil. A single spore isolate was obtained on potato dextrose agar (PDA), and the derived culture was deposited in the Coleção de Culturas de Fungos Fitopatogênicos "Prof. Maria Menezes" (code CMM-4200). The upper side colonies on PDA were gray, cotton-like, and pale gray to pale orange. Conidia were hyaline, aseptate, smooth, straight, cylindrical with round ends or occasionally with end ± acute, 12.5 to 17 μm long and 3.5 to 4 μm wide on synthetic nutrient deficient agar. The isolate was morphologically typical of species belonging to the C. acutatum complex. Molecular identification of the pathogen was carried out and sequences of the regions internal transcribed spacer (ITS), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), and β-tubulin (βt) were obtained and deposited in GenBank (Accession Nos. KJ541821 to KJ541823). A search in the Q-bank fungi database using the ITS, βt, and GAPDH sequences retrieved C. scovillei with 100% identity for all three genes. This pathogen was previously reported in Capsicum spp. only in Thailand, Indonesia, and Japan (1,2). To confirm pathogenicity, drops with 105 spores/ml were deposited in 10 artificially wounded fruits (cv. Itapuã 501 and Melina). In control fruits, drops of sterilized water were deposited onto wounds. The fruits were covered for one day with a transparent plastic bag with moisture supplied by a wet filter paper. The fruits were detached and mature. The bags were removed, and the fruits were incubated for 10 days in a growth chamber at 25°C with a photoperiod of 12 h. After 4 days, gray-brown to black sunken spots with concentric rings were observed on 100% of the wounded fruits that had been inoculated. No disease was observed on the control fruits. The fungus C. scovillei was successfully re-isolated from symptomatic fruits to fulfill Koch's postulates. To our knowledge, this is the first report of anthracnose on pepper fruit caused by C. scovillei in Brazil. Due to the diversity of species that cause anthracnose in Capsicum, future studies using morphological and molecular tools are essential for the correct identification of Colletotrichum spp. on pepper in Brazil. References: (1) U. Damm et al. Stud. Mycol. 73:37, 2012. (2) T. Kanto et al. J. Gen. Plant. Pathol. 80:73, 2014. (3) M. J. Z. Pereira et al. Hortic. Bras. 29:569, 2011.
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Affiliation(s)
- N P Caires
- Departamento de Fitopatologia, Universidade Federal de Viçosa, 36570-900, Minas Gerais, Brazil
| | - D B Pinho
- Departamento de Fitopatologia, Universidade Federal de Viçosa, 36570-900, Minas Gerais, Brazil
| | - J S C Souza
- Departamento de Fitopatologia, Universidade Federal de Viçosa, 36570-900, Minas Gerais, Brazil
| | - M A Silva
- Departamento de Fitopatologia, Universidade Federal de Viçosa, 36570-900, Minas Gerais, Brazil
| | - D O Lisboa
- Departamento de Fitopatologia, Universidade Federal de Viçosa, 36570-900, Minas Gerais, Brazil
| | - O L Pereira
- Departamento de Fitopatologia, Universidade Federal de Viçosa, 36570-900, Minas Gerais, Brazil
| | - G Q Furtado
- Departamento de Fitopatologia, Universidade Federal de Viçosa, 36570-900, Minas Gerais, Brazil
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Lima A, Sardinha VM, Oliveira AF, Reis M, Mota C, Silva MA, Marques F, Cerqueira JJ, Pinto L, Sousa N, Oliveira JF. Astrocyte pathology in the prefrontal cortex impairs the cognitive function of rats. Mol Psychiatry 2014; 19:834-41. [PMID: 24419043 DOI: 10.1038/mp.2013.182] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 11/08/2013] [Accepted: 11/12/2013] [Indexed: 11/09/2022]
Abstract
Interest in astroglial cells is rising due to recent findings supporting dynamic neuron-astrocyte interactions. There is increasing evidence of astrocytic dysfunction in several brain disorders such as depression, schizophrenia or bipolar disorder; importantly these pathologies are characterized by the involvement of the prefrontal cortex and by significant cognitive impairments. Here, to model astrocyte pathology, we injected animals with the astrocyte specific toxin L-α-aminoadipate (L-AA) in the medial prefrontal cortex (mPFC); a behavioral and structural characterization two and six days after the injection was performed. Behavioral data shows that the astrocyte pathology in the mPFC affects the attentional set-shifting, the working memory and the reversal learning functions. Histological analysis of brain sections of the L-AA-injected animals revealed a pronounced loss of astrocytes in the targeted region. Interestingly, analysis of neurons in the lesion sites showed a progressive neuronal loss that was accompanied with dendritic atrophy in the surviving neurons. These results suggest that the L-AA-induced astrocytic loss in the mPFC triggers subsequent neuronal damage leading to cognitive impairment in tasks depending on the integrity of this brain region. These findings are of relevance to better understand the pathophysiological mechanisms underlying disorders that involve astrocytic loss/dysfunction in the PFC.
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Affiliation(s)
- A Lima
- 1] Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal [2] ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - V M Sardinha
- 1] Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal [2] ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - A F Oliveira
- 1] Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal [2] ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - M Reis
- 1] Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal [2] ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - C Mota
- 1] Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal [2] ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - M A Silva
- 1] Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal [2] ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - F Marques
- 1] Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal [2] ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - J J Cerqueira
- 1] Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal [2] ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - L Pinto
- 1] Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal [2] ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - N Sousa
- 1] Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal [2] ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - J F Oliveira
- 1] Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal [2] ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
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Perera MTPR, Richards DA, Silva MA, Ahmed N, Neil DA, Murphy N, Mirza DF. Comparison of energy metabolism in liver grafts from donors after circulatory death and donors after brain death during cold storage and reperfusion. Br J Surg 2014; 101:775-83. [DOI: 10.1002/bjs.9478] [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] [Accepted: 01/28/2014] [Indexed: 12/31/2022]
Abstract
Abstract
Background
Donation after circulatory death (DCD) liver grafts have supplemented the donor organ pool, but certain adverse outcomes have prevented exploration of the full potential of such organs. The aim of this study was to determine key differences in basic energy metabolism between DCD and donation after brainstem death (DBD) grafts.
Methods
Microdialysis samples from DCD and DBD allograft parenchyma from cold storage to 48 h after reperfusion were analysed by colorimetric methods. Interstitial lactate, pyruvate and glycerol levels were measured and the lactate/pyruvate ratio was calculated to estimate energy depletion of the grafts. Histological features of ischaemia and reperfusion injury were assessed.
Results
Donor age, extent of steatosis and cold ischaemia time were comparable between ten DCD and 20 DBD organs. DCD grafts had higher levels of interstitial lactate (median 11·6 versus 1·2 mmol/l; P = 0·015) and increased lactate/pyruvate ratio (792 versus 38; P = 0·001) during cold storage. There was no significant difference in glycerol levels between DCD and DBD grafts (225·1 versus 127·5 µmol/l respectively; P = 0·700). Rapid restoration of energy levels with lactate clearance, increased pyruvate levels and reduced lactate/pyruvate ratio was seen following reperfusion of functioning DCD grafts, parallel with levels in DBD grafts. Histology revealed more pronounced glycogen depletion in DCD grafts. Three allografts that failed owing to primary non-function showed energy exhaustion with severe glycogen depletion.
Conclusion
Liver grafts from DCD donors exhibited depletion of intracellular energy reserves during cold storage. Failed allografts showed severe energy depletion. Modified organ preservation techniques to minimize organ injury related to altered energy metabolism may enable better utilization of donor organs after circulatory death.
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Affiliation(s)
- M T P R Perera
- Liver Unit, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, UK
| | - D A Richards
- Department of Pharmacy, Pharmacology and Therapeutics, School of Clinical and Experimental Medicine, Medical School, University of Birmingham, Edgbaston, Birmingham, UK
| | - M A Silva
- Liver Unit, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, UK
| | - N Ahmed
- Liver Unit, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, UK
| | - D A Neil
- Department of Pathology, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, UK
| | - N Murphy
- Department of Critical Care, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, UK
| | - D F Mirza
- Liver Unit, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, UK
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Perera MT, Silva MA, Murphy N, Briggs D, Mirza DF, Neil DAH. Influence of preformed donor-specific antibodies and C4d on early liver allograft function. Scand J Gastroenterol 2013; 48:1444-51. [PMID: 24131305 DOI: 10.3109/00365521.2013.845795] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
INTRODUCTION. The impact of preformed donor-specific antibodies (DSA) is incompletely understood in liver transplantation. The incidence and impact of preformed DSA on early post liver transplant were assessed and these were correlated with compliment fragment C4d on allograft biopsy. METHODS. Pretransplant serum from 41 consecutive liver transplant recipients (brain dead donors; DBD = 27 and cardiac death donors; DCD = 14) were tested for class-specific anti-human leukocyte antigen (HLA) and compared against donor HLA types. Liver biopsies were taken during cold storage (t-1) and post-reperfusion (t0) stained with C4d and graded for preservation-reperfusion injury (PRI). RESULTS. Of the 41 recipients, 8 (20%) had anti-HLA class I/II antibodies pretransplant, 3 (7%) were confirmed preformed DSA; classes I and II (n=1) and class I only (n=2). No biopsies showed definite evidence of antibody-mediated rejection. Graft biopsies in overall showed only mild PRI with ischemic hepatocyte C4d pattern similar in both positive and negative DSA patients. One DSA-positive (33%) compared with four DSA-negative patients (10%) had significant early graft dysfunction; severe PRI causing graft loss from primary nonfunction was seen only in DSA-negative group. Allograft biopsy of preformed DSA-positive patient demonstrated only minimal PRI; however, no identifiable cause could be attributed to graft dysfunction other than preformed DSA. CONCLUSION. Preformed DSA are present in 5-10% liver transplant recipients. There is no association between anti-HLA DSA and PRI and C4d, but preformed DSA may cause early morbidity. Larger studies on the impact of DSA with optimization of C4d techniques are required.
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Affiliation(s)
- M T Perera
- The Liver Unit, Queen Elizabeth Hosiptal Birmingham , Birmingham, B15 2TH , UK
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Silva MA, Bezerra-Silva GCD, Vendramim JD, Mastrangelo T, Forim MR. Neem derivatives are not effective as toxic bait for tephritid fruit flies. J Econ Entomol 2013; 106:1772-1779. [PMID: 24020292 DOI: 10.1603/ec12071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Neem derivatives have been widely touted as replacements for pesticides. A feasible replacement of synthetic insecticides in the management of fruit flies could be to use neem products in baits. This study evaluated the bioactivity of neem (Azadirachta indica A. Juss) derivatives in bait for adults of Anastrepha fraterculus (Wiedemann) and Ceratitis capitata (Wiedemann). The estimated LCs50 values for A. fraterculus and C. capitata were 7,522 ppm (18.40 ppm of azadirachtin) and 1,368 ppm (3.35 ppm of azadirachtin), respectively, using an aqueous extract of neem seeds in bait after 10 d of experimentation. No significant differences in the mortality of A. fraterculus and C. capitata adults exposed to baits made from different extracts and neem oil were observed after 3 h or 2 or 6 d; differences among the treatments were observed only on the 10th day of the evaluation. We conclude that neem derivatives applied as a bait spray over citrus plants did not demonstrate a toxic effect on A. fraterculus and C. capitata. The reasons for the low efficacy of the neem bait on Tephritid fruit flies are discussed.
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Affiliation(s)
- M A Silva
- Piaui State University, Fruit Fly Research Laboratory, CEP 64860-000 Uruçuí, PI, Brazil.
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Luppi CG, Alencar WK, Silva MA, Chabu SGE, Romera S. P3.297 Surveillance of Syphilis in the State of Sao Paulo, Brazil. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.0752] [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: 11/03/2022]
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Torres DP, Silva MA, Pinho DB, Pereira OL, Furtado GQ. First Report of Curvularia gladioli Causing a Leaf Spot on Gladiolus grandiflorus in Brazil. Plant Dis 2013; 97:847. [PMID: 30722636 DOI: 10.1094/pdis-12-12-1118-pdn] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Gladiolus (Iridaceae) is a popular bulbous plant grown worldwide as an ornamental garden plant or cut flower due to its attractive color, size, and flower shape. In April 2012, leaf spots were observed on plants of Gladiolus grandiflorus varieties T-704 and Amsterdam growing in a production area of cut flowers located in the city of Viçosa, Minas Gerais. The oval to round leaf spots were brown with a dark border surrounded by a halo of yellow tissue. Infected leaf samples were deposited in the herbarium at the Universidade Federal de Viçosa (VIC31897). A fungus was isolated from the leaf spots and a single-spore pure culture was initiated and grown on corn meal carrot agar (CCA) medium in petri dishes incubated at 25°C under a 12-h photoperiod for 4 weeks. A sporulating single-spore culture was deposited at the Coleção de Culturas de fungos fitopatogênicos "Prof. Maria Menezes" (UFRPE, Brazil) code CMM 4055. On CCA medium, the fungal isolate initially appeared white, becoming dark after 14 days. Thirty conidia and conidiophores were measured for identification to species. The septate, smooth to pale brown conidiophores were present singly or in groups. The simple, straight or flexuous conidiophores were 42.5 to 82.5 × 3.5 to 7.5 μm and some had a geniculate growth pattern. The majority of conidia were curved at the third (central) cell from the base, which was usually enlarged compared to the end cells. The cells at each end of the 3-distoseptate conidia were pale brown, the intermediate cell brown or dark brown, and the third (central) cell was often the darkest. The basal cell had a protuberant hilum. Conidia were smooth and 20.0 to 33.5 × 10 to 17.5 μm. These characteristics matched well with the description of Curvularia gladioli (1). To confirm this identification, DNA was extracted using a Wizard Genomic DNA Purification Kit and the internal transcribed spacer region (ITS) of rDNA was amplified using ITS1 and ITS4 primers and the partial 28S rDNA region using primers LR0R and LR5. The sequences were deposited in GenBank as accession nos. JX995106 and JX995107, respectively. The ITS sequence matched sequence AF071337, C. gladioli, with 100% identity. This pathogen was first identified as C. lunata, but based on the characteristic of the hilum, spore size, and pathogenicity testing, the fungus was renamed C. trifolii f. sp. gladioli (3). Due to the explicit curvature of the conidia at the third cell and molecular data, the fungus was reclassified as C. gladioli (1,2). To confirm Koch's postulates, 1-month-old healthy plants of G. grandiflorus var. T-704 and Amsterdam (five plants each) were inoculated with a conidial suspension (2 × 104 conidia mL-1) by spraying the foliage and then placed on a growth chamber at 25°C. The control plants were sprayed with distilled water. Symptoms were consistent with those initially observed and all plants developed leaf spots by 4 days post-inoculation. C. gladioli was consistently recovered from the symptomatic tissue and control plants remained symptomless. To our knowledge, this is the first report of C. gladioli causing leaf spot on G. grandiflorus in Brazil. Due to a lack of chemical fungicides for management of this pathogen, further studies to evaluate the susceptibility of the main varieties of gladiolus grown in Brazil to C. gladioli may be necessary. References: (1) G. H. Boerema and M. E. C. Hamers. Neth. J. Plant Pathol. 95:1, 1989. (2) D. S. Manamgoda et al. Fungal Divers. 56:131, 2012. (3) J. A. Parmelee. Mycologia 48:558, 1956.
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Affiliation(s)
- D P Torres
- Departamento de Fitopatologia, Universidade Federal de Viçosa, Minas Gerais, 36570-000, Brazil
| | - M A Silva
- Departamento de Fitopatologia, Universidade Federal de Viçosa, Minas Gerais, 36570-000, Brazil
| | - D B Pinho
- Departamento de Fitopatologia, Universidade Federal de Viçosa, Minas Gerais, 36570-000, Brazil
| | - O L Pereira
- Departamento de Fitopatologia, Universidade Federal de Viçosa, Minas Gerais, 36570-000, Brazil
| | - G Q Furtado
- Departamento de Fitopatologia, Universidade Federal de Viçosa, Minas Gerais, 36570-000, Brazil
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Barcellos DC, Batista GR, Silva MA, Pleffken PR, Rangel PM, Fernandes VVB, Di Nicoló R, Torres CRG. Two-year Clinical Performance of Self-etching Adhesive Systems in Composite Restorations of Anterior Teeth. Oper Dent 2013; 38:258-66. [DOI: 10.2341/11-397-c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
Objective
The aim of this study was to evaluate the two-year clinical performance of Class III, IV, and V composite restorations using a two-step etch-and-rinse adhesive system (2-ERA) and three one-step self-etching adhesive systems (1-SEAs).
Material and Methods
Two hundred Class III, IV, and V composite restorations were placed into 50 patients. Each patient received four composite restorations (Amaris, Voco), and these restorations were bonded with one of three 1-SEAs (Futurabond M, Voco; Clearfil S3 Bond, Kuraray; and Optibond All-in-One, Kerr) or one 2-ERA (Adper Single Bond 2/3M ESPE). The four adhesive systems were evaluated at baseline and after 24 months using the following criteria: restoration retention, marginal integrity, marginal discoloration, caries occurrence, postoperative sensitivity and preservation of tooth vitality. After two years, 162 restorations were evaluated in 41 patients. Data were analyzed using the χ2 test (p<0.05).
Results
There were no statistically significant differences between the 2-ERA and the 1-SEAs regarding the evaluated parameters (p>0.05).
Conclusion
The 1-SEAs showed good clinical performance at the end of 24 months.
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Affiliation(s)
- DC Barcellos
- Daphne Câmara Barcellos, DDS, MS, PhD Student, São José dos Campos School of Dentistry, UNESP - Univ Estadual Paulista, São José dos Campos, São Paulo, Brazil
| | - GR Batista
- Graziela Ribeiro Batista, DDS, MS, PhD Student, São José dos Campos School of Dentistry, UNESP - Univ Estadual Paulista, São José dos Campos, São Paulo, Brazil
| | - MA Silva
- Melissa Aline Silva, DDS, MS, São José dos Campos School of Dentistry, UNESP - Univ Estadual Paulista, São José dos Campos, São Paulo, Brazil
| | - PR Pleffken
- Patrícia Rondon Pleffken, São José dos Campos Dental School, UNESP - São Paulo State University, Department of Restorative Dentistry, São José dos Campos, São Paulo, Brazil
| | - PM Rangel
- Patricia Maria Rangel, DDS, São José dos Campos School of Dentistry, UNESP - Univ Estadual Paulista, São José dos Campos, São Paulo, Brazil
| | - VVB Fernandes
- Virgílio Vilas Boas Fernandes Jr, São José dos Campos Dental School, UNESP - São Paulo State University, Department of Restorative Dentistry, São José dos Campos, São Paulo, Brazil
| | - R Di Nicoló
- Rebecca Di Nicoló, DDS, MS, PhD, Associate Professor, São José dos Campos School of Dentistry, UNESP - Univ Estadual Paulista, São José dos Campos, São Paulo, Brazil
| | - CRG Torres
- Carlos R G Torres, DDS, PhD, Assistant Professor, São José dos Campos School of Dentistry, UNESP - Univ Estadual Paulista, São José dos Campos, São Paulo, Brazil
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Bramis K, Gordon-Weeks AN, Friend PJ, Bastin E, Burls A, Silva MA, Dennison AR. Systematic review of total pancreatectomy and islet autotransplantation for chronic pancreatitis. Br J Surg 2012; 99:761-6. [PMID: 22434330 DOI: 10.1002/bjs.8713] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/30/2012] [Indexed: 12/23/2022]
Abstract
BACKGROUND Total pancreatectomy and islet autotransplantation (TP/IAT) is a treatment option in a subset of patients with chronic pancreatitis. A systematic review of the literature was performed to evaluate the outcome of this procedure, with an attempt to ascertain when it is indicated. METHODS MEDLINE (1950 to present), Embase (1980 to present) and the Cochrane Library were searched to identify studies of outcomes in patients undergoing TP/IAT. Cohort studies that reported the outcomes following the procedure were included. The MOOSE guidelines were used as a basis for this review. RESULTS Five studies met the inclusion criteria. The techniques reported for pancreatectomy and islet cell isolation varied between studies. TP/IAT was successful in reducing pain in patients with chronic pancreatitis. Comparing morphine requirements before and after the procedure, two studies recorded significant reductions. Concurrent IAT reduced the insulin requirement after TP; the rate of insulin independence ranged from 46 per cent of patients at 5 years' mean follow-up to 10 per cent at 8 years. The impact on quality of life was poorly reported. The studies reviewed did not provide evidence for optimal timing of TP/IAT in relation to the evolution of chronic pancreatitis. CONCLUSION This systematic review showed that TP/IAT had favourable outcomes with regard to pain reduction. Concurrent IAT enabled a significant proportion of patients to remain independent of insulin supplementation.
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Affiliation(s)
- K Bramis
- Department of Hepatobiliary and Transplant Surgery, Churchill Hospital, Oxford Radcliffe Hospitals NHS Trust, Oxford, UK
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Cortez PP, Atayde LM, Silva MA, Armada-da-Silva P, Fernandes MH, Afonso A, Lopes MA, Maurício AC, Santos JD. Characterization and preliminary in vivo evaluation of a novel modified hydroxyapatite produced by extrusion and spheronization techniques. J Biomed Mater Res B Appl Biomater 2011; 99:170-9. [PMID: 21714082 DOI: 10.1002/jbm.b.31884] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 04/21/2011] [Accepted: 04/26/2011] [Indexed: 11/07/2022]
Abstract
A glass-reinforced hydroxyapatite (HA) composite, recently registered as Bonelike®, was developed for bone grafting. This biomaterial is composed of a modified HA matrix with α- and β-tricalcium phosphate secondary phases and ionic species that mimic the chemical composition of human bone. Several in vitro and in vivo studies have confirmed the benefits of these properties. However, these studies were all executed with Bonelike® polygonal granules obtained by crushing. In this study, Bonelike® pellets were produced through a patented process, which required the use of techniques such as extrusion and spheronization. The final product presented a homogeneous size, a 55.1% global porosity and a spherical shape. This spherical shape permitted a better adaptation to the implantation site and improved injectability. Additionally, it also may contribute to formation of macropores as pellets packaging leaves open spaces. After implantation of Bonelike® polygonal granules and Bonelike® pellets in monocortical defects in sheep for 8 and 12 weeks, light microscopy and scanning electron microscopy showed extensive osteointegration simultaneously with bone regeneration for both presentations. Histomorphometric analysis did not reveal statistically significant differences between defects treated with Bonelike® polygonal granules and Bonelike® pellets, which suggests similar in vivo performances.
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Affiliation(s)
- P P Cortez
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências e Tecnologias Agrárias e Agro-Alimentares (ICETA), Universidade do Porto, 4485-661 Vairão, Portugal.
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Silva MA, Peixoto GCX, Sousa PC, Bezerra FSB, Bezerra BRSACDS, Silva AR. Interactions between Straw Size and Thawing Rates on the Cryopreservation of Agouti (Dasyprocta aguti) Epididymal Sperm. Reprod Domest Anim 2011; 47:e4-6. [DOI: 10.1111/j.1439-0531.2011.01817.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Gordon-Weeks AN, Snaith A, Petrinic T, Friend PJ, Burls A, Silva MA. Systematic review of outcome of downstaging hepatocellular cancer before liver transplantation in patients outside the Milan criteria. Br J Surg 2011; 98:1201-8. [PMID: 21618496 DOI: 10.1002/bjs.7561] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/28/2011] [Indexed: 12/12/2022]
Abstract
BACKGROUND The aim of this systematic review was to assess the evidence on tumour downstaging before liver transplantation in patients with hepatocellular carcinoma (HCC) initially staged beyond the Milan criteria. METHODS MEDLINE (from 1952), Embase (from 1980) and the Cochrane Library were searched. The review included cohort studies that reported the outcomes of patients with HCC outside the Milan criteria who underwent downstaging before transplantation. RESULTS Eight studies met the inclusion criteria and included a total of 720 patients who underwent transplantation following downstaging after initial presentation with disease outside the Milan criteria. The rate of successful downstaging varied from 24 to 69 per cent of patients. Reported survival rates ranged from 82 to 100 per cent, 79 to 100 per cent and 54·6 to 94 per cent at 1, 3 and 5 years respectively. These were comparable with results for patients presenting within the Milan criteria. CONCLUSION Successful downstaging of HCC to within the Milan criteria is feasible in a proportion of patients. Absolute and disease-free survival rates in patients transplanted following downstaging are comparable to those in patients within the Milan criteria.
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Affiliation(s)
- A N Gordon-Weeks
- Department of Hepatobiliary and Transplant Surgery, Churchill Hospital, Oxford Radcliffe Hospitals NHS Trust, Oxford, UK
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Perera MTPR, Silva MA, Shah AJ, Hardstaff R, Bramhall SR, Issac J, Buckels JAC, Mirza DF. Risk factors for litigation following major transectional bile duct injury sustained at laparoscopic cholecystectomy. World J Surg 2011; 34:2635-41. [PMID: 20645094 DOI: 10.1007/s00268-010-0725-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND Bile duct injuries after laparoscopic cholecystectomy often cause long-term morbidity, with a number of patients resorting to litigation. The present study aimed to analyze risk factors for litigation and to quantify the subsequent medicolegal burden. METHODS A total of 67/106 patients (26 male) with major laparoscopic cholecystectomy bile duct injuries (LCBDI) and a minimum 2-year follow-up, replied to a questionnaire covering patient perception toward the complication, physical/psychological recovery, and subsequent litigation. These data were collated with prospectively collected data related to the LCBDI and subsequent management, and a multivariate regression model was designed to identify potential risk factors associated with litigation. RESULTS Most patients felt they had been inadequately informed prior to surgery [47/67 (70%)] and after the LCBDI [50/67 (75%)], and a majority remained psychologically traumatized at the time of evaluation [50/67 (75%)]. Of these, 22 patients had started litigation by means of a "letter of demand" (LOD; n = 10) or prosecution (n = 12). Nineteen (19/22%) cases have been closed in favor of the plaintiff. There was no difference between the awards for LOD versus prosecution cases, and average compensation was £40,800 versus £89,875, respectively (p = n.s). On multivariate analysis, age < 52 years (p = 0.03), associated vascular injury (p = 0.014), immediate nonspecialist repair (p = 0.009), and perceived incomplete recovery following LCBDI (p = 0.017) were identified as independent predictors for possible litigation. CONCLUSIONS On the basis of the present study, nearly one third of patients with major transectional LCBDI are likely to resort to litigation. Younger patients and those in whom repair is attempted prior to specialist referral are likely to initiate litigation.
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Affiliation(s)
- M T P R Perera
- The Liver Unit, Queen Elizabeth Hospital, Edgbaston, Birmingham, B15 2TH, UK
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Silva MA, Paes HR, Holanda JNF. Reuse of ornamental rock-cutting waste in aluminous porcelain. J Environ Manage 2011; 92:936-940. [PMID: 21074931 DOI: 10.1016/j.jenvman.2010.10.060] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2010] [Revised: 10/05/2010] [Accepted: 10/24/2010] [Indexed: 05/30/2023]
Abstract
Large amounts of solid wastes are discarded in the ornamental rocks industry. This work investigates the incorporation of ornamental rock-cutting waste as a raw material into an aluminous porcelain body, replacing natural feldspar material by up to 35 wt.%. Formulations containing rock-cutting waste were pressed and sintered at 1350 °C. The porcelain pieces were tested to determine their properties (linear shrinkage, water absorption, apparent density, mechanical strength, and electrical resistivity). Development of the microstructure was followed by scanning electron microscopy (SEM) and X-ray diffraction (XRD) analyses. The results showed that ornamental rock-cutting waste could be used in aluminous porcelains, in the range up to 10 wt.%, as a partial replacement for traditional flux material, resulting in a valid route for management of this abundant waste.
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Affiliation(s)
- M A Silva
- Northern Fluminense State University, Laboratory of Advanced Materials, Group of Ceramic Materials, 28013-602 Campos dos Goytacazes-RJ, Brazil
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Pena HFJ, Marvulo MFV, Horta MC, Silva MA, Silva JCR, Siqueira DB, Lima PACP, Vitaliano SN, Gennari SM. Isolation and genetic characterisation of Toxoplasma gondii from a red-handed howler monkey (Alouatta belzebul), a jaguarundi (Puma yagouaroundi), and a black-eared opossum (Didelphis aurita) from Brazil. Vet Parasitol 2010; 175:377-81. [PMID: 21055880 DOI: 10.1016/j.vetpar.2010.10.015] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 10/01/2010] [Accepted: 10/08/2010] [Indexed: 11/28/2022]
Abstract
Toxoplasma gondii isolates are highly diverse in domestic animals from Brazil. However, little is known about the genetics of this parasite from wild mammals in the same region. Reveal genetic similarity or difference of T. gondii among different animal populations is necessary for us to understand transmission of this parasite. Here we reported isolation and genetic characterisation of three T. gondii isolates from wild animals in Brazil. The parasite was isolated by bioassay in mice from tissues of a young male red handed howler monkey (Alouatta belzebul), an adult male jaguarundi (Puma yagouaroundi), and an adult female black-eared opossum (Didelphis aurita). The monkey and the jaguarundi had inhabited the Zoo of Parque Estadual Dois Irmãos, Pernambuco State, Northeastern Brazil, for 1 year and 8 years, respectively. The wild black-eared opossum was captured in São Paulo State, Southeastern Brazil, and euthanised for this study because it was seropositive for T. gondii (titre 1:100 by the modified agglutination test, MAT). Ten PCR-RFLP (Polymerase Chain Reaction-Restriction Fragment Length Polymorphism) markers, SAG1, SAG2, SAG3, BTUB, GRA6, c22-8, c29-2, L358, PK1 and Apico, were used to genotype the isolates. T. gondii was isolated from the brain and heart homogenate of the monkey, the muscle homogenate of the jaguarundi, and the heart homogenate of the black-eared opossum. This was the first isolation of T. gondii from a neotropical felid from Brazil. The isolate from the monkey (TgRhHmBr1) was not virulent in mice, whereas the isolates from the jaguarundi (TgJagBr1) and the black-eared opossum (TgOpBr1) were virulent in mice. The genotype of the isolate from the monkey has been identified in isolates from a goat and ten chickens in the same region of Brazil, suggesting that it may be a common lineage circulating in this region. The genotypes of the isolates from the jaguarundi and the black-eared opossum have not been previously reported. Although there are already 88 genotypes identified from a variety of animal hosts in Brazil, new genotypes are continuously being identified from different animal species, indicating an extremely high diversity of T. gondii in the population.
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Affiliation(s)
- H F J Pena
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil.
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Silva MA, Gomes PS, Vila M, Lopes MA, Santos JD, Silva RF, Fernandes MH. New titanium and titanium/hydroxyapatite coatings on ultra-high-molecular-weight polyethylene—
in vitro
osteoblastic performance. Biomed Mater 2010; 5:35014. [DOI: 10.1088/1748-6041/5/3/035014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Field M, Blackwell J, Jaipersad A, Wall M, Silva MA, Morgan RH, Pherwani AD. Distal revascularisation with interval ligation (DRIL): an experience. Ann R Coll Surg Engl 2009; 91:394-8. [PMID: 19409151 DOI: 10.1308/003588409x392153] [Citation(s) in RCA: 12] [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] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION The global increase of chronic renal failure has resulted in a growing number of patients on haemodialysis using arteriovenous fistulas (AVFs). By virtue of their very function, AVFs at times shunt blood away from regions distally, resulting in an ischaemic steal syndrome. Distal revascularisation with interval ligation (DRIL) has been described as a procedure to treat symptomatic ischaemic steal. We present our experience in the management of this complication. PATIENTS AND METHODS Six patients with severe ischaemic steal were treated using a DRIL procedure between May 2004 and June 2007. There were three males and three females, all with elbow brachiocephalic AVFs. Symptoms ranged from severe rest pain to digital gangrene. Published results from international studies of 135 DRIL procedures were also reviewed. RESULTS Vascular access was maintained along with the elimination of ischaemic symptoms in the six patients using an ipsilateral reversed basilic vein graft. Interval ligation of the distal brachial artery was performed at the same time. All patients showed immediate and sustained clinical improvement of symptoms with a demonstrable increase in digital pulse oximetry. CONCLUSIONS DRIL is a beneficial treatment option that has proven successful at alleviating ischemic steal symptoms and preserving vascular access. This avoids placement of central lines, its associated risks, and the need to create an alternative sited fistula.
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Affiliation(s)
- M Field
- The Vascular Unit, University Hospital of North Staffordshire NHS Trust, Stoke-on-Trent, UK.
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Silva Marques JM, Gomes PS, Silva MA, Silvério Cabrita AM, Santos JD, Fernandes MH. Growth and phenotypic expression of human endothelial cells cultured on a glass-reinforced hydroxyapatite. J Mater Sci Mater Med 2009; 20:725-731. [PMID: 18987948 DOI: 10.1007/s10856-008-3628-6] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 05/21/2008] [Accepted: 10/16/2008] [Indexed: 05/27/2023]
Abstract
Glass-reinforced hydroxyapatite composites (GR-HA) are bone regenerative materials that are characterized by their increased mechanical properties, when compared to synthetic hydroxyapatite. Bonelike is a GR-HA that is a result of the addition of a CaO-P(2)O(5) based glass to a HA matrix. This biomaterial has been successfully applied in clinical bone regenerative applications. This work aims to evaluate the ability of Bonelike to support the adhesion, proliferation and phenotypic expression of human endothelial cells, aiming to establish new bone tissue engineering pre-endothelialization strategies. Bonelike discs, regardless of being submitted to a pre-immersion treatment with culture medium, were seeded with first passage human umbilical vein endothelial cells, and characterized regarding proliferation and differentiation events. Pre-immersed Bonelike allowed the adhesion, proliferation and phenotype expression of endothelial cells. Seeded materials presented positive immunofluorescent staining for PECAM-1 and a tendency for the formation of cord-like arrangements under angiogenesis-stimulating conditions, although, compared to standard culture plates, a slight decreased cell growth was observed. In this way, Bonelike may be a suitable candidate for pre-endothelialization approaches in bone tissue engineering applications.
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Affiliation(s)
- J M Silva Marques
- Cooperativa de Ensino Superior Egas Moniz, Monte de Caparica, Portugal
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Araújo FG, Silva MA, Azevedo MCC, Santos JNS. Spawning season, recruitment and early life distribution of Anchoa tricolor (Spix and Agassiz, 1829) in a tropical bay in southeastern Brazil. BRAZ J BIOL 2009; 68:823-9. [PMID: 19197501 DOI: 10.1590/s1519-69842008000400018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2006] [Accepted: 11/30/2008] [Indexed: 11/22/2022] Open
Abstract
The pattern of the use of the Sepetiba Bay, a semi-closed 450 km(2) area in southeastern Brazil, by Anchoa tricolor was investigated to assess spawning period, recruitment and to detect spatial-temporal patterns of this major fishery resource. Fishes were sampled by seine nets, from spring, 1998 to winter, 1999 and by beach seine, from spring, 1998 to winter, 2000. Reproductive season, measured in terms of GSI, gonad development and appearance of recruits, indicate that reproduction occurs from August to March, when they reach the best condition. Recruitment peaks in winter/spring at sandy beaches where they stay until late summer, moving toward deeper bay areas during autumn. After that, they join adults and perform movements between the bay and the adjacent continental shelf to reproduce.
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Affiliation(s)
- F G Araújo
- Laboratório de Ecologia de Peixes, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil, 23851-970.
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Carneiro LS, Nunes CA, Silva MA, Leles CR, Mendonça EF. In vivostudy of pixel grey-measurement in digital subtraction radiography for monitoring caries remineralization. Dentomaxillofac Radiol 2009; 38:73-8. [DOI: 10.1259/dmfr/15857365] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Silva MA, Hegab B, Hyde C, Guo B, Buckels JAC, Mirza DF. Needle track seeding following biopsy of liver lesions in the diagnosis of hepatocellular cancer: a systematic review and meta-analysis. Gut 2008; 57:1592-6. [PMID: 18669577 DOI: 10.1136/gut.2008.149062] [Citation(s) in RCA: 342] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
BACKGROUND Needle biopsy of a suspicious liver lesion could guide management in the setting of equivocal imaging and serology, although it is not recommended generally because there is the possibility of tumour dissemination outside the liver. The incidence of needle track seeding following biopsy of a suspicious liver lesion is ill-defined, however. METHODS A systematic review and meta-analysis of observational studies published before March 2007 was performed. Studies that reported on needle tract seeding following biopsy of suspicious liver lesions were identified. Lesions suspected of being hepatocelleular cancer (HCC) were considered. Data on the type of needle biopsy, diagnosis, incidence of needle track seeding duration to seeding, follow-up and impact on outcome were tabulated. RESULTS Eight studies identified by systematic review on biopsy of HCC were included in a meta-analysis. The pooled estimate of a patient with seeding per 100 patients with HCC was 0.027 (95% confidence interval (CI) 0.018 to 0.040). There was no difference whether a fixed or random effects model was used. Q was 4.802 with 7 degrees of freedom, p = 0.684; thus the observed heterogeneity was compatible with variation by chance alone. The pooled estimate of a patient with seeding per 100 patients per year was 0.009 (95% CI 0.006 to 0.013), p = 0.686. CONCLUSIONS In this systematic review we have shown that the incidence of needle tract tumour seeding following biopsy of a HCC is 2.7% overall, or 0.9% per year.
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Affiliation(s)
- M A Silva
- Nuffield House, University Hospital Birmingham NHS Trust-Queen Elizabeth, Edgbaston, Birmingham B152TH, UK
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Silva MA, Coldham C, Mayer AD, Bramhall SR, Buckels JAC, Mirza DF. Specialist outreach service for on-table repair of iatrogenic bile duct injuries--a new kind of 'travelling surgeon'. Ann R Coll Surg Engl 2008; 90:243-6. [PMID: 18430341 DOI: 10.1308/003588408x261663] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
INTRODUCTION The objective of this study was to determine the outcome of on table repair of iatrogenic bile duct injuries (IBDIs) following laparoscopic cholecystectomy, by specialist hepatobiliary surgeons as an outreach service. PATIENTS AND METHODS Prospectively collected data on IBDI managed as an outreach service, was analysed retrospectively. The Strasberg classification was used to define types of injury. RESULTS There were 22 patients. Twenty (91%) had type E 'classical' excision injuries, two had types B and D. Two type E cases had co-existent vascular injury both with right hepatic artery injuries; one also had a co-existent portal vein injury. A Roux-en-Y hepaticojejunostomy was used to repair the IBDI in 21 (95%) patients. One type D injury had duct repair over a T-tube. No attempt was made to reconstruct the injured hepatic arteries, while the portal vein injury was primarily repaired. The median follow-up was 210 days (range, 47-1088 days). Two patients developed bile leak and cholangitis while another developed transient jaundice. There were no postoperative mortalities. All patients were followed up at our centre. CONCLUSIONS Repair of IBDI as an outreach service by specialist surgeons is feasible and safe, with minimal disruption to the patient pathway. Prompt recognition and definitive management may help reduce complaints and medicolegal litigation.
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Affiliation(s)
- M A Silva
- The Liver Unit, Queen Elizabeth Hospital, Birmingham, UK
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Zhang W, Jambulingam PS, Silva MA, Taniere P, Bramhall SR, Mayer AD, Buckels JAC, Mirza DF. Orthotopic liver transplantation for epithelioid haemangioendothelioma. European Journal of Surgical Oncology (EJSO) 2007; 33:898-901. [PMID: 17331694 DOI: 10.1016/j.ejso.2007.01.021] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 12/08/2006] [Accepted: 01/16/2007] [Indexed: 10/23/2022]
Abstract
AIMS To report seven cases of epithelioid haemangioendothelioma (EHE) of the liver, a rare, low-grade malignant neoplasm of vascular origin that have been treated in our institution. MATERIALS AND METHODS Patients with ages ranging from 25 to 60 years presenting mainly with non-specific symptoms, such as right upper quadrant abdominal pain or weight loss. The tumours presented as multiple, nodular lesions involving both lobes of the liver. This type of tumour is often difficult to diagnose, with the final diagnosis being established only by histological examination. The key to diagnosis was the demonstration of cells containing factor VIII-related antigen. RESULTS Five patients underwent orthotopic liver transplantation (OLT), four of whom are alive at a median follow up 38 months (11-88 months). One patient died of recurrent of disease at 88 months. Two patients did not receive an OLT since they presented with extrahepatic metastatic disease; they died at 21 and 25 months from diagnosis. CONCLUSION Orthotopic liver transplantation may be considered as a potentially curative treatment for this rare form of tumour when the disease is confined to the liver.
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Affiliation(s)
- W Zhang
- Department of Liver Surgery, Queen Elizabeth Hospital, University Hospital Birmingham NHS Trust, Birmingham, UK
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Ferreira AA, Kwasniewski FH, Delani TC, Torres MG, Silva MA, Caparroz-Assef SM, Cuman RKN, Bersani-Amado CA. Acute immune and non-immune inflammatory response in spontaneously hypertensive rats and normotensive rats. Role of endogenous nitric oxide. Inflammation 2007; 30:198-204. [PMID: 17665293 DOI: 10.1007/s10753-007-9037-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2007] [Accepted: 06/21/2007] [Indexed: 10/23/2022]
Abstract
UNLABELLED The present study investigated the acute inflammatory response (increase in vascular permeability and leukocytes migration) in the pleura of spontaneously hypertensive rats (SHR) and normotensive rats (NTR), using two different stimulus: carrageenan and active anaphylaxis. In addition, the role of endogenous nitric oxide in these responses was investigated. RESULTS The inflammatory response induced by intrapleural carrageenan injection in SHR developed similarly to that in NTR. Treatment with L-NAME, reduced the intensity of this response in both groups of rats. The inflammatory response induced by active anaphylaxis in SHR and NTR was different. The increase in vascular permeability occurred later in the SHR compared to NTR. The number of leukocyte present in inflammatory exudates was increased at 4 h in both groups of rats. L-NAME treatment did not inhibit exudation at the intervals under analysis, however, reduced the number of mononuclear cells in the inflammatory exudate of SHR. CONCLUSION The development of the inflammatory response in SHR differs from that in NTR, depending on the nature of the inflammatory stimulus. Endogenous NO plays a clear role in carrageenan-induced inflamma-tion, but not in immunologically mediated inflammation in the analyzed period.
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Affiliation(s)
- A A Ferreira
- Laboratory of Inflammation, Department of Pharmacy and Pharmacology, University of Maringá, Maringá, Paraná, Brazil
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Caldeira AMF, Neto AM, Bento AC, Baesso ML, Silva MA, de Almeida A. Behavior of oxidation in the radiochromic gel dosimeter through photoacoustic technique measurements. Appl Radiat Isot 2007; 65:605-9. [PMID: 17349796 DOI: 10.1016/j.apradiso.2007.01.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2006] [Revised: 11/22/2006] [Accepted: 01/10/2007] [Indexed: 10/23/2022]
Abstract
Natural oxidation is an undesirable process suffered by gel dosimetry systems as it changes the values and spatial distribution of absorbed doses. Natural oxidation of Fricke xylenol gel (FXG) dosimeter was inferred from optical absorbance values measured for the first time using the photoacoustic technique. An acoustic detector measures the intensity of the light transmitted by the FXG, which is directly proportional to the ionizing radiation dose absorbed by the samples. In this work, we demonstrated the behavior, the rates, and the dependence of natural oxidation on storage temperature, time, and active components through measurements by photoacoustic technique.
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Affiliation(s)
- A M F Caldeira
- Departamento de Física e Matemática, Universidade de São Paulo, Av Bandeirantes 3900, 1040-91 Ribeirão Preto, SP, Brazil.
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Richards DA, Silva MA, Murphy N, Wigmore SJ, Mirza DF. Extracellular amino acid levels in the human liver during transplantation: a microdialysis study from donor to recipient. Amino Acids 2007; 33:429-37. [PMID: 17235452 DOI: 10.1007/s00726-006-0480-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2006] [Accepted: 11/20/2006] [Indexed: 11/28/2022]
Abstract
Using microdialysis, we have monitored extracellular levels of amino acids and related amines in the human liver at three stages of the transplantation procedure: donor retrieval, back table preparation and during 48 h post-implantation. By comparing the ratio of mean levels at the donor and back table stages, with the ratio between early (2-6 h) and late (43-48 h) post-reperfusion, these amines were classified into one of three groups. In one group, back table levels were markedly higher than during the donor stage, with levels declining over time post-reperfusion. A second group had much lower levels in the back table than during the donor phase, and post-reperfusion levels were either stable or increased over time. Concentrations of amino acids in the final group remained relatively constant at all stages. This study illustrates the value of microdialysis in providing organ-specific metabolic data that may indicate specific mechanisms of poor graft function.
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Affiliation(s)
- D A Richards
- Department of Pharmacology, Medical School, University of Birmingham, Edgbaston, Birmingham, UK.
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Santos FV, Colus IMS, Silva MA, Vilegas W, Varanda EA. Assessment of DNA damage by extracts and fractions of Strychnos pseudoquina, a Brazilian medicinal plant with antiulcerogenic activity. Food Chem Toxicol 2006; 44:1585-9. [PMID: 16730111 DOI: 10.1016/j.fct.2006.03.012] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2006] [Revised: 03/07/2006] [Accepted: 03/29/2006] [Indexed: 10/24/2022]
Abstract
Strychnos pseudoquina St. Hil. is a native plant of the Brazilian Savannah, used in popular medicine to treat a number of conditions. Since it contains large quantities of alkaloids with proven antiulcer activity, we tested the genotoxic potential of crude extracts and fractions containing alkaloids and flavonoids from the leaves of this plant, on Salmonella typhimurium and performed the micronucleus test on peripheral blood cells of mice treated in vivo. The results showed that the methanol extract of the leaves of S. pseudoquina is mutagenic to the TA98 (-S9) and TA100 (+S9, -S9) strains of Salmonella. The dichloromethane extract was not mutagenic to any of the tested strains. Fractions enriched with alkaloids or flavonoids were not mutagenic. In vivo tests were done on the crude methanol extract in albino Swiss mice, which were treated, by gavage, with three different doses of the extract. The highest dose tested (1800 mg/kgb.w.) induced micronuclei after acute treatment, confirming the mutagenic potential of the methanol extract of the leaves of S. pseudoquina. In high doses, constituents of S. pseudoquina compounds act on DNA, causing breaks and giving rise to micronuclei in the blood cells of treated animals.
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Affiliation(s)
- F V Santos
- Department of Biological Sciences, Faculty of Pharmaceutical Sciences of Araraquara, São Paulo State University, UNESP, SP, Brazil
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50
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Catelan SC, Belentani RM, Marques LC, Silva ER, Silva MA, Caparroz-Assef SM, Cuman RKN, Bersani-Amado CA. The role of adrenal corticosteroids in the anti-inflammatory effect of the whole extract of Harpagophytum procumbens in rats. Phytomedicine 2006; 13:446-51. [PMID: 16716916 DOI: 10.1016/j.phymed.2005.06.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2004] [Accepted: 06/27/2005] [Indexed: 05/09/2023]
Abstract
This study was carried out to evaluate whether the anti-inflammatory response in rats to the whole extract of Harpagophytum procumbens is a consequence of adrenal corticosteroid release. Carrageenan-induced inflammatory responses in the hindpaws were evaluated in control, sham-operated and adrenalectomized rats. The extract was administered orally (by gavage) or intraperitoneally, 30min prior to injury stimulus. Blood samples were then collected, and the number of circulating leukocytes was estimated. Pretreatment with the whole extract of H. procumbens reduced the intensity of inflammatory response in normal, sham-operated and adrenalectomized animals. When administered orally, the extract was ineffective. The reduced number of circulating leukocytes observed following intraperitoneal injection of the extract characterized adrenal hyperactivity. The inhibitory effect of the whole extract of H. procumbens on acute inflammatory response in the rat, when administered intraperitoneally, does not depend on the release of adrenal corticosteroids.
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Affiliation(s)
- S C Catelan
- Laboratory of Inflammation, Department of Pharmacy and Pharmacology, University of Maringá - PR, Brazil
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