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Stefanolo JP, Segura V, Grizzuti M, Heredia A, Comino I, Costa AF, Puebla R, Temprano MP, Niveloni SI, de Diego G, Oregui ME, Smecuol EG, de Marzi MC, Verdú EF, Sousa C, Bai JC. Effect of Aspergillus niger prolyl endopeptidase in patients with celiac disease on a long-term gluten-free diet. World J Gastroenterol 2024; 30:1545-1555. [PMID: 38617446 PMCID: PMC11008412 DOI: 10.3748/wjg.v30.i11.1545] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 12/31/2023] [Accepted: 02/18/2024] [Indexed: 03/21/2024] Open
Abstract
BACKGROUND The gluten-free diet (GFD) has limitations, and there is intense research in the development of adjuvant therapies. AIM To examine the effects of orally administered Aspergillus niger prolyl endopeptidase protease (AN-PEP) on inadvertent gluten exposure and symptom prevention in adult celiac disease (CeD) patients following their usual GFD. METHODS This was an exploratory, double-blind, randomized, placebo-controlled trial that enrolled CeD patients on a long-term GFD. After a 4-wk run-in period, patients were randomized to 4 wk of two AN-PEP capsules (GliadinX; AVI Research, LLC, United States) at each of three meals per day or placebo. Outcome endpoints were: (1) Average weekly stool gluten immunogenic peptides (GIP) between the run-in and end of treatments and between AN-PEP and placebo; (2) celiac symptom index (CSI); (3) CeD-specific serology; and (4) quality of life. Stool samples were collected for GIP testing by ELISA every Tuesday and Friday during run-ins and treatments. RESULTS Forty patients were randomized for the intention-to-treat analysis, and three were excluded from the per-protocol assessment. Overall, 628/640 (98.1%) stool samples were collected. GIP was undetectable (< 0.08 μg/g) in 65.6% of samples, and no differences between treatment arms were detected. Only 0.5% of samples had GIP concentrations sufficiently high (> 0.32 μg/g) to potentially cause mucosal damage. Median GIP concentration in the AN-PEP arm was 44.7% lower than in the run-in period. One-third of patients exhibiting GIP > 0.08 μg/g during run-in had lower or undetectable GIP after AN-PEP treatment. Compared with the run- in period, the proportion of symptomatic patients (CSI > 38) in the AN-PEP arm was significantly lower (P < 0.03). AN-PEP did not result in changes in specific serologies. CONCLUSION This exploratory study conducted in a real-life setting revealed high adherence to the GFD. The AN-PEP treatment did not significantly reduce the overall GIP stool concentration. However, given the observation of a significantly lower prevalence of patients with severe symptoms in the AN-PEP arm, further clinical research is warranted.
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Affiliation(s)
- Juan Pablo Stefanolo
- Small Bowel Section, Department of Medicine, Gastroenterology Hospital of Buenos Aires “Dr. C. Bonorino Udaondo”, Buenos Aires 1264, Argentina
| | - Verónica Segura
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville 41080, Spain
| | - Martina Grizzuti
- Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1264, Argentina
| | - Abel Heredia
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville 41080, Spain
| | - Isabel Comino
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville 41080, Spain
| | - Ana Florencia Costa
- Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1264, Argentina
| | - Roberto Puebla
- Small Bowel Section, Department of Medicine, Gastroenterology Hospital of Buenos Aires “Dr. C. Bonorino Udaondo”, Buenos Aires 1264, Argentina
| | - María Paz Temprano
- Small Bowel Section, Department of Medicine, Gastroenterology Hospital of Buenos Aires “Dr. C. Bonorino Udaondo”, Buenos Aires 1264, Argentina
| | - Sonia Isabel Niveloni
- Small Bowel Section, Department of Medicine, Gastroenterology Hospital of Buenos Aires “Dr. C. Bonorino Udaondo”, Buenos Aires 1264, Argentina
| | - Gabriel de Diego
- Basic and Applied Research Group in Immunology and Bioactives (GIBAIB), Institute of Ecology and Sustainable Development (INEDES), National University of Lujan, Luján 6700, Buenos Aires, Argentina
| | - María E Oregui
- Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1264, Argentina
| | - Edgardo Gustavo Smecuol
- Small Bowel Section, Department of Medicine, Gastroenterology Hospital of Buenos Aires “Dr. C. Bonorino Udaondo”, Buenos Aires 1264, Argentina
| | - Mauricio C de Marzi
- Basic and Applied Research Group in Immunology and Bioactives (GIBAIB), Institute of Ecology and Sustainable Development (INEDES), National University of Lujan, Luján 6700, Buenos Aires, Argentina
| | - Elena F Verdú
- Department of Medicine, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton L8S 4L8, Ontario, Canada
| | - Carolina Sousa
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville 41080, Spain
| | - Julio César Bai
- Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1264, Argentina
- Facultad de Medicina, Universidad del Salvador, Buenos Aires C1051ABB, Argentina
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Trindade-Filho EM, Pai JD, Castro DND, Silva ATMD, Costa AF, Vieira JSS, Santos SDBD, Félix VB, Leão SABF, Zambrano LI, Saldanha-Filho AJM, Carvalho EGA, Cavalcante JBN, Quintella GB, Lino ATS, Costa MV, Lima JA, Tavares MMA, de Melo MR, Mousinho KC, Biase CLCLD, Leite ML, Costa PJMS, Becker EL, Moura IMFB, Silva JCD. Dopamine depletion in wistar rats with epilepsy. BRAZ J BIOL 2022; 84:e248411. [PMID: 35544785 DOI: 10.1590/1519-6984.248411] [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: 02/05/2021] [Accepted: 02/20/2022] [Indexed: 11/22/2022] Open
Abstract
The dopamine content in cerebral structures has been related to neuronal excitability and several approaches have been used to study this phenomenon during seizure vulnerability period. In the present work, we describe the effects of dopamine depletion after the administration of 6-hidroxidopamine (6-OHDA) into the substantia nigra pars compacta of male rats submitted to the pilocarpine model of epilepsy. Susceptibility to pilocarpine-induced status epilepticus (SE), as well as spontaneous and recurrent seizures (SRSs) frequency during the chronic period of the model were determined. Since the hippocampus is one of main structures in the development of this experimental model of epilepsy, the dopamine levels in this region were also determined after drug administration. In the first experiment, 62% (15/24) of 6-OHDA pre-treated rats and 45% (11/24) of those receiving ascorbic acid as control solution progressed to motor limbic seizures evolving to SE, after the administration of pilocarpine. Severeness of seizures during the model´s the acute period, was significantly higher in epileptic experimental rats (56.52%), than in controls (4.16%). In the second experiment, the frequency of seizures in the model's chronic phase did not significantly change between groups. Our data show that dopamine may play an important role on seizure severity in the pilo's model acute period, which seems to be due to dopamine inhibitory action on motor expression of seizure.
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Affiliation(s)
- E M Trindade-Filho
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil.,Universidade Estadual de Ciências da Saúde de Alagoas - UNCISAL, Maceió, AL, Brasil
| | - J Dal Pai
- Instituto do Cérebro do Rio Grande do Sul - InsCer, Porto Alegre, RS, Brasil
| | - D N de Castro
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil
| | - A T M da Silva
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil
| | - A F Costa
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil
| | - J S S Vieira
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil
| | | | - V B Félix
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil.,Hospital Universitário de Alagoas Professor Alberto Antunes - HUPAA, Maceió, AL, Brasil
| | - S A B F Leão
- Santa Casa de Misericórdia de Maceió, AL, Brasil.,Universidade Federal de Alagoas - UFAL, Campus de Arapiraca, AL, Brasil
| | - L I Zambrano
- Universidad Nacional Autónoma de Honduras - UNAH, Facultad de Ciencias Medicas, Tegucigalpa, Honduras
| | - A J M Saldanha-Filho
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil.,Centro Universitário Tiradentes - UNIT-AL, Maceió, AL, Brasil
| | - E G A Carvalho
- Centro Universitário Tiradentes - UNIT-PE, Jaboatão dos Guararapes, Pernambuco, PE, Brasil
| | - J B N Cavalcante
- Universidade Estadual de Ciências da Saúde de Alagoas - UNCISAL, Maceió, AL, Brasil
| | - G B Quintella
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil
| | - A T S Lino
- Universidade Federal de Alagoas - UFAL, Campus de Rio Largo, Alagoas, Brasil
| | - M V Costa
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil.,Universidade Estadual de Ciências da Saúde de Alagoas - UNCISAL, Maceió, AL, Brasil
| | - J A Lima
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil.,Universidade Estadual de Ciências da Saúde de Alagoas - UNCISAL, Maceió, AL, Brasil
| | - M M A Tavares
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil
| | - M R de Melo
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil
| | - K C Mousinho
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil.,Universidade Estadual de Ciências da Saúde de Alagoas - UNCISAL, Maceió, AL, Brasil
| | - C L C L De Biase
- Hospital Universitário de Alagoas Professor Alberto Antunes - HUPAA, Maceió, AL, Brasil
| | - M L Leite
- Universidade Estadual de Ciências da Saúde de Alagoas - UNCISAL, Maceió, AL, Brasil
| | - P J M S Costa
- Universidade Estadual de Ciências da Saúde de Alagoas - UNCISAL, Maceió, AL, Brasil
| | - E L Becker
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil
| | - I M F B Moura
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil
| | - J C da Silva
- Centro Universitário - CESMAC, Campus I, Maceió, AL, Brasil.,Universidade Estadual de Ciências da Saúde de Alagoas - UNCISAL, Maceió, AL, Brasil
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Costa AF, Gonçalves KC, Bailão EFLC, Caramori SS, Valadares MC, Gonçalves PJ, Almeida LM. Hancornia speciosa serum latex fraction: a non-allergenic biomaterial. BRAZ J BIOL 2021; 83:e251075. [PMID: 34669807 DOI: 10.1590/1519-6984.251075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 07/01/2021] [Indexed: 11/22/2022] Open
Abstract
Plant-derived products can assist in the healing process of dermal wounds. It has been demonstrated that Hancornia speciosa latex present angiogenic, osteogenic, anti-inflammatory, and antioxidant activities. Then, it could contribute to the wound healing process. However, natural products in contact with skin may cause dermatitis. The objective of this work was to evaluate the allergic and irritant potential of H. speciosa serum fraction latex using in vitro assays. The obtained results showed that the H. speciosa serum fraction latex has a slightly irritant potential and is not cytotoxic neither allergenic for human cells. Moreover, we identified a remarkable low amount of proteins in this material in comparison to Hevea brasiliensis latex. This result could explain the non-allergenic potential of H. speciosa serum fraction latex because proteins present in latex are the main responsible for allergy. This biomaterial could be used as a non-allergenic source for development of new medicines.
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Affiliation(s)
- A F Costa
- Universidade Estadual de Goiás - UEG, Laboratório de Biotecnologia, Campus Henrique Santillo, Anápolis, GO, Brasil
| | - K C Gonçalves
- Universidade Federal de Goiás - UFG, Faculdade de Farmácia, Laboratório de Pesquisa, Desenvolvimento & Inovação de Bioprodutos, Goiânia, GO, Brasil
| | - E F L C Bailão
- Universidade Estadual de Goiás - UEG, Laboratório de Biotecnologia, Campus Henrique Santillo, Anápolis, GO, Brasil
| | - S S Caramori
- Universidade Estadual de Goiás - UEG, Laboratório de Biotecnologia, Campus Henrique Santillo, Anápolis, GO, Brasil
| | - M C Valadares
- Universidade Federal de Goiás - UFG, Faculdade de Farmácia, Laboratório de Pesquisa, Desenvolvimento & Inovação de Bioprodutos, Goiânia, GO, Brasil
| | - P J Gonçalves
- Universidade Federal de Goiás - UFG, Instituto de Física, Goiânia, GO, Brasil
| | - L M Almeida
- Universidade Estadual de Goiás - UEG, Laboratório de Biotecnologia, Campus Henrique Santillo, Anápolis, GO, Brasil
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Rocha SQ, Avelino-Silva VI, Tancredi MV, Jamal LF, Ferreira PRA, Tayra A, Ferreira PM, Carvalhanas T, Domingues CSB, Souza RA, Gianna MC, Kalichman AO, Leite OHM, Souza TNL, Gomes E Costa DA, Furtado JJD, Costa AF. COVID-19 and HIV/AIDS in a cohort study in Sao Paulo, Brazil: outcomes and disparities by race and schooling. AIDS Care 2021; 34:832-838. [PMID: 34082616 DOI: 10.1080/09540121.2021.1936444] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Studies describing characteristics and outcomes of COVID-19 among people living with HIV are currently limited, lacking detailed evaluation of the interplay among demographics, HIV-related variables, and comorbidities on COVID-19 outcomes. This retrospective cohort study describes mortality rates overall and according to demographic characteristics and explores predictors of admission to intensive care unit and death among 255 persons living with HIV with severe acute respiratory syndrome and confirmed SARS-CoV-2 infection in the State of Sao Paulo, Brazil. We found that the overall mortality rate was 4.1/1,000 person-days, with a case-fatality of 34%. Higher rates occurred among older adults, Black/Mixed skin color/race patients, and those with lower schooling. In a multivariable analysis adjusted for age, sex, CD4 count, viral load and number of comorbidities, skin color/race, and schooling remained significantly associated with higher mortality. Although tenofovir use was more frequent among survivors in the univariable analysis, we failed to find a statistically significant association between tenofovir use and survival in the multivariable analysis. Our findings suggest that social vulnerabilities related to both HIV and COVID-19 significantly impact the risk of death, overtaking traditional risk factors such as age, sex, CD4 count, and comorbidities.
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Affiliation(s)
- S Q Rocha
- Centro de Referência e Treinamento DST/Aids - São Paulo (CRT-DST/Aids) Sao Paulo, Brazil
| | - V I Avelino-Silva
- Department of Infectious and Parasitic Diseases, Faculdade de Medicina da Universidade de São Paulo (HC-FMUSP), São Paulo, Brazil
| | - M V Tancredi
- Centro de Referência e Treinamento DST/Aids - São Paulo (CRT-DST/Aids) Sao Paulo, Brazil
| | - L F Jamal
- Centro de Referência e Treinamento DST/Aids - São Paulo (CRT-DST/Aids) Sao Paulo, Brazil
| | - P R A Ferreira
- Disciplina de Infectologia, Escola Paulista de Medicina - Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - A Tayra
- Centro de Referência e Treinamento DST/Aids - São Paulo (CRT-DST/Aids) Sao Paulo, Brazil
| | - P M Ferreira
- Centro de Vigilância Epidemiológica - São Paulo (CVE), São Paulo, Brazil
| | - T Carvalhanas
- Centro de Vigilância Epidemiológica - São Paulo (CVE), São Paulo, Brazil
| | - C S B Domingues
- Centro de Referência e Treinamento DST/Aids - São Paulo (CRT-DST/Aids) Sao Paulo, Brazil
| | - R A Souza
- Centro de Referência e Treinamento DST/Aids - São Paulo (CRT-DST/Aids) Sao Paulo, Brazil
| | - M C Gianna
- Centro de Referência e Treinamento DST/Aids - São Paulo (CRT-DST/Aids) Sao Paulo, Brazil
| | - A O Kalichman
- Centro de Referência e Treinamento DST/Aids - São Paulo (CRT-DST/Aids) Sao Paulo, Brazil
| | - O H M Leite
- Faculdade de Medicina do ABC - Centro Universitário Saúde do ABC (FM-ABC) Santo Andre, Brazil
| | - T N L Souza
- Instituto de Infectologia Emílio Ribas - SES/SP (IIER), São Paulo, Brazil
| | - D A Gomes E Costa
- Hospital do Servidor Público Estadual de São Paulo (HSPE), São Paulo, Brazil
| | | | - A F Costa
- Centro de Referência e Treinamento DST/Aids - São Paulo (CRT-DST/Aids) Sao Paulo, Brazil.,Department of Infectious and Parasitic Diseases, Faculdade de Medicina da Universidade de São Paulo (HC-FMUSP), São Paulo, Brazil
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- Centro de Referência e Treinamento DST/Aids - São Paulo (CRT-DST/Aids) Sao Paulo, Brazil
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Stefanolo JP, Tálamo M, Dodds S, de la Paz Temprano M, Costa AF, Moreno ML, Pinto-Sánchez MI, Smecuol E, Vázquez H, Gonzalez A, Niveloni SI, Mauriño E, Verdu EF, Bai JC. Real-World Gluten Exposure in Patients With Celiac Disease on Gluten-Free Diets, Determined From Gliadin Immunogenic Peptides in Urine and Fecal Samples. Clin Gastroenterol Hepatol 2021; 19:484-491.e1. [PMID: 32217152 DOI: 10.1016/j.cgh.2020.03.038] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 03/12/2020] [Accepted: 03/13/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS It is not clear how often patients who are on gluten-free diets (GFDs) for treatment of celiac disease still are exposed to gluten. We studied levels of gluten immunogenic peptides (GIP) in fecal and urine samples, collected over 4 weeks, from patients with celiac disease on a long-term GFD. METHODS We performed a prospective study of 53 adults with celiac disease who had been on a GFD for more than 2 years (median duration, 8 y; interquartile range, 5-12 y) in Argentina. At baseline, symptoms were assessed by the celiac symptom index questionnaire. Patients collected stool each Friday and Saturday and urine samples each Sunday for 4 weeks. We used a commercial enzyme-linked immunosorbent assay to measure GIP in stool and point-of-care tests to measure GIP in urine samples. RESULTS Overall, 159 of 420 stool and urine samples (37.9%) were positive for GIP; 88.7% of patients had at least 1 fecal or urine sample that was positive for GIP (median, 3 excretions). On weekends (urine samples), 69.8% of patients excreted GIP at least once, compared with 62.3% during weekdays (stool). The number of patients with a sample that was positive for GIP increased over the 4-week study period (urine samples in week 1 vs week 4: P < .05). Patients with symptoms had more weeks in which GIP was detected in stool than patients without symptoms (P < .05). The number of samples that were positive for GIP correlated with titers of deamidated gliadin peptide IgA in patients' blood samples, but not with levels of tissue transglutaminase. CONCLUSIONS Patients with celiac disease on a long-term GFD still frequently are exposed to gluten. Assays to detect GIP in stool and urine might be used to assist dietitians in assessment of GFD compliance.
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Affiliation(s)
| | - Martín Tálamo
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | - Samanta Dodds
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | | | | | - María Laura Moreno
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | - María Inés Pinto-Sánchez
- Farncombe Family Digestive Health Research Institute, McMaster University Medical Centre, Health Sciences, Hamilton, Ontario, Canada
| | - Edgardo Smecuol
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | - Horacio Vázquez
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | - Andrea Gonzalez
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | | | - Eduardo Mauriño
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | - Elena F Verdu
- Farncombe Family Digestive Health Research Institute, McMaster University Medical Centre, Health Sciences, Hamilton, Ontario, Canada
| | - Julio César Bai
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina; Research Institutes of Health, Universidad del Salvador, Buenos Aires, Argentina.
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Smecuol E, Constante M, Temprano MP, Costa AF, Moreno ML, Pinto-Sanchez MI, Vázquez H, Stefanolo JP, Gonzalez AF, D'Adamo CR, Niveloni SI, Mauriño E, Verdu EF, Bai JC. Effect of Bifidobacterium infantis NLS super strain in symptomatic coeliac disease patients on long-term gluten-free diet - an exploratory study. Benef Microbes 2020; 11:527-534. [PMID: 33032471 DOI: 10.3920/bm2020.0016] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Bifidobacterium infantis NLS super strain (B. infantis NLS-SS) was previously shown to alleviate gastrointestinal symptoms in newly diagnosed coeliac disease (CD) patients consuming gluten. A high proportion of patients following a gluten-free diet experiences symptoms despite dietary compliance. The role of B. infantis in persistently symptomatic CD patients has not been explored. The aim of the study was to evaluate the effect of B. infantis NLS-SS on persistent gastrointestinal symptoms in patients with CD following a long-term GFD. We conducted a randomised, cross-over, double-blind, placebo-controlled trial in symptomatic adult CD patients on a GFD for at least two years. After one-week run-in, patients were randomised to B. infantis NLS-SS or placebo for 3 weeks with cross-over after a 2-week wash-out period. We estimated changes (Δ) in celiac symptom index (CSI) before and after treatment. Stool samples were collected for faecal microbiota analysis (16S rRNA sequencing). Gluten immunogenic peptide (GIP) excretion in stool and urine samples was measured at each study period. Eighteen patients were enrolled; six patients were excluded due violations in protocol. For patients with the highest clinical burden, CD symptoms were lower in probiotic than in placebo treatment (P=0.046). B. infantis and placebo treated groups had different microbiota profiles as assessed by beta diversity clustering. In probiotic treated groups, we observed an increase in abundance of B. infantis. Treatment with B. infantis was associated with decreased abundance of Ruminococcus sp. and Bifidobacterium adolescentis. GIP excretion in stools and urine was similar at each treatment period. There were no differences in adverse effects between the two groups. B. infantis NLS-SS improves specific CD symptoms in a subset of highly symptomatic treated patients (GFD). This is associated with a shift in stool microbiota profile. Larger studies are needed to confirm these findings. ClinicalTrials.gov: NCT03271138.
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Affiliation(s)
- E Smecuol
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Av. Caseros 2061, 1264 Buenos Aires, Argentina
| | - M Constante
- Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - M P Temprano
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Av. Caseros 2061, 1264 Buenos Aires, Argentina
| | - A F Costa
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Av. Caseros 2061, 1264 Buenos Aires, Argentina
| | - M L Moreno
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Av. Caseros 2061, 1264 Buenos Aires, Argentina
| | - M I Pinto-Sanchez
- Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - H Vázquez
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Av. Caseros 2061, 1264 Buenos Aires, Argentina
| | - J P Stefanolo
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Av. Caseros 2061, 1264 Buenos Aires, Argentina
| | - A F Gonzalez
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Av. Caseros 2061, 1264 Buenos Aires, Argentina
| | - C R D'Adamo
- University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - S I Niveloni
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Av. Caseros 2061, 1264 Buenos Aires, Argentina
| | - E Mauriño
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Av. Caseros 2061, 1264 Buenos Aires, Argentina
| | - E F Verdu
- Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - J C Bai
- Dr. C. Bonorino Udaondo Gastroenterology Hospital, Av. Caseros 2061, 1264 Buenos Aires, Argentina.,Research Institutes, School of Medicine; Universidad del Salvador, Buenos Aires, Argentina
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Giner M, Santana L, Costa AF, Vázquez-Gámez MA, Colmenero M, Olmo FJ, Chicardi E, Torres Y, Montoya-García MJ. Estudio de biocompatibilidad y osteointegración de nuevos materiales protésicos. Rev Osteoporos Metab Miner 2020. [DOI: 10.4321/s1889-836x2020000300004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Ricaño-Ponce I, Gutierrez-Achury J, Costa AF, Deelen P, Kurilshikov A, Zorro MM, Platteel M, van der Graaf A, Sanna S, Daffra O, Zhernakova A, Fu J, Trynka G, Smecuol E, Niveloni SI, Bai JC, Kumar V, Wijmenga C. Immunochip meta-analysis in European and Argentinian populations identifies two novel genetic loci associated with celiac disease. Eur J Hum Genet 2020; 28:313-323. [PMID: 31591516 PMCID: PMC7028987 DOI: 10.1038/s41431-019-0520-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 09/03/2019] [Accepted: 09/10/2019] [Indexed: 12/30/2022] Open
Abstract
Celiac disease (CeD) is a common immune-mediated disease of the small intestine that is triggered by exposure to dietary gluten. While the HLA locus plays a major role in disease susceptibility, 39 non-HLA loci were also identified in a study of 24,269 individuals. We now build on this earlier study by adding 4125 additional Caucasian samples including an Argentinian cohort. In doing so, we not only confirm the previous associations, we also identify two novel independent genome-wide significant associations at loci: 12p13.31 and 22q13.1. By applying a genomics approach and differential expression analysis in CeD intestinal biopsies, we prioritize potential causal genes at these novel loci, including LTBR, CYTH4, and RAC2. Nineteen prioritized causal genes are overlapping known drug targets. Pathway enrichment analysis and expression of these genes in CeD biopsies suggest that they have roles in regulating multiple pathways such as the tumor necrosis factor (TNF) mediated signaling pathway and positive regulation of I-κB kinase/NF-κB signaling.
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Affiliation(s)
- Isis Ricaño-Ponce
- Department of Genetics, University Medical Center Groningen, University of Groningen, 9700RB, Groningen, the Netherlands
| | - Javier Gutierrez-Achury
- Department of Genetics, University Medical Center Groningen, University of Groningen, 9700RB, Groningen, the Netherlands
| | - Ana Florencia Costa
- Small Bowel Section, Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | - Patrick Deelen
- Department of Genetics, University Medical Center Groningen, University of Groningen, 9700RB, Groningen, the Netherlands
| | - Alexander Kurilshikov
- Department of Genetics, University Medical Center Groningen, University of Groningen, 9700RB, Groningen, the Netherlands
| | - Maria Magdalena Zorro
- Department of Genetics, University Medical Center Groningen, University of Groningen, 9700RB, Groningen, the Netherlands
| | - Mathieu Platteel
- Department of Genetics, University Medical Center Groningen, University of Groningen, 9700RB, Groningen, the Netherlands
| | - Adriaan van der Graaf
- Department of Genetics, University Medical Center Groningen, University of Groningen, 9700RB, Groningen, the Netherlands
| | - Serena Sanna
- Department of Genetics, University Medical Center Groningen, University of Groningen, 9700RB, Groningen, the Netherlands
| | - Oscar Daffra
- Gastroenterology Service, OSEP Mendoza, Mendoza, Argentina
| | - Alexandra Zhernakova
- Department of Genetics, University Medical Center Groningen, University of Groningen, 9700RB, Groningen, the Netherlands
| | - Jingyuan Fu
- Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9700RB, Groningen, the Netherlands
| | - Gosia Trynka
- Wellcome Sanger Institute, Hinxton, Cambridgeshire, CB10 1SA, UK
| | - Edgardo Smecuol
- Small Bowel Section, Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | - Sonia Isabel Niveloni
- Small Bowel Section, Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | - Julio Cesar Bai
- Small Bowel Section, Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | - Vinod Kumar
- Department of Genetics, University Medical Center Groningen, University of Groningen, 9700RB, Groningen, the Netherlands
- Department of Internal Medicine and Radboud Center for Infectious Diseases (RCI), Radboud University Medical Center, 6525GA, Nijmegen, the Netherlands
| | - Cisca Wijmenga
- Department of Genetics, University Medical Center Groningen, University of Groningen, 9700RB, Groningen, the Netherlands.
- K.G. Jebsen Coeliac Disease Research Centre, Department of Immunology, University of Oslo, Oslo, Norway.
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Figueiredo EP, Ribeiro JM, Nishio EK, Scandorieiro S, Costa AF, Cardozo VF, Oliveira AG, Durán N, Panagio LA, Kobayashi R, Nakazato G. New Approach For Simvastatin As An Antibacterial: Synergistic Effect With Bio-Synthesized Silver Nanoparticles Against Multidrug-Resistant Bacteria. Int J Nanomedicine 2019; 14:7975-7985. [PMID: 31632012 PMCID: PMC6781849 DOI: 10.2147/ijn.s211756] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 07/29/2019] [Indexed: 02/01/2023] Open
Abstract
Background Multidrug-resistant bacteria such as extended-spectrum beta-lactamase (ESBL), Enterobacteriaceae, and methicillin-resistant Staphylococcus aureus (MRSA) pose a challenge to the human health care system. MRSA is among the major causes of hospital-acquired and community infections. Methods Therefore, in the present study, we evaluated the antibacterial activity of silver nanoparticles synthesized by Fusarium oxysporum (AgNPbio) in combination with simvastatin against reference and multidrug-resistant bacterial strains. Results Simvastatin showed a minimal inhibitory concentration (MIC) ranging from 0.062 to 0.25 mg mL−1 against MRSA. AgNPbio with a size of 77.68± 33.95 nm and zeta potential −34.6 ± 12.7 mV showed an MIC of 0.212 mg mL−1 against S. aureus including MRSA strains. The checkerboard assay and time-kill curves exhibited a synergistic effect of the simvastatin-AgNPbio combination on antibacterial activity against MRSA strains. The combination of simvastatin and AgNPbio demonstrated antibacterial activity against Escherichia coli producing ESBL. Scanning electron microscopy showed the formation of cell surface protrusions after treatment with AgNPbio and the formation of a large amorphous mass after treatment with simvastatin, both in MRSA. Conclusion Our results indicate that the combination of AgNPbio and simvastatin could be a great future alternative in the control of bacterial infections, where, when combined with simvastatin, smaller doses of AgNPbio are required, with the same antibacterial activity.
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Affiliation(s)
- E P Figueiredo
- Department of Microbiology, Center of Biological Sciences, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - J M Ribeiro
- Department of Microbiology, Center of Biological Sciences, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - E K Nishio
- Department of Microbiology, Center of Biological Sciences, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - S Scandorieiro
- Department of Microbiology, Center of Biological Sciences, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - A F Costa
- NanoBioss, Institute of Chemistry, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
| | - V F Cardozo
- Department of Microbiology, Center of Biological Sciences, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - A G Oliveira
- Department of Microbiology, Center of Biological Sciences, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - N Durán
- NanoBioss, Institute of Chemistry, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil.,Institute of Chemistry, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil.,LNNano (National Laboratory of Nanotecnology), CNPEM, Campinas, São Paulo, Brazil
| | - L A Panagio
- Department of Microbiology, Center of Biological Sciences, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Rkt Kobayashi
- Department of Microbiology, Center of Biological Sciences, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - G Nakazato
- Department of Microbiology, Center of Biological Sciences, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
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10
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Costa AF, Sugai E, Temprano MDLP, Niveloni SI, Vázquez H, Moreno ML, Domínguez-Flores MR, Muñoz-Suano A, Smecuol E, Stefanolo JP, González AF, Cebolla-Ramirez A, Mauriño E, Verdú EF, Bai JC. Gluten immunogenic peptide excretion detects dietary transgressions in treated celiac disease patients. World J Gastroenterol 2019; 25:1409-1420. [PMID: 30918433 PMCID: PMC6429344 DOI: 10.3748/wjg.v25.i11.1409] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/08/2019] [Accepted: 01/15/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Life-long removal of gluten from the diet is currently the only way to manage celiac disease (CeD). Until now, no objective test has proven useful to objectively detect ingested gluten in clinical practice. Recently, tests that determine consumption of gluten by assessing excretion of gluten immunogenic peptides (GIP) in stool and urine have been developed. Their utility, in comparison with conventional dietary and analytical follow-up strategies, has not been fully established.
AIM To assess the performance of enzyme-linked immunosorbent assay (ELISA) and point-of-care tests (PoCTs) for GIP excretion in CeD patients on gluten-free diet (GFD).
METHODS We conducted an observational, prospective, cross-sectional study in patients following a GFD for at least two years. Using the Gastrointestinal Symptom Rating Scale questionnaire, patients were classified at enrollment as asymptomatic or symptomatic. Gluten consumption was assessed twice by 3-d dietary recall and GIP excretion (by ELISA in stool and PoCTs (commercial kits for stool and urine) in two consecutive samples. These samples and dietary reports were obtained 10 day apart one from the other. Patients were encouraged to follow their usual GFD during the study period.
RESULTS Forty-four patients were enrolled, of which 19 (43.2%) were symptomatic despite being on a GFD. Overall, 83 sets of stool and/or urine samples were collected. Eleven out of 44 patients (25.0%) had at least one positive GIP test. The occurrence of at least one positive test was 32% in asymptomatic patients compared with 15.8% in symptomatic patients. GIP was concordant with dietary reports in 65.9% of cases (Cohen´s kappa: 0.317). PoCT detected dietary indiscretions. Both ELISA and PoCT in stool were concordant (concomitantly positive or negative) in 67 out of 74 (90.5%) samples. Excretion of GIP was detected in 7 (8.4%) stool and/or urine samples from patients considered to be strictly compliant with the GFD by dietary reports.
CONCLUSION GIP detects dietary transgressions in patients on long-term GFD, irrespective of the presence of symptoms. PoCT for GIP detection constitutes a simple home-based method for self-assessment of dietary indiscretions.
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Affiliation(s)
- Ana Florencia Costa
- Julio César Bai: Small Bowel Section, Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1263, Argentina
| | - Emilia Sugai
- Julio César Bai: Small Bowel Section, Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1263, Argentina
| | - María de la Paz Temprano
- Julio César Bai: Small Bowel Section, Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1263, Argentina
| | - Sonia Isabel Niveloni
- Julio César Bai: Small Bowel Section, Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1263, Argentina
| | - Horacio Vázquez
- Julio César Bai: Small Bowel Section, Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1263, Argentina
| | - María Laura Moreno
- Julio César Bai: Small Bowel Section, Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1263, Argentina
| | | | | | - Edgardo Smecuol
- Julio César Bai: Small Bowel Section, Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1263, Argentina
| | - Juan Pablo Stefanolo
- Julio César Bai: Small Bowel Section, Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1263, Argentina
| | - Andrea F González
- Julio César Bai: Small Bowel Section, Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1263, Argentina
| | | | - Eduardo Mauriño
- Julio César Bai: Small Bowel Section, Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1263, Argentina
| | - Elena F Verdú
- Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON L8S4L8, Canada
| | - Julio César Bai
- Research Institutes, Universidad del Salvador, Buenos Aires 1050, Argentina
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11
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Bruno A, Sethuraman S, Sedler MJ, Gladstone D, Cagino K, Del Brutto VJ, Sarmiento-Bobadilla M, Costa AF, Del Brutto OH. First application of a Spanish version simplified modified Rankin Scale questionnaire. Int J Stroke 2019; 14:NP12. [PMID: 30789320 DOI: 10.1177/1747493019832983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- A Bruno
- 1 Department of Neurology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - S Sethuraman
- 2 Department of Mathematics, Augusta University, Augusta, GA, USA
| | - M J Sedler
- 3 School of Medicine, Stony Brook University, New York, NY, USA
| | - D Gladstone
- 3 School of Medicine, Stony Brook University, New York, NY, USA
| | - K Cagino
- 3 School of Medicine, Stony Brook University, New York, NY, USA
| | - V J Del Brutto
- 4 Department of Neurology, University of Chicago, Chicago, IL, USA
| | | | - A F Costa
- 5 School of Medicine, Universidad Espíritu Santo - Ecuador, Guayaquil, Ecuador
| | - O H Del Brutto
- 5 School of Medicine, Universidad Espíritu Santo - Ecuador, Guayaquil, Ecuador
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12
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Del Brutto OH, Mera RM, Peñaherrera E, Peñaherrera R, Costa AF. The relationship between oily fish intake and arterial stiffness in older adults living in rural coastal Ecuador. Nutr Metab Cardiovasc Dis 2018; 28:1173-1174. [PMID: 30274794 DOI: 10.1016/j.numecd.2018.07.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/20/2018] [Accepted: 07/25/2018] [Indexed: 11/16/2022]
Affiliation(s)
- O H Del Brutto
- School of Medicine, Universidad Espíritu Santo - Ecuador, Guayaquil, Ecuador.
| | - R M Mera
- Vanderbilt University Medical Center, Nashville, TN, USA
| | - E Peñaherrera
- Department of Cardiology, Hospital Luis Vernaza, Guayaquil, Ecuador
| | - R Peñaherrera
- School of Medicine, Universidad Espíritu Santo - Ecuador, Guayaquil, Ecuador
| | - A F Costa
- School of Medicine, Universidad Espíritu Santo - Ecuador, Guayaquil, Ecuador
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13
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Fontenele RS, Ribeiro GC, Lamas NS, Ribeiro SG, Costa AF, Boiteux LS, Fonseca MEN. First Report of Sida micrantha mosaic virus Infecting Oxalis Species in Brazil. Plant Dis 2018; 102:1862. [PMID: 30125166 DOI: 10.1094/pdis-01-18-0149-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- R S Fontenele
- Embrapa Recursos Genéticos e Biotecnologia, Brasília - DF, Brazil
| | - G C Ribeiro
- Embrapa Recursos Genéticos e Biotecnologia, Brasília - DF, Brazil
| | - N S Lamas
- Embrapa Recursos Genéticos e Biotecnologia, Brasília - DF, Brazil
| | - S G Ribeiro
- Embrapa Recursos Genéticos e Biotecnologia, Brasília - DF, Brazil
| | - A F Costa
- Embrapa Hortaliças, Brasília - DF, Brazil
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14
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Rossi DA, Daher RF, Barbé TC, Lima RSN, Costa AF, Ribeiro LP, Teodoro PE, Bhering LL. Diversity among elephant grass genotypes using Bayesian multi-trait model. Genet Mol Res 2017; 16:gmr-16-03-gmr.16039803. [PMID: 28973780 DOI: 10.4238/gmr16039803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Elephant grass is a perennial tropical grass with great potential for energy generation from biomass. The objective of this study was to estimate the genetic diversity among elephant grass accessions based on morpho-agronomic and biomass quality traits and to identify promising genotypes for obtaining hybrids with high energetic biomass production capacity. The experiment was installed at experimental area of the State Agricultural College Antônio Sarlo, in Campos dos Goytacazes. Fifty-two elephant grass genotypes were evaluated in a randomized block design with two replicates. Components of variance and the genotypic means were obtained using a Bayesian multi-trait model. We considered 350,000 iterations in the Gibbs sampler algorithm for each parameter adopted, with a warm-up period (burn-in) of 50,000 Iterations. For obtaining an uncorrelated sample, we considered five iterations (thinning) as a spacing between sampled points, which resulted in a final sample size 60,000. Subsequently, the Mahalanobis distance between each pair of genotypes was estimated. Estimates of genotypic variance indicated a favorable condition for gains in all traits. Elephant grass accessions presented greater variability for biomass quality traits, for which three groups were formed, while for the agronomic traits, two groups were formed. Crosses between Mercker Pinda México x Mercker 86-México, Mercker Pinda México x Turrialba, and Mercker 86-México x Taiwan A-25 can be carried out for obtaining elephant grass hybrids for energy purposes.
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Affiliation(s)
- D A Rossi
- Faculdade Venda Nova do Imigrante, Venda Nova do Imigrante, ES, Brasil
| | - R F Daher
- Laboratório de Melhoramento Genético Vegetal, , , Brasil
| | - T C Barbé
- Laboratório de Melhoramento Genético Vegetal, , , Brasil
| | - R S N Lima
- Universidade Federal de Alagoas, Campus Arapiraca, Arapiraca, AL, Brasil
| | - A F Costa
- Instituto Capixaba de Pesquisa, Assistência Técnica e Extensão Rural, Centro Regional de Desenvolvimento Rural, Centro Serrano, Domingos Martins, ES, Brasil
| | - L P Ribeiro
- Laboratório de Biometria, Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, MG, Brasil
| | - P E Teodoro
- Laboratório de Biometria, Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, MG, Brasil
| | - L L Bhering
- Laboratório de Biometria, Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, MG, Brasil
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15
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Costa AF, Tremblay St-Germain A, Abdolell M, Smoot RL, Cleary S, Jhaveri KS. Can contrast-enhanced MRI with gadoxetic acid predict liver failure and other complications after major hepatic resection? Clin Radiol 2017; 72:598-605. [PMID: 28274510 DOI: 10.1016/j.crad.2017.02.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 01/09/2017] [Accepted: 02/06/2017] [Indexed: 12/17/2022]
Abstract
AIM To determine whether a combination of clinical factors, the future liver remnant (FLR) ratio, and hepatic uptake of gadoxetic acid can be used to predict post-hepatectomy liver failure (PHLF) and other major complications (OMC). MATERIALS AND METHODS Sixty-five consecutive patients who underwent pre-hepatectomy gadoxetic acid-enhanced magnetic resonance imaging (MRI) between October 2010 and December 2013 were included. The relative liver enhancement (RLE) of gadoxetic acid was calculated from regions of interest on MRI, and FLR ratios were obtained from computed tomography (CT). PHLF and OMC were defined by the International Study Group of Liver Surgery criteria and Clavien-Dindo grade of ≥3, respectively. Multivariate logistic regression modelling was performed to identify predictors of PHLF and OMC, including RLE, FLR ratio, age, sex, chemotherapy history, intra-operative blood loss, and intra-operative transfusion. RESULTS Nine patients experienced PHLF and another nine patients experienced OMC. RLE was comparable to the FLR ratio in predicting PHLF (areas under the receiver operating characteristic [AUROC] curves, 0.665 and 0.705), but performed poorly in predicting OMCs (AUROCs, 0.556 and 0.702). Combining all clinical and imaging parameters as predictors yielded the best performing predictive models (AUROCs, 0.875 and 0.742 for PHLF and OMC, respectively). CONCLUSION A model based on clinical parameters, the FLR ratio, and RLE of gadoxetic acid may improve pre-hepatectomy risk assessment.
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Affiliation(s)
- A F Costa
- Joint Department of Medical Imaging, University Health Network and Mount Sinai Hospital, University of Toronto, Canada.
| | - A Tremblay St-Germain
- Department of Surgery, Division of Hepatobiliary Surgery, University Health Network, University of Toronto, Canada
| | - M Abdolell
- Department of Surgery, Division of Hepatobiliary Surgery, University Health Network, University of Toronto, Canada
| | - R L Smoot
- Department of Surgery, Division of Hepatobiliary Surgery, University Health Network, University of Toronto, Canada
| | - S Cleary
- Department of Surgery, Division of Hepatobiliary Surgery, University Health Network, University of Toronto, Canada
| | - K S Jhaveri
- Joint Department of Medical Imaging, University Health Network and Mount Sinai Hospital, University of Toronto, Canada
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16
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Costa AF, Teodoro PE, Bhering LL, Leal NR, Tardin FD, Daher RF. Biplot analysis of strawberry genotypes recommended for the State of Espírito Santo. Genet Mol Res 2016; 15:gmr8919. [PMID: 27706604 DOI: 10.4238/gmr.15038919] [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: 11/03/2022]
Abstract
Most strawberry genotypes grown commercially in Brazil originate from breeding programs in the United States, and are therefore not adapted to the various soil and climatic conditions found in Brazil. Thus, quantifying the magnitude of genotype x environment (GE) interactions serves as a primary means for increasing average Brazilian strawberry yields, and helps provide specific recommendations for farmers on which genotypes meet high yield and phenotypic stability thresholds. The aim of this study was to use AMMI (additive main effects and multiplicative interaction) and GGE biplot (genotype main effects + genotype x environment interaction) analyses to identify high-yield, stable strawberry genotypes grown at three locations in Espírito Santo for two agricultural years. We evaluated seven strawberry genotypes (Dover, Camino Real, Ventana, Camarosa, Seascape, Diamante, and Aromas) at three locations (Domingos Martins, Iúna, and Muniz Freire) in agricultural years 2006 and 2007, totaling six study environments. Joint analysis of variance was calculated using yield data (t/ha), and AMMI and GGE biplot analysis was conducted following the detection of a significant genotypes x agricultural years x locations (G x A x L) interaction. During the two agricultural years, evaluated locations were allocated to different regions on biplot graphics using both methods, indicating distinctions among them. Based on the results obtained from the two methods used in this study to investigate the G x A x L interaction, we recommend growing the Camarosa genotype for production at the three locations assessed due to the high frequency of favorable alleles, which were expressed in all localities evaluated regardless of the agricultural year.
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Affiliation(s)
- A F Costa
- Instituto Capixaba de Pesquisa, Assistência Técnica e Extensão Rural, Centro Regional de Desenvolvimento Rural, Centro Serrano, Domingos Martins, ES, Brasil
| | - P E Teodoro
- Laboratório de Biometria, Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, MG, Brasil
| | - L L Bhering
- Laboratório de Biometria, Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, MG, Brasil
| | - N R Leal
- Laboratório de Melhoramento Genético Vegetal, Universidade Estadual do Norte Fluminense "Darcy Ribeiro", Campos dos Goytacazes, RJ, Brasil
| | - F D Tardin
- Núcleo de Desenvolvimento de Cultivares, Embrapa Milho e Sorgo, Sinop, MT, Brasil
| | - R F Daher
- Laboratório de Melhoramento Genético Vegetal, Universidade Estadual do Norte Fluminense "Darcy Ribeiro", Campos dos Goytacazes, RJ, Brasil
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17
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Vila Nova MX, Leite NGA, Houllou LM, Medeiros LV, Lira Neto AC, Hsie BS, Borges-Paluch LR, Santos BS, Araujo CSF, Rocha AA, Costa AF. Genetic variability and resistance of cultivars of cowpea [Vigna unguiculata (L.) Walp] to cowpea weevil (Callosobruchus maculatus Fabr.). Genet Mol Res 2014; 13:2323-32. [PMID: 24737480 DOI: 10.4238/2014.march.31.12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The cowpea weevil (Callosobruchus maculatus Fabr.) is the most destructive pest of the cowpea bean; it reduces seed quality. To control this pest, resistance testing combined with genetic analysis using molecular markers has been widely applied in research. Among the markers that show reliable results, the inter-simple sequence repeats (ISSRs) (microsatellites) are noteworthy. This study was performed to evaluate the resistance of 27 cultivars of cowpea bean to cowpea weevil. We tested the resistance related to the genetic variability of these cultivars using ISSR markers. To analyze the resistance of cultivars to weevil, a completely randomized test design with 4 replicates and 27 treatments was adopted. Five pairs of the insect were placed in 30 grains per replicate. Analysis of variance showed that the number of eggs and emerged insects were significantly different in the treatments, and the means were compared by statistical tests. The analysis of the large genetic variability in all cultivars resulted in the formation of different groups. The test of resistance showed that the cultivar Inhuma was the most sensitive to both number of eggs and number of emerged adults, while the TE96-290-12-G and MNC99-537-F4 (BRS Tumucumaque) cultivars were the least sensitive to the number of eggs and the number of emerged insects, respectively.
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Affiliation(s)
- M X Vila Nova
- Department of Neurosurgery, Spine and Spinal Cord Institute, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - N G A Leite
- Department of Neurosurgery, Spine and Spinal Cord Institute, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - L M Houllou
- Department of Neurosurgery, Spine and Spinal Cord Institute, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - L V Medeiros
- Department of Neurosurgery, Spine and Spinal Cord Institute, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - A C Lira Neto
- Department of Neurosurgery, Spine and Spinal Cord Institute, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - B S Hsie
- Department of Neurosurgery, Spine and Spinal Cord Institute, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - L R Borges-Paluch
- Department of Neurosurgery, Spine and Spinal Cord Institute, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - B S Santos
- Department of Neurosurgery, Spine and Spinal Cord Institute, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | | | - A A Rocha
- Department of Neurosurgery, Spine and Spinal Cord Institute, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - A F Costa
- Department of Neurosurgery, Spine and Spinal Cord Institute, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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18
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Bevilacqua E, Paulesu L, Ferro EAV, Ietta F, Faria MR, Lorenzon AR, Costa AF, Martucci M. Review: putative roles for the macrophage migratory inhibitory factor at the maternal fetal interface. Placenta 2013; 35 Suppl:S51-6. [PMID: 24215782 DOI: 10.1016/j.placenta.2013.10.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Revised: 10/22/2013] [Accepted: 10/23/2013] [Indexed: 12/22/2022]
Abstract
Complex and dynamic networks of molecules participate in the essential interactions between maternal organism, placenta and fetus in a healthy and successful pregnancy. Macrophage migratory inhibitory factor (MIF) is one of several molecules produced at implantation sites; MIF is mostly expressed by trophoblast cells. This has led to expectations of MIF's relevance as a partner in the maternal/fetal dialog. MIF is known by its biological interactions and functional roles as an activator of innate immunity, regulating subsequent adaptive responses, which include inhibition of migration of mononuclear cells in vitro, antagonism of glucocorticoids, and regulation of expression of Toll-like receptor 4. Beyond roles in the inflammatory response, MIF can interfere with proliferative activities in different cell types, as well as with cell death pathways. This intriguing factor found at the human, porcine, ovine, bovine and rodent maternal-fetal interfaces is present in a time- and spatially-dependent manner, indicating regulatory roles in the process of embryo implantation, placental development, maintenance of pregnancy and birth. Here, we will review MIF participation in placental physiology, including new evidence for a dialog with uterine cells, and a potential role in protection of uterine decidual cells.
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Affiliation(s)
- E Bevilacqua
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, SP, Brazil.
| | - L Paulesu
- Department of Life Sciences, Reproductive Physiology, University of Siena, Siena, Italy
| | - E A V Ferro
- Laboratory of Histology and Embryology, Institute of Biomedical Sciences, Federal University of Uberlandia, Uberlandia, MG, Brazil
| | - F Ietta
- Department of Life Sciences, Reproductive Physiology, University of Siena, Siena, Italy
| | - M R Faria
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, SP, Brazil
| | - A R Lorenzon
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, SP, Brazil
| | - A F Costa
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, SP, Brazil; Laboratory of Cell Biology, Stomatology Department, Dentistry School, University of São Paulo, SP, Brazil
| | - M Martucci
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, SP, Brazil
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19
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Costa AF, Fasih N, Thipphavong S. Education and imaging: gastrointestinal: villous adenoma of the ampulla of Vater causing acute pancreatitis. J Gastroenterol Hepatol 2013; 28:379. [PMID: 23339391 DOI: 10.1111/jgh.12050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- A F Costa
- Department of Radiology, The Ottawa Hospital, Ottawa, Canada
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20
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Altemani A, Costa AF, Montalli V, Mosqueda-Taylor A, Paes de Almeida O, León JE, Hermsen M. Signet-ring cell change in adenoid cystic carcinoma: a clinicopathologic and immunohistochemical study of four cases. Histopathology 2012:no-no. [PMID: 24750244 DOI: 10.1111/j.1365-2559.2012.04352.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS Signet-ring cell (SRC) change has not been reported in adenoid cystic carcinomas (ACC). This study describes the clinicopathological and immunohistochemical findings in four cases of ACC with SRCs (ACC-SRC), in which the relative proportion of the SRC component ranged from 25% to 50%. METHODS AND RESULTS The median age was 58 years (range: 48 to 81 y) and all patients were women. The involved sites were sinonasal, lip and submandibular. Two patients developed lung metastasis and one died of disease 63 months after tumor resection. Neither mucinous nor lipid substances were detected in the SRCs. These were positive for AE1/AE3, CK14 and EMA; which highlighted the intracytoplasmic vacuole borders. The SRC nests were surrounded by α-SMA and p63 positive myoepithelial cells. When compared to the conventional component, the SRCs exhibited similar p53 positivity but lower Ki-67 and mitotic indices. SRCs were C-Myb negative. Ultrastructural examination revealed that the intracytoplasmic vacuoles were lumens lined by microvilli. CONCLUSIONS ACC-SRC is a nonmucin and nonlipid producing phenomenon, possibly related to disturbed differentiation of ductal/luminal cells. This cellular modification in ACC apparently does not change the biological behavior of the tumor but it may cause significant diagnostic problems, particularly in incisional biopsies. © 2012 Blackwell Publishing Ltd.
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Affiliation(s)
- A Altemani
- Department of Pathology, University of Campinas, (UNICAMP), Campinas, SP, BrazilDepartment of Health Care, Universidad Autónoma Metropolitana Xochimilco, MéxicoDepartment of Oral Pathology, University of Campinas, (FOP-UNICAMP), Piracicaba, SP, BrazilDepartment of Oral Pathology, University of São Paulo, (FORP-USP), Ribeirão Preto, SP, BrazilDepartment of Otolaryngology, IUOPA, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - A F Costa
- Department of Pathology, University of Campinas, (UNICAMP), Campinas, SP, BrazilDepartment of Health Care, Universidad Autónoma Metropolitana Xochimilco, MéxicoDepartment of Oral Pathology, University of Campinas, (FOP-UNICAMP), Piracicaba, SP, BrazilDepartment of Oral Pathology, University of São Paulo, (FORP-USP), Ribeirão Preto, SP, BrazilDepartment of Otolaryngology, IUOPA, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Vam Montalli
- Department of Pathology, University of Campinas, (UNICAMP), Campinas, SP, BrazilDepartment of Health Care, Universidad Autónoma Metropolitana Xochimilco, MéxicoDepartment of Oral Pathology, University of Campinas, (FOP-UNICAMP), Piracicaba, SP, BrazilDepartment of Oral Pathology, University of São Paulo, (FORP-USP), Ribeirão Preto, SP, BrazilDepartment of Otolaryngology, IUOPA, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - A Mosqueda-Taylor
- Department of Pathology, University of Campinas, (UNICAMP), Campinas, SP, BrazilDepartment of Health Care, Universidad Autónoma Metropolitana Xochimilco, MéxicoDepartment of Oral Pathology, University of Campinas, (FOP-UNICAMP), Piracicaba, SP, BrazilDepartment of Oral Pathology, University of São Paulo, (FORP-USP), Ribeirão Preto, SP, BrazilDepartment of Otolaryngology, IUOPA, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - O Paes de Almeida
- Department of Pathology, University of Campinas, (UNICAMP), Campinas, SP, BrazilDepartment of Health Care, Universidad Autónoma Metropolitana Xochimilco, MéxicoDepartment of Oral Pathology, University of Campinas, (FOP-UNICAMP), Piracicaba, SP, BrazilDepartment of Oral Pathology, University of São Paulo, (FORP-USP), Ribeirão Preto, SP, BrazilDepartment of Otolaryngology, IUOPA, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - J E León
- Department of Pathology, University of Campinas, (UNICAMP), Campinas, SP, BrazilDepartment of Health Care, Universidad Autónoma Metropolitana Xochimilco, MéxicoDepartment of Oral Pathology, University of Campinas, (FOP-UNICAMP), Piracicaba, SP, BrazilDepartment of Oral Pathology, University of São Paulo, (FORP-USP), Ribeirão Preto, SP, BrazilDepartment of Otolaryngology, IUOPA, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - M Hermsen
- Department of Pathology, University of Campinas, (UNICAMP), Campinas, SP, BrazilDepartment of Health Care, Universidad Autónoma Metropolitana Xochimilco, MéxicoDepartment of Oral Pathology, University of Campinas, (FOP-UNICAMP), Piracicaba, SP, BrazilDepartment of Oral Pathology, University of São Paulo, (FORP-USP), Ribeirão Preto, SP, BrazilDepartment of Otolaryngology, IUOPA, Hospital Universitario Central de Asturias, Oviedo, Spain
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21
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Costa AF, Demasi APD, Bonfitto VLL, Bonfitto JFL, Furuse C, Araújo VC, Metze K, Altemani A. Angiogenesis in salivary carcinomas with and without myoepithelial differentiation. Virchows Arch 2008; 453:359-67. [PMID: 18795324 DOI: 10.1007/s00428-008-0664-z] [Citation(s) in RCA: 17] [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] [Received: 03/04/2008] [Revised: 08/18/2008] [Accepted: 08/20/2008] [Indexed: 01/05/2023]
Abstract
To investigate whether salivary carcinomas with and without myoepithelial differentiation could present differences regarding degree of angiogenesis, we compared tumor vascularization between adenoid cystic (31 cases) and epithelial-myoepithelial carcinomas (14) versus mucoepidermoid (37) carcinoma. The expression of peroxiredoxin I was also studied to verify the potential relationship between cellular metabolism and microvascular density. Microvascular density for CD34 and CD105 were significantly lower in carcinomas with myoepithelial differentiation. However, no correlation was found between degree of angiogenesis and amounts of myoepithelial cells. High-grade peroxiredoxin I expression was found in 73.7% of mucoepidermoid carcinomas, whereas 85.1% of carcinomas with myoepithelial differentiation presented low-grade expression. In conclusion, carcinomas with myoepithelial differentiation, regardless of the amounts of myoepithelial cells, are associated to a significantly lower vascular density. The reasons for this lower angiogenic activity remain to be determined but could be related to metabolic characteristics of the cancer cells.
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Affiliation(s)
- A F Costa
- Department of Pathology, Faculty of Medical Sciences, University of Campinas, Campinas, Sao Paulo, Brazil
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22
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Lucas M, Costa AF, Montori M, Solano F, Zayas MD, Izquierdo G. Germline mutations in the CCM1 gene, encoding Krit1, cause cerebral cavernous malformations. Ann Neurol 2001; 49:529-32. [PMID: 11310633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Mutations in the Kritl gene have been recently discovered as the cause of hereditary cerebral cavernous angioma. We sought the possibility that de novo, noninherited mutations of Kritl also cause cavernous angioma. A patient with two cerebral malformations carries a heterozygous deletion of two base pairs (741delTC) in exon VI of the Kritl gene. The deletion initiates a frameshift mutation that, 23 amino acids downstream, encodes a TAA stop triplet replacing a CAT triplet of histidine at exon VII (H271X). Magnetic resonance images of the parents were normal, neither parent carries the 741delTC mutation, and both bear the wild-type sequence of exon VI. These findings document a de novo germline mutation in Kritl gene that causes cerebral cavernous malformations.
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Affiliation(s)
- M Lucas
- Servicio de Biología Molecular, Hospital Universitario Virgen Macarena, Seville, Spain.
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Lucas M, Solano F, Zayas MD, García-Moreno JM, Gamero MA, Costa AF, Izquierdo G. Spanish families with cerebral cavernous angioma do not bear 742C-->T Hispanic American mutation of the KRIT1 gene. Ann Neurol 2000; 47:836. [PMID: 10852555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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24
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Fernández-Arcás N, Diéguez-Lucena JL, Costa AF, García-Villanova J, Ruiz-Galdón M, Peña J, Morell M, Reyes-Engel A. Quantification by additive RT-PCR of HIV-1 RNA plasma levels in different stages of HIV-1 infection. Rev Esp Fisiol 1997; 53:307-15. [PMID: 9442577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In this study, virion-associated RNA was measured in plasma from twenty six patients in various stages of HIV-1 disease by the additive RT-PCR method. Plasma viral RNA levels were inversely correlated (r = -0.72894) with total CD4+ cell counts and directly (r = 0.86964) with serum titre beta 2-microglobulin in chronically infected patients. This additive RT-PCR is based on a mathematical logistic adjustment of the standard curve and the use of an internal standard identical to the target molecule, which represents a control system for the efficiency of RT-PCR and allows a continuous assessment of the accuracy based on the recovery.
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Affiliation(s)
- N Fernández-Arcás
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad de Málaga, Spain
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25
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Picon PD, Gonçalves SC, Wainstein MV, Costa AF, Mengarda CV, Machado RP, Berlim GL, Edelweiss M, Edelweiss MI, Ribeiro JP. Atherosclerosis and acute arterial thrombosis in rabbits: a model using balloon desendothelization without dietary intervention. Braz J Med Biol Res 1997; 30:415-7. [PMID: 9246241 DOI: 10.1590/s0100-879x1997000300017] [Citation(s) in RCA: 8] [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] [Indexed: 02/04/2023] Open
Abstract
Acute thrombosis can be induced in rabbits by a triggering protocol using Russell's viper venom and histamine given after 8 months of a 1% cholesterol diet and balloon desendothelization. In the present study, we tested the hypothesis that aortic desendothelization performed 4 months before the triggering protocol without a high cholesterol diet is a highly effective and less expensive way of producing arterial atherosclerosis and thrombosis. Nineteen male New Zealand white rabbits on a normal diet were studied. The control group (N = 9) received no intervention during the 4-month observation period, while the other group (N = 10) was submitted to aortic balloon desendothelization using a 4F Fogarty catheter. At the end of this period, all animals were killed 48 h after receiving the first dose of the triggering treatment. Eight of 10 rabbits (80%) in the balloon-trauma group presented platelet-rich arterial thrombosis while none of the animals in the control group had thrombus formation (P < 0.01). Thus, this model, using balloon desendothelization without dietary manipulation, induces arterial atherosclerosis and thrombosis and may provide possibilities to test new therapeutic approaches.
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Affiliation(s)
- P D Picon
- Departamento de Farmacologia, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Brasil
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Ribeiro PC, Bruno AC, Saboia e Silva PL, Barbosa CR, Ribeiro EP, Monteiro EC, Costa AF. Detection of reentry currents in atrial flutter by magnetocardiography. IEEE Trans Biomed Eng 1992; 39:818-24. [PMID: 1505995 DOI: 10.1109/10.148389] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We discuss the use of magnetocardiography to detect reentry currents in cardiac flutter and fibrillation. The magnetic field produced by induced atrial flutter was measured in isolated rabbit hearts. A moving dipole model is proposed to treat the experimental data and to locate the reentry path.
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Affiliation(s)
- P C Ribeiro
- Departamento de Fisica, Pontificia Universidade Catolica do Rio de Janeiro, Brasil
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27
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Lopes JA, Campos GP, Costa AF, Saad EA. [Mechanism of bradycardia during coronary angiography in the dog]. Arq Bras Cardiol 1977; 30:319-25. [PMID: 597079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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28
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Costa AF, Andrade GN, Coutinho ZP, Jouval HE. Method for evaluation of systemic to pulmonary artery pre-capillary shunts. Bull Physiopathol Respir (Nancy) 1970; 6:265-93. [PMID: 4940886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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