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Cardoso CS, de Carvalho FF, Gomes RC, Gianini RJ, Fanelli C, Noronha IDL, Dos Santos NB, Komatsu D, Randazzo-Moura P. New approaches to second-degree burn healing: Polyvinyl alcohol membrane loaded to arnica combined to laser therapy. J Biomater Appl 2024; 38:1058-1072. [PMID: 38470813 DOI: 10.1177/08853282241238609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
Second-degree burns require greater care, as the damage is more extensive and worrisome and the use of a biomaterial can help in the cell repair process, with better planning, low cost, and better accessibility. Arnica has anti-inflammatory and analgesic properties in skin lesions treatments and laser therapy is another therapeutic alternative for burns. Evaluate the effects of arnica incorporated into PVA associated or not with low intensity laser on burns in rats. PVA and PVA with arnica (PVA+A) were obtained and characterized physicochemically. Through in vivo studies, the effects of PVA and PVA+A with or without the application of laser on the lesions allowed histological and immunohistochemical analyzes. PVA+A was biocompatible and with sustained release of the active, being a promising pharmacological tool and confirmed that laser therapy was effective in accelerating the healing process, due to its potential biomodulator, improving inflammatory aspects, promoting rapid healing in skin lesions.
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Affiliation(s)
- Carolina Silva Cardoso
- Program of Postgraduate in Biomaterials and Regenerative Medicine, Faculty of Medical and Health Sciences, Pontifical Catholic University of São Paulo (PUC-SP), São Paulo, Brazil
| | - Filipe Feitosa de Carvalho
- Program of Postgraduate in Biomaterials and Regenerative Medicine, Faculty of Medical and Health Sciences, Pontifical Catholic University of São Paulo (PUC-SP), São Paulo, Brazil
| | - Rodrigo César Gomes
- Biomaterials Laboratory, Faculty of Medical and Health Sciences, Pontifical Catholic University of São Paulo (PUC-SP), São Paulo, Brazil
| | - Reinaldo José Gianini
- Program of Postgraduate in Biomaterials and Regenerative Medicine, Faculty of Medical and Health Sciences, Pontifical Catholic University of São Paulo (PUC-SP), São Paulo, Brazil
| | - Camilla Fanelli
- Laboratory of Cellular, Genetic, and Molecular Nephrology, Renal Division, University of São Paulo Medical School (USP), São Paulo, Brazil
| | - Irene de Lourdes Noronha
- Laboratory of Cellular, Genetic, and Molecular Nephrology, Renal Division, University of São Paulo Medical School (USP), São Paulo, Brazil
| | - Nelson Brancaccio Dos Santos
- Biomaterials Laboratory, Faculty of Medical and Health Sciences, Pontifical Catholic University of São Paulo (PUC-SP), São Paulo, Brazil
| | - Daniel Komatsu
- Program of Postgraduate in Biomaterials and Regenerative Medicine, Faculty of Medical and Health Sciences, Pontifical Catholic University of São Paulo (PUC-SP), São Paulo, Brazil
| | - Priscila Randazzo-Moura
- Program of Postgraduate in Biomaterials and Regenerative Medicine, Faculty of Medical and Health Sciences, Pontifical Catholic University of São Paulo (PUC-SP), São Paulo, Brazil
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Pereira GM, Egito AA, Gomes RC, Ribas MN, Torres Junior RAA, Fernandes Junior JA, Menezes GRO. Corrigendum to 'Water requirements of beef production can be reduced by genetic selection' [Animal: Int. J. Animal Biosci. 15 (2021) 100142]. Animal 2021; 15:100276. [PMID: 34099415 DOI: 10.1016/j.animal.2021.100276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- G M Pereira
- Animal Science Graduate Program, Federal University of Mato Grosso do Sul, Sen. Filinto Müller Av., 2443, 79070-900 Campo Grande, MS, Brazil
| | - A A Egito
- Animal Science Graduate Program, Federal University of Mato Grosso do Sul, Sen. Filinto Müller Av., 2443, 79070-900 Campo Grande, MS, Brazil; Embrapa Beef Cattle, Rádio Maia Av., 830, 70106-550 Campo Grande, MS, Brazil
| | - R C Gomes
- Animal Science Graduate Program, Federal University of Mato Grosso do Sul, Sen. Filinto Müller Av., 2443, 79070-900 Campo Grande, MS, Brazil; Embrapa Beef Cattle, Rádio Maia Av., 830, 70106-550 Campo Grande, MS, Brazil
| | - M N Ribas
- Intergado Ltd, Rio Paranaguá St., 1463, 32280-300 Contagem, MG, Brazil
| | - R A A Torres Junior
- Embrapa Beef Cattle, Rádio Maia Av., 830, 70106-550 Campo Grande, MS, Brazil
| | | | - G R O Menezes
- Embrapa Beef Cattle, Rádio Maia Av., 830, 70106-550 Campo Grande, MS, Brazil.
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Novo LC, Gondo A, Gomes RC, Fernandes Junior JA, Ribas MN, Brito LF, Laureano MMM, Araújo CV, Menezes GRO. Genetic parameters for performance, feed efficiency, and carcass traits in Senepol heifers. Animal 2021; 15:100160. [PMID: 33546982 DOI: 10.1016/j.animal.2020.100160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 11/26/2020] [Accepted: 11/27/2020] [Indexed: 11/25/2022] Open
Abstract
Improving feed efficiency is a key breeding goal in the beef cattle industry. In this study, we estimated the genetic parameters for feed efficiency and carcass traits in Senepol cattle raised in tropical regions. Various indicators of feed efficiency [gain to feed ratio (G:F), feed conversion ratio (FCR), residual weight gain (RG), residual intake and body weight gain (RIG), and residual feed intake (RFI)] as well as growth [final BW, average daily gain (ADG), and DM intake (DMI)], and carcass [rib-eye area (REA), backfat thickness (BF), intramuscular fat score, and carcass conformation score] traits were included in the study. After data editing, records from 1 393 heifers obtained between 2009 and 2018 were used for the analyses. We fitted an animal model that included contemporary group (animals from the same farm that were evaluated in the same test season) as the fixed effect, and a linear effect of animal age at the beginning of the test as a covariate; in addition to random direct additive genetic and residual effects. The (co)variance components were estimated by Bayesian inference in uni- and bivariate analyses. Our results showed that feed efficiency indicators derived from residual variables such as RG, RIG, and RFI can be improved through genetic selection (h2 = 0.14 ± 0.06, 0.13 ± 0.06, and 0.20 ± 0.08, respectively). Variables calculated as ratios such as G:F and FCR were more influenced by environmental factors (h2 = 0.08 ± 0.05 and 0.09 ± 0.05), and were, therefore, less suitable for use in breeding programs. The traits with the greatest and impact on genetic progress in feed efficiency were ADG, REA, and BF. The traits with the greatest and least impact on growth and carcass traits were RG and RFI, respectively. Selection for feed efficiency will result in distinct overall effects on the growth and carcass traits of Senepol heifers. Direct selection for lower RFI may reduce DMI and increase carcass fatness at the finishing stage, but it might also result in reduced growth and muscle deposition. Residual BW gain is associated with the highest weight gain and zero impact on REA and BF, however, it is linked to higher feed consumption. Thus, the most suitable feed efficiency indicator was RIG, as it promoted the greatest decrease in feed intake concomitant with faster growth, with a similar impact on carcass traits when compared to the other feed efficiency indicators.
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Affiliation(s)
- L C Novo
- Research and Study Center for Animal Breeding, Federal University of Mato Grosso, 1200 Alexandre Ferronato Av, Sinop, Mato Grosso 78555-000, Brazil
| | - A Gondo
- EMBRAPA, Rádio Maia Av. 830, Campo Grande, Mato Grosso do Sul 79106-550, Brazil
| | - R C Gomes
- EMBRAPA, Rádio Maia Av. 830, Campo Grande, Mato Grosso do Sul 79106-550, Brazil
| | | | - M N Ribas
- INTERGADO LTDA, 1463 Rio Paranagua Street, Contagem, Minas Gerais 32280-300, Brazil
| | - L F Brito
- Department of Animal Sciences, Purdue University, 270 S. Russell Street, West Lafayette, IN 47907, USA
| | - M M M Laureano
- Research and Study Center for Animal Breeding, Federal University of Mato Grosso, 1200 Alexandre Ferronato Av, Sinop, Mato Grosso 78555-000, Brazil
| | - C V Araújo
- Research and Study Center for Animal Breeding, Federal University of Mato Grosso, 1200 Alexandre Ferronato Av, Sinop, Mato Grosso 78555-000, Brazil
| | - G R O Menezes
- EMBRAPA, Rádio Maia Av. 830, Campo Grande, Mato Grosso do Sul 79106-550, Brazil.
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Favero R, Menezes GRO, Torres RAA, Silva LOC, Bonin MN, Feijó GLD, Altrak G, Niwa MVG, Kazama R, Mizubuti IY, Gomes RC. Crossbreeding applied to systems of beef cattle production to improve performance traits and carcass quality. Animal 2019; 13:2679-2686. [PMID: 31064578 DOI: 10.1017/s1751731119000855] [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] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Crossbreeding represents an important technique to improve growth, beef quality and adaptability in beef production systems in tropical countries. The aim of this study was to evaluate sire and dam breed effects on performance and carcass traits of crossbred cattle produced in a tropical environment. Heifers and steers were evaluated during the pre-weaning, the post-weaning (n = 173) and the finishing phase (n = 123). Animals were produced by mating Nellore (N_N), Angus × Nellore (A_N) and Caracu × Nellore (C_N) dams with Braford, Charbray and Caracu sires. After weaning, animals were raised grazing on Marandu grass for 12 months; thereafter they were housed in individual pens and finished in a feedlot, receiving a total mixed ration. Ultrasound carcass evaluations were performed to determine ribeye area (R_A), backfat thickness (B_T) and rump fat thickness (R_T). A_N progeny were heavier at birth than N_N (P < 0.05), and Braford progeny had greater birth BW than Caracu (P < 0.05). Greater weaning BW was observed in the A_N and C_N offspring compared to N_N (P < 0.01). Greater average daily gain during the post-weaning period was verified in the N_N progeny compared to C_N (P < 0.05). No dam or sire breed effects were observed for BW at the end of the post-weaning period (P > 0.05). Progeny of N_N cows had greater B_T (P < 0.05) and R_T (P < 0.01) at the end of the post-weaning period in relation to C_N. Greater R_A was observed in the Caracu progeny than in the Braford (P < 0.05), which showed greater R_T than the Charbray progeny at the end of the post-weaning period (P < 0.05). No dam or sire breed effects were verified for final BW at the feedlot or for feed efficiency traits (P > 0.05). A_N progeny were superior in final B_T compared to C_N (P < 0.01), and Braford progeny had greater R_T at the end of finishing than Charbray (P = 0.05). The use of crossbred dams allows an increase in productivity until weaning, but this is not maintained in the post-weaning and finishing periods. The use of Braford sires produces similar growth performance in the different stages of the production system to those seen with Charbray and Caracu sires but generates animals with higher fat thickness at the end of finishing, which may improve carcass quality and commercial value.
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Affiliation(s)
- R Favero
- Department of Animal Science, State University of Londrina (UEL), Celso Garcia Cid Highway, 86057-970, Londrina, PR, Brazil
| | - G R O Menezes
- Embrapa Beef Cattle, 830 Radio Maia Avenue, 79106-550, Campo Grande, MS, Brazil
| | - R A A Torres
- Embrapa Beef Cattle, 830 Radio Maia Avenue, 79106-550, Campo Grande, MS, Brazil
| | - L O C Silva
- Embrapa Beef Cattle, 830 Radio Maia Avenue, 79106-550, Campo Grande, MS, Brazil
| | - M N Bonin
- College of Veterinary Medicine and Animal Science (FAMEZ), Federal University of Mato Grosso do Sul (UFMS), 2443 Senador Felinto Muller Avenue, 79070-900, Campo Grande, MS, Brazil
| | - G L D Feijó
- Embrapa Beef Cattle, 830 Radio Maia Avenue, 79106-550, Campo Grande, MS, Brazil
| | - G Altrak
- Department of Animal Science and Rural Development, Federal University of Santa Catarina (UFSC), Amaro Antônio Vieira Highway, 88036-020, Florianópolis, SC, Brazil
| | - M V G Niwa
- College of Veterinary Medicine and Animal Science (FAMEZ), Federal University of Mato Grosso do Sul (UFMS), 2443 Senador Felinto Muller Avenue, 79070-900, Campo Grande, MS, Brazil
| | - R Kazama
- Department of Animal Science and Rural Development, Federal University of Santa Catarina (UFSC), Amaro Antônio Vieira Highway, 88036-020, Florianópolis, SC, Brazil
| | - I Y Mizubuti
- Department of Animal Science, State University of Londrina (UEL), Celso Garcia Cid Highway, 86057-970, Londrina, PR, Brazil
| | - R C Gomes
- Embrapa Beef Cattle, 830 Radio Maia Avenue, 79106-550, Campo Grande, MS, Brazil
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5
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Lopes SRM, Gormezano NWS, Gomes RC, Aikawa NE, Pereira RMR, Terreri MT, Magalhães CS, Ferreira JC, Okuda EM, Sakamoto AP, Sallum AME, Appenzeller S, Ferriani VPL, Barbosa CM, Lotufo S, Jesus AA, Andrade LEC, Campos LMA, Bonfá E, Silva CA. Outcomes of 847 childhood-onset systemic lupus erythematosus patients in three age groups. Lupus 2017; 26:996-1001. [PMID: 28134038 DOI: 10.1177/0961203317690616] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective The objective of this study was to assess outcomes of childhood systemic lupus erythematosus (cSLE) in three different age groups evaluated at last visit: group A early-onset disease (<6 years), group B school age (≥6 and <12 years) and group C adolescent (≥12 and <18 years). Methods An observational cohort study was performed in ten pediatric rheumatology centers, including 847 cSLE patients. Results Group A had 39 (4%), B 395 (47%) and C 413 (49%). Median disease duration was significantly higher in group A compared to groups B and C (8.3 (0.1-23.4) vs 6.2 (0-17) vs 3.3 (0-14.6) years, p < 0.0001). The median Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index (SLICC/ACR-DI) (0 (0-9) vs 0 (0-6) vs 0 (0-7), p = 0.065) was comparable in the three groups. Further analysis of organ/system damage revealed that frequencies of neuropsychiatric (21% vs 10% vs 7%, p = 0.007), skin (10% vs 1% vs 3%, p = 0.002) and peripheral vascular involvements (5% vs 3% vs 0.3%, p = 0.008) were more often observed in group A compared to groups B and C. Frequencies of severe cumulative lupus manifestations such as nephritis, thrombocytopenia, and autoimmune hemolytic anemia were similar in all groups ( p > 0.05). Mortality rate was significantly higher in group A compared to groups B and C (15% vs 10% vs 6%, p = 0.028). Out of 69 deaths, 33/69 (48%) occurred within the first two years after diagnosis. Infections accounted for 54/69 (78%) of the deaths and 38/54 (70%) had concomitant disease activity. Conclusions This large multicenter study provided evidence that early-onset cSLE group had distinct outcomes. This group was characterized by higher mortality rate and neuropsychiatric/vascular/skin organ damage in spite of comparable frequencies of severe cumulative lupus manifestations. We also identified that overall death in cSLE patients was an early event mainly attributed to infection associated with disease activity.
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Affiliation(s)
- S R M Lopes
- 1 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - N W S Gormezano
- 1 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - R C Gomes
- 2 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - N E Aikawa
- 1 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo, Brazil.,2 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - R M R Pereira
- 1 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - M T Terreri
- 3 Pediatric Rheumatology Unit, Universidade Federal de São Paulo, Brazil
| | - C S Magalhães
- 4 Pediatric Rheumatology Division, São Paulo State University (UNESP) - Faculdade de Medicina de Botucatu, Brazil
| | - J C Ferreira
- 2 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - E M Okuda
- 5 Pediatric Rheumatology Unit, Irmandade da Santa Casa de Misericórdia de São Paulo, Brazil
| | - A P Sakamoto
- 3 Pediatric Rheumatology Unit, Universidade Federal de São Paulo, Brazil
| | - A M E Sallum
- 2 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - S Appenzeller
- 6 Pediatric Rheumatology Unit, State University of Campinas (UNICAMP), Brazil
| | - V P L Ferriani
- 7 Pediatric Rheumatology Unit, Ribeirão Preto Medical School - University of São Paulo, Brazil
| | - C M Barbosa
- 8 Pediatric Rheumatology Unit, Hospital Infantil Darcy Vargas, Brazil
| | - S Lotufo
- 9 Pediatric Rheumatology Unit, Hospital Menino Jesus, Brazil
| | - A A Jesus
- 2 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - L E C Andrade
- 3 Pediatric Rheumatology Unit, Universidade Federal de São Paulo, Brazil
| | - L M A Campos
- 2 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - E Bonfá
- 1 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - C A Silva
- 1 Division of Rheumatology, Faculdade de Medicina da Universidade de São Paulo, Brazil.,2 Pediatric Rheumatology Unit, Children's Institute, Faculdade de Medicina da Universidade de São Paulo, Brazil
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Santana MHA, Ventura RV, Utsunomiya YT, Neves HHR, Alexandre PA, Oliveira Junior GA, Gomes RC, Bonin MN, Coutinho LL, Garcia JF, Silva SL, Fukumasu H, Leme PR, Ferraz JBS. A genomewide association mapping study using ultrasound-scanned information identifies potential genomic regions and candidate genes affecting carcass traits in Nellore cattle. J Anim Breed Genet 2015; 132:420-7. [PMID: 26016521 DOI: 10.1111/jbg.12167] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 02/11/2015] [Indexed: 01/02/2023]
Abstract
The aim of this study was to identify candidate genes and genomic regions associated with ultrasound-derived measurements of the rib-eye area (REA), backfat thickness (BFT) and rumpfat thickness (RFT) in Nellore cattle. Data from 640 Nellore steers and young bulls with genotypes for 290 863 single nucleotide polymorphisms (SNPs) were used for genomewide association mapping. Significant SNP associations were explored to find possible candidate genes related to physiological processes. Several of the significant markers detected were mapped onto functional candidate genes including ARFGAP3, CLSTN2 and DPYD for REA; OSBPL3 and SUDS3 for BFT; and RARRES1 and VEPH1 for RFT. The physiological pathway related to lipid metabolism (CLSTN2, OSBPL3, RARRES1 and VEPH1) was identified. The significant markers within previously reported QTLs reinforce the importance of the genomic regions, and the other loci offer candidate genes that have not been related to carcass traits in previous investigations.
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Affiliation(s)
- M H A Santana
- Faculdade de Zootecnia e Engenharia de Alimentos - USP, Pirassununga, Brazil
| | - R V Ventura
- Faculdade de Zootecnia e Engenharia de Alimentos - USP, Pirassununga, Brazil.,Centre for Genetic Improvement of Livestock, University of Guelph, Guelph, ON, Canada.,Beef Improvement Opportunties (BIO), Guelph, ON, Canada
| | - Y T Utsunomiya
- Faculdade de Ciências Agrárias e Veterinárias, UNESP, Jaboticabal, Brazil
| | - H H R Neves
- Faculdade de Ciências Agrárias e Veterinárias, UNESP, Jaboticabal, Brazil.,GenSys Consultores Associados S/C Ltda, Porto Alegre, Brazil
| | - P A Alexandre
- Faculdade de Zootecnia e Engenharia de Alimentos - USP, Pirassununga, Brazil
| | - G A Oliveira Junior
- Faculdade de Zootecnia e Engenharia de Alimentos - USP, Pirassununga, Brazil
| | - R C Gomes
- Empresa Brasileira de Pesquisa Agropecuária, CNPGC/EMBRAPA, Campo Grande, Brazil
| | - M N Bonin
- Empresa Brasileira de Pesquisa Agropecuária, CNPGC/EMBRAPA, Campo Grande, Brazil
| | - L L Coutinho
- Escola Superior de Agricultura Luiz de Queiroz, USP, Piracicaba, Brazil
| | - J F Garcia
- Faculdade de Ciências Agrárias e Veterinárias, UNESP, Jaboticabal, Brazil
| | - S L Silva
- Faculdade de Zootecnia e Engenharia de Alimentos - USP, Pirassununga, Brazil
| | - H Fukumasu
- Faculdade de Zootecnia e Engenharia de Alimentos - USP, Pirassununga, Brazil
| | - P R Leme
- Faculdade de Zootecnia e Engenharia de Alimentos - USP, Pirassununga, Brazil
| | - J B S Ferraz
- Faculdade de Zootecnia e Engenharia de Alimentos - USP, Pirassununga, Brazil
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7
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Santana MHA, Gomes RC, Utsunomiya YT, Neves HHR, Novais FJ, Bonin MN, Fukumasu H, Garcia JF, Alexandre PA, Oliveira Junior GA, Coutinho LL, Ferraz JBS. Genome-wide association with residual body weight gain in Bos indicus cattle. Genet Mol Res 2015; 14:5229-33. [PMID: 26125717 DOI: 10.4238/2015.may.18.14] [Citation(s) in RCA: 7] [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: 11/03/2022]
Abstract
Weight gain is a key performance trait for beef cat-tle; however, attention should be given to the production costs for better profitability. Therefore, a feed efficiency trait based on per-formance can be an interesting approach to improve performance without increasing food costs. To identify candidate genes and ge-nomic regions associated with residual body weight gain (RWG), we conducted a genome-wide association study (GWAS) with 720 Nellore cattle using the GRAMMAR-Gamma association test. We identified 30 significant single nucleotide polymorphisms (SNPs), especially on chromosomes 2, 8, 12, and 17. Several genes and quantitative train loci (QTLs) present in the regions identified were appointed; we highlight DMRT2 (doublesex and mab-3 related tran-scription factor 2), IFFO2 (intermediate filament family orphan 2), LNX2 (ligand of numb-protein X 2), MTIF3 (mitochondrial transla-tional initiation factor 3), and TRNAG-CCC (transfer RNA glycine anticodon CCC). The metabolic pathways that can explain part of the phenotypic variation in RWG are related to oxidative stress and muscle control.
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Affiliation(s)
- M H A Santana
- Faculdade de Zootecnia e Engenharia de Alimentos, Pirassununga, SP, Brasil
| | - R C Gomes
- Empresa Brasileira de Pesquisa Agropecuária, Campo Grande, MS, Brasil
| | - Y T Utsunomiya
- Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, SP, Brasil
| | - H H R Neves
- Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, SP, Brasil
| | - F J Novais
- Faculdade de Zootecnia e Engenharia de Alimentos, Pirassununga, SP, Brasil
| | - M N Bonin
- Empresa Brasileira de Pesquisa Agropecuária, Campo Grande, MS, Brasil
| | - H Fukumasu
- Faculdade de Zootecnia e Engenharia de Alimentos, Pirassununga, SP, Brasil
| | - J F Garcia
- Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, SP, Brasil
| | - P A Alexandre
- Faculdade de Zootecnia e Engenharia de Alimentos, Pirassununga, SP, Brasil
| | | | - L L Coutinho
- Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, SP, Brasil
| | - J B S Ferraz
- Faculdade de Zootecnia e Engenharia de Alimentos, Pirassununga, SP, Brasil
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8
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Santana MHA, Utsunomiya YT, Neves HHR, Gomes RC, Garcia JF, Fukumasu H, Silva SL, Leme PR, Coutinho LL, Eler JP, Ferraz JBS. Genome-wide association study for feedlot average daily gain in Nellore cattle (Bos indicus). J Anim Breed Genet 2014; 131:210-6. [PMID: 24906027 DOI: 10.1111/jbg.12084] [Citation(s) in RCA: 20] [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] [Received: 11/13/2013] [Accepted: 01/23/2014] [Indexed: 02/05/2023]
Abstract
The genome-wide association study (GWAS) results are presented for average daily gain (ADG) in Nellore cattle. Phenotype of 720 male Bos indicus animals with information of ADG in feedlots and 354,147 single-nucleotide polymorphisms (SNPs) obtained from a database added by information from Illumina Bovine HD (777,962 SNPs) and Illumina BovineSNP50 (54,609) by imputation were used. After quality control and imputation, 290,620 SNPs remained in the association analysis, using R package Genome-wide Rapid Association using Mixed Model and Regression method GRAMMAR-Gamma. A genomic region with six significant SNPs, at Bonferroni-corrected significance, was found on chromosome 3. The most significant SNP (rs42518459, BTA3: 85849977, p = 9.49 × 10(-8)) explained 5.62% of the phenotypic variance and had the allele substitution effect of -0.269 kg/day. Important genes such as PDE4B, LEPR, CYP2J2 and FGGY are located near this region, which is overlapped by 12 quantitative trait locus (QTLs) described for several production traits. Other regions with markers with suggestive effects were identified in BTA6 and BTA10. This study showed regions with major effects on ADG in Bos indicus in feedlots. This information may be useful to increase the efficiency of selecting this trait and to understand the physiological processes involved in its regulation.
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Affiliation(s)
- M H A Santana
- Faculdade de Zootecnia e Engenharia de Alimentos, USP - Univ. de São Paulo, Pirassununga, Brazil
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9
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Marques VLS, Gomes RC, Viola GR, Maia MM, Durigon GS, Aikawa NE, Silva CA. Pulmonary cryptococcosis in childhood systemic lupus erythematosus and Sjögren syndrome overlap: a rare opportunistic infection. Lupus 2013; 22:1409-12. [DOI: 10.1177/0961203313502859] [Citation(s) in RCA: 7] [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: 11/16/2022]
Abstract
Meningitis is the main manifestation of cryptococcosis in adult systemic lupus erythematosus (SLE) patients, and other organs and systems, such as the lungs, are rarely affected in this fungal infection. To our knowledge, no case of pulmonary cryptococcosis has been described in the pediatric lupus population. Therefore, we report herein one patient with childhood SLE (C-SLE) and Sjögren’s syndrome overlap that presented encapsulated Cryptococcus yeast cells in lung tissue. A 14-year-old girl was diagnosed with C-SLE. At the age of 16 years and 5 months, she presented with fever, cough and dyspnea, without headache, vomiting, and also without signs of meningeal irritation or other clinical manifestations. She was being treated with mycophenolate mofetil, hydroxychloroquine and prednisone. Chest radiography and chest computer tomography showed a single nodule in the left posterior apex and three nodular lesions in the left hemithorax respectively. Bronchoalveolar lavage and transbronchial biopsy were normal and without isolation of bacteria or fungi. Voriconazole was empirically introduced for 21 days. Fifteen days after the first biopsy, she underwent open thoracotomy with surgical left lung biopsy and was diagnosed with pulmonary cryptococcosis. Voriconazole was replaced with oral fluconazole and this antifungal therapy was maintained with improvement of clinical manifestations and without marked alteration of radiological images. In conclusion, we report the first case of pulmonary cryptococcosis in Sjögren’s and C-SLE patient with a satisfactory clinical response to antifungal therapy. Fungal infections should be excluded in the presence of lung nodules and etiological identification is required for proper treatment.
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Affiliation(s)
- VLS Marques
- Pediatric Rheumatology Unit, Faculdade de Medicina da Universidade São Paulo, Brazil
| | - RC Gomes
- Pediatric Rheumatology Unit, Faculdade de Medicina da Universidade São Paulo, Brazil
| | - GR Viola
- Pediatric Rheumatology Unit, Faculdade de Medicina da Universidade São Paulo, Brazil
| | - MM Maia
- Pediatric Rheumatology Unit, Faculdade de Medicina da Universidade São Paulo, Brazil
| | - GS Durigon
- Pediatric Infectology Unit, Faculdade de Medicina da Universidade São Paulo, Brazil
| | - NE Aikawa
- Pediatric Rheumatology Unit, Faculdade de Medicina da Universidade São Paulo, Brazil
- Division of Rheumatology, Faculdade de Medicina da Universidade São Paulo, Brazil
| | - C Artur Silva
- Pediatric Rheumatology Unit, Faculdade de Medicina da Universidade São Paulo, Brazil
- Division of Rheumatology, Faculdade de Medicina da Universidade São Paulo, Brazil
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10
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Gomes RC, Silva SL, Carvalho ME, Rezende FM, Pinto LFB, Santana MHA, Stella TR, Meirelles FV, Rossi Júnior P, Leme PR, Ferraz JBS. Protein synthesis and degradation gene SNPs related to feed intake, feed efficiency, growth, and ultrasound carcass traits in Nellore cattle. Genet Mol Res 2013; 12:2923-36. [PMID: 24065648 DOI: 10.4238/2013.august.12.8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [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
We looked for possible associations of SNPs in genes related to protein turnover, with growth, feed efficiency and carcass traits in feedlot Nellore cattle. Purebred Nellore bulls and steers (N = 290; 378 ± 42 kg body weight, 23 months ± 42 days old) were evaluated for daily feed intake, body weight gain (BWG), gross feed efficiency, feed conversion ratio, partial efficiency of growth, residual feed intake (RFI), ultrasound backfat, rump fat, and ribeye area. Genotypes were obtained for SNPs in the growth hormone receptor (GHR-1 and GHR-2); calpain (CAPN4751); calpastatin (UoGCAST); ubiquitin-conjugating enzyme 2I (UBE2I-1 and UBE2I-2); R3H domain containing 1 (R3HDM1-1, -2, -3, and -4), ring finger protein 19 (RNF19); proteasome 26S subunit, non-ATPase, 13 (PSMD13); ribosomal protein, large, P2 (RPLP2); and isoleucine-tRNA synthetase 2, mitochondrial (IARS2) genes. Allelic substitution, additive and dominant effects were tested and molecular breeding values were computed. CAPN4751, GHR-1 and -2, IARS2, R3HDM1-4, and UoGCAST were found to be normally segregating polymorphisms. Additive and dominance effects were observed on BWG, feed efficiency and carcass traits, although dominant effects predominated. Significant allelic substitution effects were observed for CAPN4751, GHR-1 and -2, and UoGCAST on BWG, gross feed efficiency, RFI, and carcass traits, under single- or multiple-marker analyses. Correlations between molecular breeding values and phenotypes were low, excepted for RFI, based on allelic substitution estimates obtained by stepwise linear regression. We conclude that SNPs in genes related to protein turnover are related to economically important traits in Nellore cattle.
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Affiliation(s)
- R C Gomes
- Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brasil
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11
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Guenka LC, Gomes RC, Melo VL, Kitanishi CRR, Pereira PS, França SC, Couto LB, Beleboni RO. Anti-inflammatory and anti-nociceptive effects of Zeyheria montana (Bignoniaceae) ethanol extract. Mem Inst Oswaldo Cruz 2009; 103:768-72. [PMID: 19148414 DOI: 10.1590/s0074-02762008000800004] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2008] [Accepted: 11/28/2008] [Indexed: 11/22/2022] Open
Abstract
In this work, the analgesic and anti-inflammatory activities of Zeyheria montana Mart. ethanol leaf extract were investigated at doses of 75, 150 and 300 mg/kg body weight. In the analgesic assay, against a chemical stimulus in mice, acetic acid-induced writhes were significantly inhibited by the extract at doses of 75 mg/kg (67.27%), 150 mg/kg (49.38%) and 300 mg/kg (82.87%). Also, a vigorous decrease in hyperalgesia was observed when measured after 2 h and 6 h of lipopolysaccharide stimulation of rats for all doses of extract tested. Z. montana extract, at doses of 75 and 300 mg/kg, caused very slight central analgesia in rats submitted to thermal stimulus, particularly noticeable at 30 min following treatment. The anti-inflammatory activity of Z. montana extract on carrageenan-induced oedema in rats was evaluated. The oedema development, measured at 180 min following carrageenan intraplantar injection, was significantly reduced by all tested doses: 75 mg/kg (33.30%), 150 mg/kg (45.80%) and 300 mg/kg (75.00%). The LD50 value was greater than 2000 mg/kg. These results demonstrated that the ethanol extract from Z. montana leaf possesses anti-nociceptive and anti-inflammatory activities, which could be of relevance for the pharmacological control of pain and inflammatory processes.
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Affiliation(s)
- L C Guenka
- Unidade de Biotecnologia, Universidade de Ribeirão Preto, Ribeirão Preto, SP, Brasil
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12
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Ballou MA, Gomes RC, Juchem SO, DePeters EJ. Effects of dietary supplemental fish oil during the peripartum period on blood metabolites and hepatic fatty acid compositions and total triacylglycerol concentrations of multiparous Holstein cows. J Dairy Sci 2009; 92:657-69. [PMID: 19164678 DOI: 10.3168/jds.2008-1196] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The objectives were to evaluate the effects of dietary fish oil on plasma metabolite, hepatic fatty acid composition, and total triacylglycerol concentrations. Multiparous Holstein cows (n = 42) were completely randomized to 1 of 3 treatments at 3 wk prepartum. Treatments were no supplemental lipid or supplemental lipid from either Energy Booster (Milk Specialties Co., Dundee, IL) or fish oil. Treatment diets were fed from -21 d relative to expected date of parturition until 10 d postpartum. Treatments were fed as a bolus before the a.m. feeding. The dose of lipid fed during the prepartum period was 250 g, whereas approximately 0.92% of the previous day's dry matter intake was supplemented postpartum. Blood was collected 3 times weekly for determination of plasma metabolites. Liver biopsies were performed at 21 and 10 d before expected date of parturition and 1 and 14 d after parturition to determine fatty acid compositions and total triacylglycerol concentrations. Dry matter intake, milk yield, and loss of body weight or body condition score were not affected by supplementing the diet with lipid or by the source of lipid. Supplemental lipid tended to increase plasma glucose and decrease nonesterified fatty acids during the postpartum period. Furthermore, plasma beta-hydroxybutyrate was reduced during the postpartum period in the lipid-supplemented treatments. However, source of supplemental lipid had no influence on any blood metabolite. Supplemental fish oil altered the fatty acid composition of liver phospholipids and triacylglycerols, decreasing total saturated fatty acids and increasing total n-3 and long-chain polyunsaturated fatty acids (>20 carbon fatty acids). Despite the altered fatty acid composition, hepatic total triacylglycerol concentrations were unaffected by supplemental fish oil. Furthermore, the improved metabolic profile following lipid supplementation did not decrease hepatic total triacylglycerol concentrations.
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Affiliation(s)
- M A Ballou
- Department of Animal Science and Nutritional Biology Graduate Group, University of California, Davis 95616, USA.
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13
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Souza RF, Soares RMA, Nascimento RP, Coelho RRR, Gomes RC. Effect of different carbon sources on endochitinase production by Colletotrichum gloeosporioides. Curr Microbiol 2005; 51:16-21. [PMID: 15971091 DOI: 10.1007/s00284-005-4506-9] [Citation(s) in RCA: 9] [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: 11/08/2004] [Accepted: 12/31/2004] [Indexed: 11/25/2022]
Abstract
The present work analyzes the production of endochitinase by Colletotrichum gloeosporioides, a phytopathogenic fungus, using six different carbon sources and two pH values. For quantitative assay of endochitinase activity in solution, the synthetic substrate 4-methylumbelliferyl-beta-D-N,N',N"-triacetylchitotrioside was used. The major productions were obtained at pH 7.0 and 9.0, when colloidal chitin and glucose were used, whereas xylose and lactose were not good carbon sources. When testing different concentrations of colloidal chitin, glucose and glucosamine, colloidal chitin 0.5% was the best substrate, giving values of 2.4 U at the fifth day. When using glucose, best production occurred at 0.3% concentration, after 5 days growth, with values of 1.31 U. Endochitinase production was markedly decreased in high levels of glucose and in all glucosamine concentrations tested. SDS-PAGE co-polymerized with glycol-chitin analysis showed three major activity bands of 200, 100, and 95 kDa, when incubated at 50 degrees C.
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Affiliation(s)
- R F Souza
- Departamento de Microbiologia Geral, Instituto de Microbiologia Professor Paulo de Góes (IMPPG), CCS, Bloco I,Universidade Federal do Rio Janeiro (UFRJ), Ilha do Fundão, 21941-590, Rio de Janeiro, RJ, Brazil.
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14
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Semêdo LTAS, Gomes RC, Linhares AA, Duarte GF, Nascimento RP, Rosado AS, Margis-Pinheiro M, Margis R, Silva KRA, Alviano CS, Manfio GP, Soares RMA, Linhares LF, Coelho RRR. Streptomyces drozdowiczii sp. nov., a novel cellulolytic streptomycete from soil in Brazil. Int J Syst Evol Microbiol 2005; 54:1323-1328. [PMID: 15280309 DOI: 10.1099/ijs.0.02844-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An actinomycete strain, isolated from a Mata Atlântica soil sample, showing cellulolytic activity was subjected to polyphasic taxonomic characterization to determine its identity. Strain M7aT presented morphological and chemotaxonomic characteristics consistent with its assignment to the genus Streptomyces. Phylogenetic analysis of its 16S rDNA sequence revealed that the strain differed from described streptomycetes available in the public databases; the most closely related species was Streptomyces laceyi, with 98.4% nucleotide similarity. It also differed from other cellulolytic strains in its phenotypic characteristics. It is therefore proposed that strain M7aT, a cellulolytic strain with biotechnological potential, represents a novel species, named Streptomyces drozdowiczii sp. nov. The type strain is M7aT (=CBMAI 0498T=CIP 107837T=NRRL B-24297T).
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Affiliation(s)
- L T A S Semêdo
- Instituto de Microbiologia Prof. Paulo de Góes, Universidade do Brasil, UFRJ, CCS, Bloco I, Ilha do Fundão, Rio de Janeiro (RJ), 21941-590, Brazil
| | - R C Gomes
- Instituto de Microbiologia Prof. Paulo de Góes, Universidade do Brasil, UFRJ, CCS, Bloco I, Ilha do Fundão, Rio de Janeiro (RJ), 21941-590, Brazil
| | - A A Linhares
- Instituto de Microbiologia Prof. Paulo de Góes, Universidade do Brasil, UFRJ, CCS, Bloco I, Ilha do Fundão, Rio de Janeiro (RJ), 21941-590, Brazil
| | - G F Duarte
- Instituto de Microbiologia Prof. Paulo de Góes, Universidade do Brasil, UFRJ, CCS, Bloco I, Ilha do Fundão, Rio de Janeiro (RJ), 21941-590, Brazil
| | - R P Nascimento
- Instituto de Microbiologia Prof. Paulo de Góes, Universidade do Brasil, UFRJ, CCS, Bloco I, Ilha do Fundão, Rio de Janeiro (RJ), 21941-590, Brazil
| | - A S Rosado
- Instituto de Microbiologia Prof. Paulo de Góes, Universidade do Brasil, UFRJ, CCS, Bloco I, Ilha do Fundão, Rio de Janeiro (RJ), 21941-590, Brazil
| | - M Margis-Pinheiro
- Instituto de Biologia, Universidade do Brasil, UFRJ, CCS, Bloco I, Ilha do Fundão, Rio de Janeiro (RJ), 21941-590, Brazil
| | - R Margis
- Instituto de Biologia, Universidade do Brasil, UFRJ, CCS, Bloco I, Ilha do Fundão, Rio de Janeiro (RJ), 21941-590, Brazil
| | - K R A Silva
- Instituto de Microbiologia Prof. Paulo de Góes, Universidade do Brasil, UFRJ, CCS, Bloco I, Ilha do Fundão, Rio de Janeiro (RJ), 21941-590, Brazil
| | - C S Alviano
- Instituto de Microbiologia Prof. Paulo de Góes, Universidade do Brasil, UFRJ, CCS, Bloco I, Ilha do Fundão, Rio de Janeiro (RJ), 21941-590, Brazil
| | - G P Manfio
- CPQBA/UNICAMP, CP 6171 Campinas (SP), 13081-970, Brazil
| | - R M A Soares
- Instituto de Microbiologia Prof. Paulo de Góes, Universidade do Brasil, UFRJ, CCS, Bloco I, Ilha do Fundão, Rio de Janeiro (RJ), 21941-590, Brazil
| | - L F Linhares
- Instituto de Microbiologia Prof. Paulo de Góes, Universidade do Brasil, UFRJ, CCS, Bloco I, Ilha do Fundão, Rio de Janeiro (RJ), 21941-590, Brazil
| | - R R R Coelho
- Instituto de Microbiologia Prof. Paulo de Góes, Universidade do Brasil, UFRJ, CCS, Bloco I, Ilha do Fundão, Rio de Janeiro (RJ), 21941-590, Brazil
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15
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Souza RF, Gomes RC, Coelho RRR, Alviano CS, Soares RMA. Purification and characterization of an endochitinase produced by Colletotrichum gloeosporioides. FEMS Microbiol Lett 2003; 222:45-50. [PMID: 12757945 DOI: 10.1016/s0378-1097(03)00220-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
The phytopathogenic fungus Colletotrichum gloeosporioides was analyzed for chitinase activity, the best production occurring at the fourth day. A 43 kDa endochitinase with specific activity of 413 U microg(-1) protein was purified corresponding to a 75% yield. The optima of temperature and pH for the enzyme were 50 degrees C and pH 7.0, respectively. The enzyme showed a high stability at 50 degrees C and pH 7.0. Values of pH from 5.0 up to 7.0 gave, at least, 50% of maximum activity, suggesting a biotechnological application. Further studies are in progress to determine the possible use of this endochitinase in biological control.
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Affiliation(s)
- R F Souza
- Departamento de Microbiologia Geral, Instituto de Microbiologia Prof Paulo de Góes (IMPPG), Centro de Ciências da Saúde, Universidade do Brasil, Ilha do Fundão, CEP 21941-590, Rio de Janeiro, RJ, Brazil
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16
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Gomes RC, Sêmedo LT, Soares RM, Linhares LF, Ulhoa CJ, Alviano CS, Coelho RR. Purification of a thermostable endochitinase from Streptomyces RC1071 isolated from a cerrado soil and its antagonism against phytopathogenic fungi. J Appl Microbiol 2001; 90:653-61. [PMID: 11309080 DOI: 10.1046/j.1365-2672.2001.01294.x] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS The chitinolytic activity of an actinomycete, isolated from a tropical acidic ferrasol (FAO) under cerrado (savanna) vegetation, is reported. METHODS AND RESULTS Selection of the strain was based on spot inoculation on solid colloidal chitin medium. The use of chemotaxonomic, morphological and physiological procedures placed it in the Streptomyces genus, but identification to species level could not be achieved. A protein with endochitinase activity was isolated and purified from the supernatant fluid by concentration, precipitation, hydrophobic interaction, gel filtration and adsorption procedures. The molecular size of the purified chitinase was estimated by gel filtration to be 70 kDa, and its pI was 6.1. The enzyme had temperature and pH optima of 40 degrees C and 8.0, respectively, and showed thermal (30-70 degrees C) and pH (4-9) stabilities. Antifungal activity of the selected strain was observed following in vitro experiments using growing cells, crude extract or the purified endochitinase, and by detecting growth inhibition of the tested phytopathogenic fungi. CONCLUSION Strain Streptomyces RC 1071 could not be placed into any known species, suggesting a new taxon. The purified endochitinase presented similar molecular weight, optimum temperature and pH activity, and stability of other endochitinolytic enzymes reported in the literature. In all three in vitro experiments performed, inhibition of growth of the phytopathogenic fungi used as test organisms was observed. SIGNIFICANCE AND IMPACT OF THE STUDY Some of the endochitinase characteristics such as thermal stability, as well as pH tolerance, are very interesting for biotechnological purposes. In addition, due to its antifungal activity, Streptomyces RC 1071 seems promising for use in biological control.
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Affiliation(s)
- R C Gomes
- Instituto de Microbiologia Prof. Paulo de Góes, Ilha do Fundão, CEP, 21941-590, Rio de Janeiro, RJ, Brazil
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Semêdo LT, Linhares AA, Gomes RC, Manfio GP, Alviano CS, Linhares LF, Coelho RR. Isolation and characterization of actinomycetes from Brazilian tropical soils. Microbiol Res 2001; 155:291-9. [PMID: 11297360 DOI: 10.1016/s0944-5013(01)80007-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Actinomycetes have been isolated from three Brazilian tropical soils. The dispersion and differential centrifugation procedure revealed count values 1.5 to 5.0 times greater than those obtained by the conventional dilution plate technique for all soils and media tested. Eighteen strains, promising for biotechnological applications, were submitted to chemotaxonomic procedures and numerical taxonomy for identification. Two were identified as Amycolatopsis orientalis, one as Streptomyces misakiensis, and two tentatively included or associated to S. chromofuscus and S. griseoruber. The others, all belonging to the Streptomyces genus, could not be fitted into any known species, and were arranged by the UPGMA analysis for classification, as an isolated group. This suggests that the actinomycetes in tropical soils may represent a vast unexplored resource for biotechnology.
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Affiliation(s)
- L T Semêdo
- Instituto de Microbiologia Prof. Paulo de Góes, Universidade Federal do Rio de Janeiro, CCS, Ilha do Fundão, Brazil
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18
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Semêdo LT, Gomes RC, Bon EP, Soares RM, Linhares LF, Coelho RR. Endocellulase and exocellulase activities of two Streptomyces strains isolated from a forest soil. Appl Biochem Biotechnol 2000; 84-86:267-76. [PMID: 10849795 DOI: 10.1385/abab:84-86:1-9:267] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Two Streptomyces strains, M7a and M23, from a Brazilian forest soil were evaluated for the cellulase production of their supernatants after growth in a microcrystalline cellulose medium, using carboxymethylcellulose and filter paper as substrates at different temperatures and pH values. Endoglucanase and exoglucanase activities were compared to a commercial Trichoderma reesei cellulase using fluorogenic conjugated substrates. Similar specific activities were observed for the enzyme preparations of strain M23 and T. reesei. For M7a the activities were about seven times higher than those obtained for T. reesei. Extracellular or cell-associated cellobiase activities were not detected in both strains.
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Affiliation(s)
- L T Semêdo
- Instituto de Microbiologia Prof. Paulo de Góes-UFRJ, CCS, Rio de Janeiro, Brazil
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Gomes RC, Semêdo LT, Soares RM, Alviano CS, Linhares LF, Coelho RR. Chitinolytic activity of actinomycetes from a cerrado soil and their potential in biocontrol. Lett Appl Microbiol 2000. [PMID: 10736018 DOI: 10.1046/j.1472-765x.2000.00687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The crude enzyme extracts from five actinomycetes selected from a cerrado soil presented very good endochitinolytic activity when compared to a commercial chitinase. Exochitinase and chitobiase activities were also detected. They were identified as Streptomyces, but could not be characterized to species level, probably corresponding to new ones. The crude extracts, obtained from growth on fungal mycelium plus chitin of three of the strains, have shown a very pronounced activity against phytopathogenic fungi. In tests using growing cells, all five strains were active. These data suggest that these strains are potential biocontrol agents.
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Affiliation(s)
- R C Gomes
- Institute of Microbiology, Federal University of Rio de Janeiro, Brazil
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20
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Gomes RC, Semêdo LT, Soares RM, Alviano CS, Linhares LF, Coelho RR. Chitinolytic activity of actinomycetes from a cerrado soil and their potential in biocontrol. Lett Appl Microbiol 2000; 30:146-50. [PMID: 10736018 DOI: 10.1046/j.1472-765x.2000.00687.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.5] [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: 11/20/2022]
Abstract
The crude enzyme extracts from five actinomycetes selected from a cerrado soil presented very good endochitinolytic activity when compared to a commercial chitinase. Exochitinase and chitobiase activities were also detected. They were identified as Streptomyces, but could not be characterized to species level, probably corresponding to new ones. The crude extracts, obtained from growth on fungal mycelium plus chitin of three of the strains, have shown a very pronounced activity against phytopathogenic fungi. In tests using growing cells, all five strains were active. These data suggest that these strains are potential biocontrol agents.
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Affiliation(s)
- R C Gomes
- Institute of Microbiology, Federal University of Rio de Janeiro, Brazil
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Galvão LC, Gomes RC, Ramos AM. [Celiac disease: report of 20 cases in Rio Grande do Norte, Brazil]. Arq Gastroenterol 1992; 29:28-33. [PMID: 1307201] [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: 12/26/2022]
Abstract
This paper shows that celiac disease exists in Northeast of Brazil and can be one of the causes of malnutrition in the State of Rio Grande do Norte. The authors present a study of 20 cases of celiac disease in the State of Rio Grande do Norte where there had not been any cases diagnosed before 1978. Ethnic aspects in the State seem to have influenced the occurrence of the disease since the European miscigenation has been more frequent than that of negroes and local indians. The cases are analysed in this paper and correlated with the literature.
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Affiliation(s)
- L C Galvão
- Departamento de Puericultura, Faculdade de Medicina, Ribeirão Preto da Universidade de São Paulo
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