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Ferraro AC, França AC, Machado CMM, Aguiar FR, Oliveira LL, Braga Neto AM, Oliveira RG. Commercial characteristics of coffee seedlings produced with different sources of phosphorus and plant growth-promoting bacteria. BRAZ J BIOL 2023; 83:e270262. [PMID: 37075429 DOI: 10.1590/1519-6984.270262] [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: 12/08/2022] [Accepted: 03/30/2023] [Indexed: 04/21/2023] Open
Abstract
Considered the economic engine of many countries, the coffee culture represents an important component of the agricultural chain in Brazil. The growing values of commercialization, planting areas, and crop productivity require the acquisition of quality seedlings, which must receive adequate nutritional support through efficient fertilizers. Slow and controlled-release fertilizers, such as organominerals, gain prominence when it comes to increasing efficiency in the use of phosphorus, as well as plant growth-promoting bacteria (PGPB) with phosphate solubilizing characteristics. This study aimed to evaluate the effect of different sources of mineral and organomineral fertilizers, inoculated and non-inoculated with PGPB on the quality parameters of coffee seedlings. In general, the P sources used in the experiment positively interfered with the development of coffee seedlings. This proves that there is a need for nutritional supplementation for the good development of the seedlings. Among the sources used, the organomineral in granulated form showed better performance in coffee seedlings' growth and physiological parameters, proving to be a viable alternative to commonly used fertilizers. The addition of PGPB showed a significant advantage for seedling quality variables.
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Affiliation(s)
- A C Ferraro
- Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, Departamento de Agronomia - DAG, Diamantina, MG, Brasil
- Instituto Federal de Educação, Ciência e Tecnologia de Minas Gerais - IFMG, São João Evangelista, MG, Brasil
| | - A C França
- Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, Departamento de Agronomia - DAG, Diamantina, MG, Brasil
| | - C M M Machado
- Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, Departamento de Agronomia - DAG, Diamantina, MG, Brasil
| | - F R Aguiar
- Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, Departamento de Agronomia - DAG, Diamantina, MG, Brasil
| | - L L Oliveira
- Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, Departamento de Agronomia - DAG, Diamantina, MG, Brasil
| | - A M Braga Neto
- Instituto Federal de Educação, Ciência e Tecnologia de Minas Gerais - IFMG, São João Evangelista, MG, Brasil
| | - R G Oliveira
- Instituto Federal de Educação, Ciência e Tecnologia de Minas Gerais - IFMG, São João Evangelista, MG, Brasil
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Oliveira JM, Destro ALF, Freitas MB, Oliveira LL. How do pesticides affect bats? – A brief review of recent publications. BRAZ J BIOL 2021; 81:499-507. [DOI: 10.1590/1519-6984.225330] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 12/17/2019] [Indexed: 02/08/2023] Open
Abstract
Abstract Increased agricultural production has been increased use of pesticides worldwide, which poses a threat to both human and environmental health. Recent studies suggest that several non-target organisms, from bees to mammals, show a wide variety of toxic effects of pesticides exposure, including impaired behavior, development and reproduction. Among mammals, bats are usually a neglected taxon among ecotoxicological studies, although they play important ecological and economical roles in forest ecosystems and agriculture through to seed dispersal and insect population control. Considering their wide variety of food habits, bats are exposed to environmental pollutants through food or water contamination, or through direct skin contact in their roosting areas. In order to better understand the risk posed by pesticides to bats populations, we compiled studies that investigated the main toxicological effects of pesticides in bats, aiming at contributing to discussion about the environmental risks associated with the use of pesticides.
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Schwarz DGG, Shoyama FM, Oliveira LL, Sreevatsan S, Moreira MAS. Rapid baso-apical translocation of Mycobacterium avium ssp. paratuberculosis in mammary epithelial cells in the presence of Escherichia coli. J Dairy Sci 2018; 101:6287-6295. [PMID: 29705415 DOI: 10.3168/jds.2017-13945] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 02/20/2018] [Indexed: 01/06/2023]
Abstract
Infection of mammary gland cells with bacterial pathogens begins with adhesion, invasion, and persistence within the cells or systemic distribution. Some bacteria, such as Escherichia coli, are known to causes bovine mastitis, resulting in acute proinflammatory responses in the mammary tissue. Mycobacterium avium ssp. paratuberculosis (MAP), the etiological agent of paratuberculosis, is able to spread to distant organs after crossing intestinal cells, reaching the mammary gland and potentially being released in milk, infecting calves during suckling. Its exit from systemic sites may be influenced by preexisting inflammation such as that caused by E. coli mastitis. Interactions between E. coli and MAP in mammary epithelial cells have not yet been described. In this study, we posited that E. coli-infected bovine mammary epithelial cells would facilitate baso-apical translocation of MAP in an ex vivo model. We showed that the presence of E. coli in a bovine mammary epithelial cell line (MAC-T) increased baso-apical translocation of MAP to the apical side of the cells. Levels were significantly higher 30 min post-infection and decreased at 120 min post-infection. Cells previously infected with E. coli and MAP or with E. coli alone showed a significant increase in IL1B mRNA expression at 120 min. We detected no significant expression of p38 mitogen-activated protein kinase (mapkp38) or IL10, regardless of treatment. Thereby, the presence of E. coli in MAC-T cells alters the translocation of MAP through epithelial cells, enabling its rapid translocation to the cellular surface. Expression of IL1B was shown to influence the apical-basal translocation of MAP at 120 min. Findings from the current study suggest that MAP translocation into milk is likely enhanced by inflammatory states such as those induced during E. coli mastitis. This is the first report demonstrating the effect of E. coli under MAP coinfection in bovine mammary epithelial cells under experimental conditions.
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Affiliation(s)
- D G G Schwarz
- Department of Veterinary, Universidade Federal de Viçosa (UFV), CEP 36570-900, Viçosa, Minas Gerais, Brazil
| | - F M Shoyama
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing 48824
| | - L L Oliveira
- Department of General Biology, Universidade Federal de Viçosa (UFV), CEP 36570-900, Viçosa, Minas Gerais, Brazil
| | - S Sreevatsan
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing 48824
| | - M A S Moreira
- Department of Veterinary, Universidade Federal de Viçosa (UFV), CEP 36570-900, Viçosa, Minas Gerais, Brazil.
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Nascimento CF, Oliveira LL, Silva NCD, Santos FD, Holder VB, Pettigrew JE, Siqueira GR, Resende FDD. 649 Nellore metabolism receiving exogenous amylase in high-concentrate diets. J Anim Sci 2017. [DOI: 10.2527/asasann.2017.649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Silva JA, Carvalho SP, Bruzi AT, Guimarães RJ, Oliveira LL, Simões LC. Genetic diversity among coffee tree progenies Big Coffee VL based on growth traits and production. Genet Mol Res 2016; 15:gmr-15-04-gmr.15049066. [PMID: 27886344 DOI: 10.4238/gmr15049066] [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
In a coffee plantation of a coffee 'Acaiá' cultivar (Coffea arabica), on the Midwest of Minas Gerais in Capitólio city, a different kind of coffee tree was found (1989), possibly due to a mutation. It presented larger leaves and grains than those of conventional coffee trees and was named as "Big Coffee VL." The aim of this study was to estimate the genetic diversity of Big Coffee VL progenies cultivated at Universidade Federal de Lavras, by evaluating growth and production traits, based on genetic distances and clusters. The experiment was established in a lattice design with 100 progenies of this coffee tree and 23 repetitions. Traits evaluated were vigor, plant height, stem diameter, node number of plagiotropic branches, pair numbers of plagiotropic branches, and productivity. Genetic divergence was evaluated by multivariate procedures: Mahalanobis generalized distance, clustering methods, and principal component analysis. Genetic distances were estimated using Mahalanobis distance and presented variations from 0.04 to 18.70. The most similar progenies were P23 and P29 and the most dissimilar progenies were G8 and P14. The progenies were divided into three groups, with P14 present as an isolated group. Thus, it was possible to observe the existence of genetic variability among the progenies of Big Coffee VL, which can be used in breeding programs to increase grain size. Progenies G8 and P14 presented the highest genetic distance, and were the most suitable for future integration of crossings in plant breeding programs.
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Affiliation(s)
- J A Silva
- Universidade Federal de Lavras, Lavras, MG, Brasil
| | - S P Carvalho
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - A T Bruzi
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - R J Guimarães
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - L L Oliveira
- Universidade Federal de Lavras, Lavras, MG, Brasil
| | - L C Simões
- Universidade Federal de Lavras, Lavras, MG, Brasil
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Nascimento CF, Oliveira LL, Amancio WDC, Silva NCD, Santos FD, Gonçalves PH, Siqueira GR, Resende FDD. 1350 Use of Aspergillus oryzae extract containing α-amylase activity in finishing diets for Nellore cattle. J Anim Sci 2016. [DOI: 10.2527/jam2016-1350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Rocha DM, Caldas AP, Oliveira LL, Bressan J, Hermsdorff HH. Saturated fatty acids trigger TLR4-mediated inflammatory response. Atherosclerosis 2015; 244:211-5. [PMID: 26687466 DOI: 10.1016/j.atherosclerosis.2015.11.015] [Citation(s) in RCA: 298] [Impact Index Per Article: 33.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 10/16/2015] [Accepted: 11/16/2015] [Indexed: 12/11/2022]
Abstract
Toll-like receptors (TLR) mediate infection-induced inflammation and sterile inflammation by endogenous molecules. Among the TLR family, TLR4 is the best understood. However, while its downstream signaling pathways have been well defined, not all ligands of TLR4 are currently known. Current evidence suggests that saturated fatty acids (SFA) act as non-microbial TLR4 agonists, and trigger its inflammatory response. Thus, our present review provides a new perspective on the potential mechanism by which SFAs could modulate TLR4-induced inflammatory responses: (1) SFAs can be recognized by CD14-TLR4-MD2 complex and trigger inflammatory pathways, similar to lipopolysaccharide (LPS). (2) SFAs lead to modification of gut microbiota with an overproduction of LPS after a high-fat intake, enhancing this natural TLR4 ligand. (3) In addition, this metabolic endotoxemia leads to an oxidative stress thereby producing atherogenic lipids - oxLDL and oxidized phospholipids - which trigger CD36-TLR4-TLR6 inflammatory response. (4) Also, the high SFA consumption increases the lipemia and the mmLDL and oxLDL formation through oxidative modifications of LDL. The mmLDL, unlike oxLDL, is involved in activation of the CD14-TLR4-MD2 inflammatory pathway. Those molecules can induce TLR4 inflammatory response by MyD88-dependent and/or MyD88-independent pathways that, in turn, promotes the expression of proinflammatory transcript factors such as factor nuclear kappa B (NF-κB), which plays a crucial role in the induction of inflammatory mediators (cytokines, chemokines, or costimulatory molecules) implicated in the development and progression of many chronic diseases.
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Affiliation(s)
- D M Rocha
- Department of Nutrition and Health, Universidade Federal de Viçosa, Viçosa, Brazil.
| | - A P Caldas
- Department of Nutrition and Health, Universidade Federal de Viçosa, Viçosa, Brazil.
| | - L L Oliveira
- Department of General Biology, Universidade Federal de Viçosa, Viçosa, Brazil.
| | - J Bressan
- Department of Nutrition and Health, Universidade Federal de Viçosa, Viçosa, Brazil.
| | - H H Hermsdorff
- Department of Nutrition and Health, Universidade Federal de Viçosa, Viçosa, Brazil.
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Oliveira LL, Costa RB, Sakamoto IK, Duarte ICS, Silva EL, Varesche MBA. Las degradation in a fluidized bed reactor and phylogenetic characterization of the biofilm. Braz J Chem Eng 2013. [DOI: 10.1590/s0104-66322013000300010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Dias RS, Eller MR, Duarte VS, Pereira ÂL, Silva CC, Mantovani HC, Oliveira LL, de A. M Silva E, De Paula SO. Use of phages against antibiotic-resistant Staphylococcus aureus isolated from bovine mastitis1. J Anim Sci 2013; 91:3930-9. [DOI: 10.2527/jas.2012-5884] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- R. S. Dias
- Laboratory of Molecular Immunovirology, Department of General Biology, Federal University of Viçosa, Viçosa, Brazil
| | - M. R. Eller
- Laboratory of Molecular Immunovirology, Department of General Biology, Federal University of Viçosa, Viçosa, Brazil
| | - V. S. Duarte
- Laboratory of Molecular Immunovirology, Department of General Biology, Federal University of Viçosa, Viçosa, Brazil
| | - Â. L. Pereira
- Laboratory of Molecular Immunovirology, Department of General Biology, Federal University of Viçosa, Viçosa, Brazil
| | - C. C. Silva
- Department of Microbiology, Federal University of Viçosa, Viçosa, Brazil
| | - H. C. Mantovani
- Laboratory of Anaerobic Microorganisms, Department of Microbiology, Federal University of Viçosa, Viçosa, Brazil
| | - L. L. Oliveira
- Laboratory of Molecular Immunovirology, Department of General Biology, Federal University of Viçosa, Viçosa, Brazil
| | - E. de A. M Silva
- Laboratory of Molecular Immunovirology, Department of General Biology, Federal University of Viçosa, Viçosa, Brazil
| | - S. O. De Paula
- Laboratory of Molecular Immunovirology, Department of General Biology, Federal University of Viçosa, Viçosa, Brazil
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Oliveira LL, Costa RB, Duarte ICS, Luiz Silva E, Varesche MBA. Anaerobic degradation of linear alkylbenzene sulfonate in fluidized bed reactor. Braz J Chem Eng 2010. [DOI: 10.1590/s0104-66322010000400005] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Cardoso CR, Favoreto S, Oliveira LL, Vancim JO, Barban GB, Ferraz DB, Silva JS. Oleic acid modulation of the immune response in wound healing: a new approach for skin repair. Immunobiology 2010; 216:409-15. [PMID: 20655616 DOI: 10.1016/j.imbio.2010.06.007] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Revised: 06/24/2010] [Accepted: 06/27/2010] [Indexed: 10/19/2022]
Abstract
Injury triggers inflammatory responses and tissue repair. Several treatments are currently in use to accelerate healing; however, more efficient formulations are still needed for specific injuries. Since unsaturated fatty acids modulate immune responses, we aimed to evaluate their therapeutic effects on wound healing. Skin wounds were induced in BALB/c mice and treated for 5 days with n-3, n-9 fatty acids or vehicle (control). n-9 treated mice presented smaller wounds than control and n-3 at 120 h post-surgery (p.s.). Collagen III mRNA, TIMP1 and MMP9 were significantly elevated in n-9 group compared to n-3 or vehicle at 120 h p.s. Among the inflammatory mediators studied we found that IL-10, TNF-α and IL-17 were also higher in n-9 treated group compared to n-3 or vehicle at 120 h p.s. Interestingly, COX2 had decreased expression on wound tissue treated with n-9. Inflammatory infiltrate analysis revealed diminished frequency of CD4(+), CD8(+) and CD11b(+) cells in n-9 wounds at 24 and 120 h p.s., which was not related to cell death, since in vitro apoptosis experiments did not show any cell damage after fatty acids administration. These results suggested that unsaturated fatty acids, specifically n-9, modulate the inflammation in the wound and enhance reparative response in vivo. n-9 may be a useful tool in the treatment of cutaneous wounds.
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Affiliation(s)
- C R Cardoso
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto - USP, Av. Bandeirantes 3900, 14049-900 Ribeirão Preto, SP, Brazil
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12
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Duarte ICS, Oliveira LL, Saavedra NK, Fantinatti-Garboggini F, Menezes CBA, Oliveira VM, Varesche MBA. Treatment of linear alkylbenzene sulfonate in a horizontal anaerobic immobilized biomass reactor. Bioresour Technol 2010; 101:606-612. [PMID: 19751971 DOI: 10.1016/j.biortech.2008.10.065] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2007] [Revised: 10/14/2008] [Accepted: 10/15/2008] [Indexed: 05/28/2023]
Abstract
Linear alkylbenzene sulfonate (LAS) is an anionic surfactant widely used to manufacture detergents and found in domestic and industrial wastewater. LAS removal was evaluated in a horizontal anaerobic immobilized biomass reactor. The system was filled with polyurethane foam and inoculated with sludge that was withdrawn from an up flow anaerobic sludge blanket reactor that is used to treat swine wastewater. The reactor was fed with easily degradable substrates and a solution of commercial LAS for 313 days. The hydraulic retention time applied was 12h. The system was initially operated without detergent and resulted to 94% reduction of demand. The mass balance in the system indicated that the LAS removal efficiency was 45% after 18 0days. From the 109 th day to the 254 th day, a removal efficiency of 32% was observed. The removal of LAS was approximately 40% when 1500 mg of LAS were applied in the absence of co-substrates suggesting that the LAS molecules were used selectively. Microscopic analyses of the biofilm revealed diverse microbial morphologies and denaturing gradient gel electrophoresis profiling showed variations in the total bacteria and sulfate-reducing bacteria populations. 16S rRNA sequencing and phylogenetic analyses demonstrated that members of the order Clostridiales were the major components of the bacterial community in the last step of the reactor operation.
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Affiliation(s)
- I C S Duarte
- Federal University of São Carlos, Rodovia João Leme dos Santos, Km 110, 18052-780 Sorocaba, SP, Brazil.
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Duarte ICS, Oliveira LL, Saavedra NKD, Fantinatti-Garboggini F, Oliveira VM, Varesche MBA. Evaluation of the microbial diversity in a horizontal-flow anaerobic immobilized biomass reactor treating linear alkylbenzene sulfonate. Biodegradation 2007; 19:375-85. [PMID: 17647084 DOI: 10.1007/s10532-007-9143-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2006] [Accepted: 07/02/2007] [Indexed: 10/23/2022]
Abstract
The purpose of this work was to assess the degradation of linear alkylbenzene sulfonate (LAS) in a horizontal-flow anaerobic immobilized biomass (HAIB) reactor. The reactor was filled with polyurethane foam where the sludge from a sanitary sewage treatment was immobilized. The hydraulic detention time (HDT) used in the experiments was of 12 h. The reactor was fed with synthetic substrate (410 mg l(-1) of meat extract, 115 mg l(-1) of starch, 80 mg l(-1) of saccharose, 320 mg l(-1) of sodium bicarbonate and 5 ml l(-1) of salt solution) in the following stages of operation: SI-synthetic substrate, SII-synthetic substrate with 7 mg l(-1) of LAS, SIII-synthetic substrate with 14 mg l(-1) of LAS and SIV-synthetic substrate containing yeast extract (substituting meat extract) and 14 mg l(-1) of LAS, without starch. At the end of the experiment (313 days) a degradation of approximately 35% of LAS was achieved. The higher the concentration of LAS, the greater the amount of foam for its adsorption. This is necessary because the isotherm of LAS adsorption in the foam is linear for the studied concentrations (2 to 50 mg l(-1)). Microscopic analyses of the biofilm revealed diverse microbial morphologies, while Denaturing Gradient Gel Eletrophoresis (DGGE) profiling showed variations in the population of total bacteria and sulphate-reducing bacteria (SRB). The 16S rRNA gene sequencing and phylogenetic analyses revealed that the members of the order Clostridiales were the major components of the bacterial community in the last reactor operation step.
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Affiliation(s)
- I C S Duarte
- Department of Hydraulics and Sanitation, School of Engineering of São Carlos, University of São Paulo, Brazil. Av. Trabalhador São-Carlense, no. 400, São Carlos, SP 13566-590, Brazil.
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Porto ACRC, Oliveira LL, Ferraz LC, Ferraz LES, Thomaz SMO, Rosa JC, Roque-Barreira MC. Isolation of Bovine Immunoglobulins Resistant to Peptic Digestion: New Perspectives in the Prevention of Failure in Passive Immunization of Neonatal Calves. J Dairy Sci 2007; 90:955-62. [PMID: 17235172 DOI: 10.3168/jds.s0022-0302(07)71579-5] [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] [Indexed: 11/19/2022]
Abstract
In calves, neonatal mortality and disease susceptibility are greatly influenced by failure in passive immunization, normally provided by colostrum ingestion just after birth. Formulations projected to replace natural colostrum have not been successful, and one of the possible reasons for such failure is that orally administered Ig are probably digested in the gastrointestinal tract, so they are not absorbed as intact functional molecules. With the aim of finding an adequate colostrum substitute, we used columns of immobilized jacalin, a lectin known by its ability to bind O-linked oligosaccharides, to obtain a colostral Ig population putatively protected against enzymatic cleavage by the presence of sugar chains. Immunoglobulin G1 is a major constituent of colostrum Ig bound to jacalin (JB-Ig). This preparation contains 10% of the total colostral Ig and is typically 3 to 6 times more resistant to pepsin digestion than the Ig contained in the fraction that is not bound to jacalin, which presumably does not contain O-glycans. Mass spectrometry analysis demonstrated that the tryptic peptides obtained from JB-Ig and unbound Ig were similar, indicating that their distinct susceptibility to enzyme hydrolysis was associated with differences in their sugar chains. Therefore, the present research suggests that the bovine colostrum JB-Ig has potential application in the immunotherapy of neonatal calves that have not been supplied with colostrum.
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Affiliation(s)
- A C R C Porto
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes 3900, 14049-900 Ribeirão Preto, São Paulo, Brazil
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Reis FM, Oliveira LL, Brito MF. The association of age and sexual history with the severity of the histological findings in women with cervical intraepithelial neoplasia. Gynecol Obstet Invest 1996; 42:258-60. [PMID: 8979099 DOI: 10.1159/000291976] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We examined the demographic and behavioral data of 203 patients with histological diagnosis of cervical intraepithelial neoplasia (CIN) to assess putative predictors of the most severe alterations (CIN grade III). The variables significantly associated with the histological diagnosis of CIN III were time since first intercourse (odds ratio 5.33, 95% CI 1.80-16.15), time since menarche (odds ratio 4.62, 95% CI 1.39-16.05) and age (odds ratio 2.48, 95% CI 1.32-4.67). After multivariate analysis, the only independent variable still associated with CIN III was the time since first intercourse (odds ratio 6.11, p < 0.05). It is concluded that, in patients with recently diagnosed CIN, the time since first intercourse-rather than age, age at first intercourse or lifetime number of sex partners-is the information best associated with the severity of the disease.
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Affiliation(s)
- F M Reis
- Clinic of Cervical Pathology, Odete Valadares Women's Hospital, Belo Horizonte, Brazil
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