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Pereira Motta M, Oliveira ASB, André Nogueira JA, Vieira de Souza Moscardi AA, Munhoz Teixeira C, Manchim Favaro V, Simcsik AO, Conde S, Patrizi MC, Rinaldi C, Fontani V, Rinaldi S. Improving Strength and Fatigue Resistance in Post-Polio Syndrome Individuals with REAC Neurobiological Treatments. J Pers Med 2023; 13:1536. [PMID: 38003851 PMCID: PMC10672477 DOI: 10.3390/jpm13111536] [Citation(s) in RCA: 1] [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] [Received: 09/16/2023] [Revised: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023] Open
Abstract
Post-Polio Syndrome (PPS) is a chronic condition characterized by the emergence of new symptoms and functional decline in individuals who previously had polio. Despite advances in medical understanding, management of PPS remains challenging. This study aimed to evaluate the use of neurobiological modulation treatments using Radio Electric Asymmetric Conveyer (REAC) technology on fatigue and muscle strength. An open-label study was conducted with 17 patients submitted to four neuromodulation protocols: Neuro Postural Optimization (NPO), Neuro Psycho Physical Optimization (NPPO), Neuro Psycho Physical Optimization-Cervico Brachial (NPPO-CB), and Neuromuscular Optimization (NMO). The Time Up and Go (TUG) test, Handgrip Strength Test, and Revised Piper Fatigue Scale (RPFS) were used to assess participants' fatigue and muscle strength, being applied at the beginning and end of each protocol. The results obtained from the improvement in strength, physical endurance, and particularly the RPFS behavioral dimension, affective dimension, and psychological sensory dimension, through the utilization of REAC neurobiological modulation treatments, highlight this correlation. These results suggest that these treatments could be considered as a potential therapeutic approach for PPS.
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Affiliation(s)
- Monalisa Pereira Motta
- Division of Neuromuscular Diseases, Department of Neurology and Neurosurgery, Federal University of São Paulo, São Paulo 01000-000, Brazil; (M.P.M.); (J.A.A.N.); (C.M.T.); (V.M.F.); (A.O.S.); (S.C.); (M.C.P.)
| | - Acary Souza Bulle Oliveira
- Division of Neuromuscular Diseases, Department of Neurology and Neurosurgery, Federal University of São Paulo, São Paulo 01000-000, Brazil; (M.P.M.); (J.A.A.N.); (C.M.T.); (V.M.F.); (A.O.S.); (S.C.); (M.C.P.)
| | - Jeyce Adrielly André Nogueira
- Division of Neuromuscular Diseases, Department of Neurology and Neurosurgery, Federal University of São Paulo, São Paulo 01000-000, Brazil; (M.P.M.); (J.A.A.N.); (C.M.T.); (V.M.F.); (A.O.S.); (S.C.); (M.C.P.)
| | | | - Claudete Munhoz Teixeira
- Division of Neuromuscular Diseases, Department of Neurology and Neurosurgery, Federal University of São Paulo, São Paulo 01000-000, Brazil; (M.P.M.); (J.A.A.N.); (C.M.T.); (V.M.F.); (A.O.S.); (S.C.); (M.C.P.)
| | - Vanessa Manchim Favaro
- Division of Neuromuscular Diseases, Department of Neurology and Neurosurgery, Federal University of São Paulo, São Paulo 01000-000, Brazil; (M.P.M.); (J.A.A.N.); (C.M.T.); (V.M.F.); (A.O.S.); (S.C.); (M.C.P.)
| | - Amanda Orasmo Simcsik
- Division of Neuromuscular Diseases, Department of Neurology and Neurosurgery, Federal University of São Paulo, São Paulo 01000-000, Brazil; (M.P.M.); (J.A.A.N.); (C.M.T.); (V.M.F.); (A.O.S.); (S.C.); (M.C.P.)
| | - Salete Conde
- Division of Neuromuscular Diseases, Department of Neurology and Neurosurgery, Federal University of São Paulo, São Paulo 01000-000, Brazil; (M.P.M.); (J.A.A.N.); (C.M.T.); (V.M.F.); (A.O.S.); (S.C.); (M.C.P.)
| | - Maria Clara Patrizi
- Division of Neuromuscular Diseases, Department of Neurology and Neurosurgery, Federal University of São Paulo, São Paulo 01000-000, Brazil; (M.P.M.); (J.A.A.N.); (C.M.T.); (V.M.F.); (A.O.S.); (S.C.); (M.C.P.)
| | - Chiara Rinaldi
- Department of Neuroscience, Psychology, Drug Area, and Child Health (NEUROFARBA), University of Florence, 50134 Florence, Italy;
- Department of Adaptive Neuro Psycho Physio Pathology and Neuro Psycho Physical Optimization, Rinaldi Fontani Institute, 50144 Florence, Italy;
- Department of Regenerative Medicine, Rinaldi Fontani Institute, 50144 Florence, Italy
- Research Department, Rinaldi Fontani Foundation, 50144 Florence, Italy
| | - Vania Fontani
- Department of Adaptive Neuro Psycho Physio Pathology and Neuro Psycho Physical Optimization, Rinaldi Fontani Institute, 50144 Florence, Italy;
- Department of Regenerative Medicine, Rinaldi Fontani Institute, 50144 Florence, Italy
- Research Department, Rinaldi Fontani Foundation, 50144 Florence, Italy
| | - Salvatore Rinaldi
- Department of Adaptive Neuro Psycho Physio Pathology and Neuro Psycho Physical Optimization, Rinaldi Fontani Institute, 50144 Florence, Italy;
- Department of Regenerative Medicine, Rinaldi Fontani Institute, 50144 Florence, Italy
- Research Department, Rinaldi Fontani Foundation, 50144 Florence, Italy
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Wilson DA, Fleming G, Williams CRO, Teixeira CM, Smiley JF, Saito M. Somatostatin neuron contributions to cortical slow wave dysfunction in adult mice exposed to developmental ethanol. Front Neurosci 2023; 17:1127711. [PMID: 37021136 PMCID: PMC10067632 DOI: 10.3389/fnins.2023.1127711] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 03/06/2023] [Indexed: 04/07/2023] Open
Abstract
Introduction Transitions between sleep and waking and sleep-dependent cortical oscillations are heavily dependent on GABAergic neurons. Importantly, GABAergic neurons are especially sensitive to developmental ethanol exposure, suggesting a potential unique vulnerability of sleep circuits to early ethanol. In fact, developmental ethanol exposure can produce long-lasting impairments in sleep, including increased sleep fragmentation and decreased delta wave amplitude. Here, we assessed the efficacy of optogenetic manipulations of somatostatin (SST) GABAergic neurons in the neocortex of adult mice exposed to saline or ethanol on P7, to modulate cortical slow-wave physiology. Methods SST-cre × Ai32 mice, which selectively express channel rhodopsin in SST neurons, were exposed to ethanol or saline on P7. This line expressed similar developmental ethanol induced loss of SST cortical neurons and sleep impairments as C57BL/6By mice. As adults, optical fibers were implanted targeting the prefrontal cortex (PFC) and telemetry electrodes were implanted in the neocortex to monitor slow-wave activity and sleep-wake states. Results Optical stimulation of PFC SST neurons evoked slow-wave potentials and long-latency single-unit excitation in saline treated mice but not in ethanol mice. Closed-loop optogenetic stimulation of PFC SST neuron activation on spontaneous slow-waves enhanced cortical delta oscillations, and this manipulation was more effective in saline mice than P7 ethanol mice. Discussion Together, these results suggest that SST cortical neurons may contribute to slow-wave impairment after developmental ethanol.
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Affiliation(s)
- Donald A Wilson
- Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, United States
- Department of Child and Adolescent Psychiatry, New York University School of Medicine, New York, NY, United States
- Department of Neuroscience and Physiology, New York University School of Medicine, New York, NY, United States
| | - G Fleming
- Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, United States
| | - C R O Williams
- Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, United States
| | - C M Teixeira
- Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, United States
- Department of Child and Adolescent Psychiatry, New York University School of Medicine, New York, NY, United States
| | - J F Smiley
- Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, United States
- Department of Psychiatry, New York University School of Medicine, New York, NY, United States
| | - Mariko Saito
- Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, United States
- Department of Psychiatry, New York University School of Medicine, New York, NY, United States
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Rezende LC, Oliveira TM, Teixeira CM, Oliveira PR, Martins NRS, Cunha LM. Occurrence and Epidemiology of Fannia Spp. (Diptera: Fanniidae) in Laying Poultry Farms in State of Minas Gerais, Brazil. Braz J Poult Sci 2018. [DOI: 10.1590/1806-9061-2017-0595] [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] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- LC Rezende
- Ministério da Agricultura, Pecuária e Abastecimento, Brazil
| | - TM Oliveira
- Universidade Federal de Minas Gerais, Brazil
| | | | - PR Oliveira
- Universidade Federal de Minas Gerais, Brazil
| | - NRS Martins
- Universidade Federal de Minas Gerais, Brazil
| | - LM Cunha
- Universidade Federal de Ouro Preto, Brazil
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Soares IO, Bruzi AT, Zambiazzi EV, Guilherme SR, Bianchi MC, Silva KB, Fronza V, Teixeira CM. Stability and adaptability of soybean cultivars in Minas Gerais. Genet Mol Res 2017; 16:gmr-16-03-gmr.16039730. [PMID: 28829903 DOI: 10.4238/gmr16039730] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Genotypes x environment (G x E) interaction consists of different behavior of genotypes cultivated in different environments. This interaction occurs due to the performance variation of each genotype in different environments. To reduce the effect of the interaction in soybean crops, some studies have been reported in the literature to study their adaptability and stability. However, these studies are still scarce in Minas Gerais State. Thus, the aim of this study was to verify the adaptability and stability of soybean cultivars and identify the cultivars that contribute least to the G x E interaction in Minas Gerais. Six soybean cultivars were evaluated in 9 different environments. The plots were composed of 4 rows of 5 m with a spacing of 0.5 m between rows, and only the two central rows were harvested. The inoculation with Bradyrhizobium japonicum was performed through sowing furrow. The fertilization followed the recommendations of the Soil Fertility Commission of Minas Gerais. Grain yield was evaluated in kg/ha after conversion to 13% moisture. After individual analysis, the joint analysis was performed by grouping the phenotypic means by the Scott and Knott (1974) test. Wricke's ecovalence methodologies and the Annicchiarico confidence index were applied for the adaptability and stability analysis. The interaction was decomposed into a simple and a complex part. The cultivars BRSMG 820RR and BRSMG 760SRR have wide adaptability and stability. The first one presents a better index of confidence and a small contribution to the interaction.
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Affiliation(s)
- I O Soares
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - A T Bruzi
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - E V Zambiazzi
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - S R Guilherme
- Departamento de Biologia, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - M C Bianchi
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - K B Silva
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - V Fronza
- Empresa Brasileira de Pesquisa Agropecuária, , Brasil
| | - C M Teixeira
- Empresa de Pesquisa Agropecuária de Minas Gerais, Unidade Regional EPAMIG Triângulo e Alto Paranaíba, , Brasil
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Silva KB, Bruzi AT, Zuffo AM, Zambiazzi EV, Soares IO, de Rezende PM, Fronza V, Vilela GDL, Botelho FBS, Teixeira CM, de O Coelho MA. Adaptability and phenotypic stability of soybean cultivars for grain yield and oil content. Genet Mol Res 2016; 15:gmr6756. [PMID: 27173225 DOI: 10.4238/gmr.15026756] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The aim of this study was to verify the adaptability and stability of soybean cultivars with regards to yield and oil content. Data of soybean yield and oil content were used from experiments set up in six environments in the 2011/12 and 2012/13 crop seasons in the municipalities of Patos de Minas, Uberaba, Lavras, and São Gotardo, Minas Gerais, Brazil, testing 36 commercial soybean cultivars of both conventional and transgenic varieties. The Wricke method and GGE biplot analysis were used to evaluate adaptability and stability of these cultivars. Large variations were observed in grain yield in relation to the different environments studied, showing that these materials are adaptable. The cultivars exhibited significant differences in oil content. The cultivars BRSGO204 (Goiânia) and BRSMG (Garantia) exhibited the greatest average grain yield in the different environments studied, and the cultivar BRSMG 760 SRR had the greatest oil content among the cultivars evaluated. Ecovalence was adopted to identify the most stable cultivars, and the estimates were nearly uniform both for grain yield and oil content, showing a variation of 0.07 and 0.01%, respectively. The GGE biplot was efficient at identifying cultivars with high adaptability and phenotype stability.
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Affiliation(s)
- K B Silva
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - A T Bruzi
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - A M Zuffo
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - E V Zambiazzi
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - I O Soares
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - P M de Rezende
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - V Fronza
- Empresa Brasileira de Pesquisa Agropecuária, Londrina, PR, Brasil
| | - G D L Vilela
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - F B S Botelho
- Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - C M Teixeira
- Empresa de Pesquisa Agropecuária de Minas Gerais, Unidade Regional EPAMIG Triângulo e Alto Paranaíba, Uberaba, MG, Brasil
| | - M A de O Coelho
- Empresa de Pesquisa Agropecuária de Minas Gerais, Unidade Regional EPAMIG Triângulo e Alto Paranaíba, Uberaba, MG, Brasil
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Rezende LDC, Martins NRDS, Teixeira CM, Oliveira PRD, Cunha LM. Epidemiological aspects of lice (Menacanthus species) infections in laying hen flocks from the State of Minas Gerais, Brazil. Br Poult Sci 2015; 57:44-50. [PMID: 26642864 DOI: 10.1080/00071668.2015.1127893] [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: 10/22/2022]
Abstract
The epidemiology of chicken lice species such as Menacanthus stramineus, M. cornutus and M. pallidulus were studied during an observational, analytical and sectional survey, to determine predisposing factors for their occurrence in laying hen farms in the State of Minas Gerais, Brazil. A total of 431 houses on 43 farms were visited in 2012. M. cornutus, M. stramineus and M. pallidulus occurred in 20.9%, 11.6% and 11.6% of farms, respectively. The frequencies of occurrence of M. cornutus, M. stramineus and M.pallidulus in poultry houses were 10.4%, 8.8% and 3.7%, respectively. The epidemiological determinants for the occurrence of these species were investigated using Poisson or logistic regression models. The region of the farm, the recent use of acaricides and the presence of birds, such as saffron finch (Sicalis flaveola), feral pigeon (Columba livia) and Guira cuckoo (Guira guira) around the farms were related to the epidemiology of M. cornutus. Infestation by M. stramineus was associated with age of birds, number of birds per cage and the presence of Guira cuckoo and Chopi blackbird (Gnorimopsar chopi) near the poultry houses. The occurrence of M. pallidulus was influenced by the type of facilities, presence of cattle egret (Bubulcus ibis) and free-range domestic hens around the farm. The use of wire mesh nets in the houses and of forced moulting did not influence lice infestation.
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Affiliation(s)
- L Do Carmo Rezende
- a Departamento de MedicinaVeterináriaPreventiva , Escola de Veterinária da Universidade Federal de Minas Gerais, Campus da UFMG , Belo Horizonte , Minas Gerais , Brazil
| | - N R Da Silva Martins
- a Departamento de MedicinaVeterináriaPreventiva , Escola de Veterinária da Universidade Federal de Minas Gerais, Campus da UFMG , Belo Horizonte , Minas Gerais , Brazil
| | - C M Teixeira
- a Departamento de MedicinaVeterináriaPreventiva , Escola de Veterinária da Universidade Federal de Minas Gerais, Campus da UFMG , Belo Horizonte , Minas Gerais , Brazil
| | - P R De Oliveira
- a Departamento de MedicinaVeterináriaPreventiva , Escola de Veterinária da Universidade Federal de Minas Gerais, Campus da UFMG , Belo Horizonte , Minas Gerais , Brazil
| | - L M Cunha
- b Centro de Ciência Animal , Instituto de Ciências Exatas e Biológicas da Universidade Federal de Ouro Preto, UFOP , Campus Morro do Cruzeiro, Ouro Preto , Minas Gerais , Brazil
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Llorens-Martín M, Fuster-Matanzo A, Teixeira CM, Jurado-Arjona J, Ulloa F, Defelipe J, Rábano A, Hernández F, Soriano E, Avila J. GSK-3β overexpression causes reversible alterations on postsynaptic densities and dendritic morphology of hippocampal granule neurons in vivo. Mol Psychiatry 2013; 18:451-60. [PMID: 23399915 DOI: 10.1038/mp.2013.4] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Adult hippocampal neurogenesis (AHN) is crucial for the maintenance of hippocampal function. Several neurodegenerative diseases such as Alzheimer's disease (AD) are accompanied by memory deficits that could be related to alterations in AHN. Here, we took advantage of a conditional mouse model to study the involvement of glycogen synthase kinase-3β (GSK-3β) overexpression (OE) in AHN. By injecting GFP- and PSD95-GFP-expressing retroviruses, we have determined that hippocampal GSK-3β-OE causes dramatic alterations in both dendritic tree morphology and post-synaptic densities in newborn neurons. Alterations in previously damaged neurons were reverted by switching off the transgenic system and also by using a physiological approach (environmental enrichment) to increase hippocampal plasticity. Furthermore, comparative morphometric analysis of granule neurons from patients with AD and from GSK-3β overexpressing mice revealed shared morphological alterations. Taken together, these data indicate that GSK-3β is crucial for hippocampal function, thereby supporting this kinase as a relevant target for the treatment of AD.
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Affiliation(s)
- M Llorens-Martín
- Department of Molecular Neurobiology, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain
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Llorens-Martín M, Fuster-Matanzo A, Teixeira CM, Jurado-Arjona J, Ulloa F, Defelipe J, Rábano A, Hernández F, Soriano E, Avila J. Alzheimer disease-like cellular phenotype of newborn granule neurons can be reversed in GSK-3β-overexpressing mice. Mol Psychiatry 2013; 18:395. [PMID: 23519405 DOI: 10.1038/mp.2013.27] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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: 11/09/2022]
Affiliation(s)
- M Llorens-Martín
- Molecular Neurobiology Department, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain
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Ruchko LF, Elfimov AG, Teixeira CM, Elizondo JI, Sanada E, Galvão RMO, Manso ME, Silva A. Registration of Alfvén resonances in TCABR tokamak by the scanning reflectometer at sideband frequencies. Rev Sci Instrum 2011; 82:023504. [PMID: 21361592 DOI: 10.1063/1.3541756] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A frequency scanning O-mode reflectometer was used for studies of plasma density oscillations during local Alfvén wave (LAW) excitation in the Tokamak Chauffage Alfvén Brésilien (TCABR) at the frequency f(A) = 5 MHz. It was found that the spectrum of the reflectometer output signal, which consists mainly of the "beat" frequency f(B), is modified by the LAW excitation, and two additional frequency peaks appear, which are symmetrical in relation to the LAW excitation frequency f = f(A) ± f(B). This result opens the possibility to improve the efficiency of studying the LAW induced density oscillations. The symmetry of these frequency peaks yields the possibility of finding the microwave frequency at which the reflectometer cutoff layer coincides with radial position of the LAW resonance zone in the TCABR tokamak.
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Affiliation(s)
- L F Ruchko
- Instituto de Física, Universidade de São Paulo, São Paulo, Brazil.
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Alves BCA, Hossepian de Lima VFM, Teixeira CM, Moreira-Filho CA. Use of primers derived from a new sequence of the bovine Y chromosome for sexing Bos taurus and Bos indicus embryos. Theriogenology 2003; 59:1415-9. [PMID: 12527087 DOI: 10.1016/s0093-691x(02)01191-3] [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: 11/18/2022]
Abstract
A bovine male-specific marker was identified in our laboratory through random amplified polymorphic DNA (RAPD) analysis. This fragment of 3216 bp was cloned, sequenced and mapped by fluorescent in situ hybridization (FISH) on the taurine Yq. Primers derived from this sequence were initially screened by polymerase chain reaction (PCR) for their ability to detect Y-specific segments in zebu and taurine genomic DNA. Two of these primers amplified a 655 bp Y-specific sequence present in taurine and zebu male genomic DNA. These primers were then used for detecting the 655 bp male sequence in DNA from 173 zebu and 30 taurine embryos, which had been previously sexed using primers for the sequence BC 1.2. The results revealed an accuracy of 100%.
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Affiliation(s)
- B C A Alves
- Department of Immunology, Biomedical Sciences Institute, University of São Paulo, São Paulo, SP, Brazil
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Gaziola SA, Teixeira CM, Lugli J, Sodek L, Azevedo RA. The enzymology of lysine catabolism in rice seeds--isolation, characterization, and regulatory properties of a lysine 2-oxoglutarate reductase/saccharopine dehydrogenase bifunctional polypeptide. Eur J Biochem 1997; 247:364-71. [PMID: 9249048 DOI: 10.1111/j.1432-1033.1997.00364.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In plant, the catabolism of lysine has only been studied in some detail in maize. The enzymes lysine 2-oxoglutarate reductase (also known as lysine alpha-ketoglutarate reductase; LOR) and saccharopine dehydrogenase (SDH), which convert lysine into saccharopine, and saccharopine into glutamic acid and 2-aminoadipate 6-semialdehyde, respectively, were isolated from immature rice seeds and partially purified through a three-step purification procedure involving ammonium sulphate precipitation, and anion-exchange and gel-filtration chromatographies, leading to a final yield of 30% for LOR and 24% for SDH. The molecular masses estimated by gel-filtration chromatography on a Sephacryl S200 column and by native non-denaturing PAGE using Ferguson plots were 203 kDa for both enzymes by gel-filtration and 202 kDa for both enzymes by native non-denaturing PAGE. A second band of LOR and SDH activities on native gels was observed for both enzymes with an estimated molecular mass of 396 kDa, which indicated a multimeric structure. Kinetic studies were consistent with an ordered sequence mechanism for LOR, where 2-oxoglutarate is the first substrate and saccharopine is the last product. The results observed for the LOR/SDH activity ratios during purification, the copurification in all three steps, the molecular masses, the relative mobilities on native non-denaturing gels and the pI estimated for LOR and SDH suggest the existence of a bifunctional polypeptide containing LOR and SDH activities.
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Affiliation(s)
- S A Gaziola
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brasil
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Teixeira CM. [Project of guidelines for the integration of nurses and managers in a district hospital]. Servir 1997; 45:106-17. [PMID: 9248491] [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] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Abstract
In endochondral bone, the growth cartilage is the site of rapid growth. Since the vascular supply to the cartilage is limited, it is widely assumed that cells of the cartilage are hypoxic and that limitations in the oxygen supply regulate the energetic state of the maturing cells. In this report, we evaluate the effects of oxygen tension on chondrocyte energy metabolism, thiol status, and expression of transcription elements, HIF and AP-1. Imposition of an hypoxic environment on cultured chondrocytes caused a proportional increase in glucose utilization and elevated levels of lactate synthesis. Although we observed a statistical increase in the activities of phosphofructokinase, pyruvate kinase, lactate dehydrogenase, and creatine kinase after exposure to lowered oxygen concentrations, the effect was small. The cultured cells exhibited a decreased utilization of glutamine, possibly due to down regulation of mitochondrial function and inhibition of oxidative deamination. With respect to total energy generation, we noted that these cells are quite capable of maintaining the energy charge of the cell at low oxygen tensions. Indeed, no changes in the absolute quantity of adenine nucleotides or the energy charge ratio was observed. Hypoxia caused a decrease in the glutathione content of cultured chondrocytes and a concomitant rise in cell and medium cysteine levels. It is likely that the fall in cell glutathione level is due to decreased synthesis of the tripeptide under reduced oxygen stress and the limited supply of glutamate. The observed rise in cellular and medium cysteine levels probably reflects an increase in the rate of degradation of glutathione and a decrease in synthesis of the peptide. To explore how cells transduce these metabolic effects, gel retardation assays were used to study chondrocyte HIF and AP-1 binding activities. Chondrocyte nuclear preparations bound an HIF-oligonucleotide; however, at low oxygen tensions, no increase in HIF binding was observed. In addition, we found that AP-1 binding activities in chondrocytes exposed to low oxygen tensions was elevated, although the response was lower than that exhibited by fibroblasts exposed to the same range of oxygen concentrations. We compared these results to HIF and AP-1 binding by cells in the growth plate. There was strong HIF and AP-1 binding throughout the plate, but no evidence of selective binding to any one zone. The results of the study lend strong support to the view that chondrocytes are very well adapted to low oxygen tensions; thus, under hypoxic conditions, there is a high level of expression of both HIF and AP-1, and energy conservation appears to be near-maximum.
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Affiliation(s)
- R Rajpurohit
- Department of Biochemistry, School of Dental Medicine, University of Pennsylvania, Philadelphia 19104-6003, USA
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15
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Teixeira CM, Chaves MR. [The behavior of asthmatic patients. Prevention of crises between the ages of 18 and 65]. Servir 1996; 44:116-28. [PMID: 8718243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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16
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Costa EO, Gandra CR, Pires MF, Coutinho SD, Castilho W, Teixeira CM. Survey of bovine mycotic mastitis in dairy herds in the State of São Paulo, Brazil. Mycopathologia 1993; 124:13-7. [PMID: 8159214 DOI: 10.1007/bf01103051] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The purpose of this study was to isolate fungi from the quarter milk of cow udders from several dairy herds and to identify the different genera and species involved in mastitis. A total of 2078 milk samples from normal, clinical and subclinical mastitis quarters from 22 dairy herds of 16 districts in the State of São Paulo, Brazil was utilized in this survey. Two hundred and fifty one (12.07%) fungi were isolated from the samples. Two hundred and eight of these (82.86%) were yeasts and 30 (11.95%) were moulds. The fungi were isolated in pure culture (24.77%) or in cultures mixed with bacteria (72.22%). The yeasts isolated were: Cryptococcus spp. (71 strains), Rhodotorula spp. (40), Candida spp. (68), Trichosporon cutaneum (21), Aureobasidium pullulans (7), and Pichia ohmeri (1). Moulds classified in following genera were also isolated: Aspergillus (3), Penicillium (3), Alternaria (3), Phoma (3), Epicoccum (2), and Geotrichum (16).
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Affiliation(s)
- E O Costa
- Department of Veterinary Preventive & Animal Health, Faculdade de Medicina Veterinaria e Zootecnia, Universidade de São Paulo
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17
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Teixeira WR, Mori SS, Morrone Júnior Z, Arias HS, Queiroz SM, Teixeira CM. [Battered child syndrome]. Rev Paul Med 1984; 102:237-43. [PMID: 6535216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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