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Star power: harnessing the reactive astrocyte response to promote remyelination in multiple sclerosis

Neural Regeneration Research 2024年第3期19卷 578-582页

作者： Markley Silva Oliveira Junior Laura Reiche emerson daniele Ines Kortebi Maryam Faiz Patrick Küry Department of Neurology Neuroregeneration laboratoryMedical FacultyHeinrich-Heine-UniversityDüsseldorfGermany Institute of Medical Science University of TorontoTorontoCanada Division of Anatomy Department of SurgeryUniversity of TorontoTorontoCanada

Astrocytes are indispensable for central nervous system development and *** response to injury and disease,astrocytes are integral to the immunological-and the,albeit limited,repair *** this review,we will examine some of the functions reactive astrocytes play in the context of multiple sclerosis and related animal *** will consider the heterogeneity or plasticity of astrocytes and the mechanisms by which they promote or mitigate ***,we will discuss a set of biomedical strategies that can stimulate astrocytes in their promyelinating response.

关键词： astrocytes demyelination drug-based therapies myelin repair oligodendrocyte precursor cells reactive astrogliosis

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Assessment of the Anaerobic Speed Reserve during Specific High-Intensity Exercise in Judo Athletes

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Journal of Science in Sport and Exercise 2022年第3期4卷 266-274页

作者： emerson Franchini Rafael Lima Kons Valéria Leme Gonçalves Panissa daniele Detanico Martial Arts and Combat Sports Research Group School of Physical Education and SportUniversity of São PauloSão PauloBrazil Biomechanics Laboratory Center of SportsFederal University of Santa CatarinaFlorianópolisSC 88040-900Brazil

Purpose This study aimed to describe self-selected intensity and its relationship to performance during a high-intensity all-out judo protocol,and to verify whether athletes with different anaerobic speed reserve(ASR)perform differently during a high-intensity all-out interval uchi-komi(judo-specific skill).Methods We analyzed the performance of 28 judo athletes as a whole group and divided into groups,according to their *** performed several judo-specific protocols using a specific skill:maximal speed sprint(MSS)and maximal aerobic speed(MAS),and high-intensity intermittent uchi-komi protocol(12×20 s all-out:10 s passive recovery).Results The main results demonstrated a decrease in the number of repetitions and an increase in heart rate across the *** with greater ASR performed a higher number of repetitions,compared to the low ASR group,and they were able to exercise at a higher percentage of the MAS(low ASR=126%;SD=13%;high ASR=152%,SD=l9%)and at a lower percentage of MSS compared to the low ASR group(low ASR=84%,SD=7%;high ASR=76%,SD=11%).However,both groups exercised at a similar percentage of their own ASR during the protocol(low ASR=50%,SD=20%;high ASR=53%,SD=19%).Conclusions Athletes with different ASR seem to set their pace at around 50%of their ASR within an all-out uchi-komi ***,the ASR is useful for predicting performance during high-intensity judo-specific interval exercise intervals.

关键词： Combat sports Rating of perceived exertion Pace All-out exercise

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Ruminal degradability of Guinea grass silage inoculated with Streptoccocus bovis isolated from bovine rumen combined or not with com wheat bran

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Agricultural Sciences 2013年第12期4卷 628-634页

作者： emerson A. Bonelli Anderson de M. Zanine Alexandre L. de Souza daniele de J. Ferreira Guilherme R. Alves Animal Science Department Universidade Federal de Mato Grosso Cuiabá Brasil

This experiment aimed to evaluate the ruminal degradability in situ of the dry matter (DM), crude protein (CP), neutral detergent fiber (NDF) and acid detergent fiber (ADF) of Guinea grass silages. The experimental design was completely randomized with six treatments and six repetitions: Guinea grass silage, Guinea grass silage inoculated with 10% wheat bran, Guinea grass silage inoculated with 106 cfu/g of strains of Streptococcus bovis JB1;Guinea grass silage inoculated with 106 cfu/g of strains of Streptococcus bovis JB1 plus 10% of wheat bran;Guinea grass silage inoculated with 106 cfu/g of strains of Streptococcus bovis HC5;Guinea grass silage inoculated with 106 cfu/g of strains of Streptococcus bovis HC5 plus 10% of wheat bran. The silages inoculated with Streptococcus bovis and with added wheat bran resulted in higher values of ruminal degradability of DM, 32.76% and 32.17%, and of crude protein 38.28% and 37.89%. For the effective and potential degradability of DM, CP, NDF and ADF the highest values occurred for silages in these silages as well, in all passage rates. There is a similarity between the responses of Streptococcus bovis JB1 and the HC5, and the wheat bran enhanced the effectiveness of the microbial additive.

关键词： Crude Protein Digestion Dry Matter Fiber Inoculant

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Conserved Cytochrome P450 Evolved in Seed Plants Regulates Flower Maturation

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Molecular Plant 2015年第12期8卷 1751-1765页

作者： Zhenhua Liu Benoit Boachon RaphaelLugan Raquel Tavares Mathieu Erhardt Jerome Mutterer Valerie Demais Stephanie Pateyron Veronique Brunaud Toshiyuki Ohnishi Ales Pencik Patrick Achard Fan Gong Peter Hedden daniele Werck-Reichhart Hugues Renault Institute of Plant Molecular Biology Centre National de la Recherche Scientifique (CNRS) University of Strasbourg 67084 Strasbourg France Laboratoire de Biometrie et Biologie Evolutive Universite Lyon 1 CNRS 69622 Villeurbanne France plateforme d'lmagerie In Vitro IFR 37 de Neurosciences 67084 Strasbourg France Transcriptomic Platform Unite de Recherche en Genomique Vegetale (URGV) INRA Universite d'Evry Val d'Essonne CNRS 91057 Evry France Bioinformatics for Predictive Genomics URGV INRA Universite d'Evry Val d'Essonne CNRS 91057 Evry France Graduate School of Agriculture Shizuoka University Shizuoka 422-8529 Japan Laboratory of Growth Regulators & Department of Chemical Biology and Genetics Centre of the Region Hana for Biotechnological and Agricultural Research Faculty of Science Palacky University & Institute of Experimental Botany AS CR 771 47 Olomouc Czech Republic Rothamsted Research Harpenden Hertfordshire AL5 2JQ UK University of Strasbourg Institute for Advanced Study (USIAS) 67084 Strasbourg France Freiburg institute for Advanced Studies (FRIAS) University of Freiburg 79104 Freiburg Germany Present address: 158 emerson Hall Section of Plant Biology School of Integrative Plant Science Cornell University Ithaca NY 14853 USA present address: Laboratoire Physiologie des Fruits et Legumes - EA 4279 Campus Agroparc Avignon France present address: Home Office Science - Centre for Applied Science and Technology Woodcock Hill Sandridge St Albans HeFts AL4 9HQ UK

Global inspection of plant genomes identifies genes maintained in low copies across taxa and under strong purifying selection, which are likely to have essential functions. Based on this rationale, we investigated the function of the low-duplicated CYP715 cytochrome P450 gene family that appeared early in seed plants and evolved under strong negative selection. Arabidopsis CYP715A 1 showed a restricted tissue-specific expres- sion in the tapetum of flower buds and in the anther filaments upon anthesis, cyp715a1 insertion lines showed a strong defect in petal development, and transient alteration of pollen intine deposition. Comparative expres- sion analysis revealed the downregulated expression of genes involved in pollen development, cell wall biogenesis, hormone homeostasis, and floral sesquiterpene biosynthesis, especially TPS21 and several key genes regulating floral development such as MYB21, MYB24, and MYC2. Accordingly, floral sesquiterpene emission was suppressed in the cyp715a1 mutants. Flower hormone profiling, in addition, indicated a modi- fication of gibberellin homeostasis and a strong disturbance of the turnover of jasmonic acid derivatives. Petal growth was partially restored by the active gibberellin GA3 or the functional analog of jasmonoyl-isoleucine, coronatine. CYP715 appears to function as a key regulator of flower maturation, synchronizing petal expan- sion and volatile emission. It is thus expected to be an important determinant of flower-insect interaction.

关键词： flower development phylogenomics negative selection jasmonate gibberellins volatile compounds

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