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71.
RD Calixto R Verlengia AH Crisp TB Carvalho MD Crepaldi AA Pereira AK Yamada GR da Mota CR Lopes 《Biology of sport / Institute of Sport》2014,31(4):289-294
This study aimed to compare the effects of different velocities of eccentric muscle actions on acute blood lactate and serum growth hormone (GH) concentrations following free weight bench press exercises performed by resistance-trained men. Sixteen healthy men were divided into two groups: slow eccentric velocity (SEV; n = 8) and fast eccentric velocity (FEV; n = 8). Both groups performed four sets of eight eccentric repetitions at an intensity of 70% of their one repetition maximum eccentric (1RMecc) test, with 2-minute rest intervals between sets. The eccentric velocity was controlled to 3 seconds per range of motion for SEV and 0.5 seconds for the FEV group. There was a significant difference (P < 0.001) in the kinetics of blood lactate removal (at 3, 6, 9, 15, and 20 min) and higher mean values for peak blood lactate (P = 0.001) for the SEV group (9.1 ± 0.5 mM) compared to the FEV group (6.1 ± 0.4 mM). Additionally, serum GH concentrations were significantly higher (P < 0.001) at 15 minutes after bench press exercise in the SEV group (1.7 ± 0.6 ng · mL−1) relative to the FEV group (0.1 ± 0.0 ng · mL−1). In conclusion, the velocity of eccentric muscle action influences acute responses following bench press exercises performed by resistance-trained men using a slow velocity resulting in a greater metabolic stress and hormone response. 相似文献
72.
Brian T. Gaudette Neal N. Iwakoshi Lawrence H. Boise 《The Journal of biological chemistry》2014,289(34):23629-23640
Although it is known that the unfolded protein response (UPR) plays a significant role in the process of plasma cell differentiation, the contribution of the individual sensors of the UPR to this process remains unclear. In this study we examine the death signals and compensatory survival signals activated during B cell activation and the first stages of plasma cell differentiation. During in vitro differentiation of both primary murine B cells and the Bcl1 cell line, we demonstrate that in addition to activation of the physiological UPR, changes in the expression of several Bcl-2 proteins occur, which are consistent with a lowering of the apoptotic threshold of the cell. Specifically, we observed decreased expression of Bcl-2 and Mcl-1 and increased expression of the proapoptotic protein Bim. However, these changes were countered by Bcl-xL induction, which is necessary to protect differentiating cells both from ER stress-induced death by tunicamycin and from the death signals inherent in differentiation. Consistent with differentiating cells becoming dependent on Bcl-xL for survival, the addition of ABT-737 resulted in apoptosis in differentiating cells through the inhibition of sequestration of Bim. Confirming this result, differentiation in the context of RNAi-mediated Bcl-xL knockdown also induced apoptosis. This cell death is C/EBP homologous protein (CHOP)-dependent, connecting these events to the UPR. Thus plasma cell differentiation proceeds through a Bcl-xL-dependent intermediate. 相似文献
73.
Stéphane Raeppel Frédéric Gaudette Michael Mannion Stephen Claridge Oscar Saavedra Ljubomir Isakovic Robert Déziel Normand Beaulieu Carole Beaulieu Isabelle Dupont Hannah Nguyen James Wang A. Robert Macleod Christiane Maroun Jeffrey M. Besterman Arkadii Vaisburg 《Bioorganic & medicinal chemistry letters》2010,20(9):2745-2749
A novel series of N-(3-fluoro-4-(2-substituted-thieno[3,2-b]pyridin-7-yloxy)phenyl)-1-phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxamides targeting RON receptor tyrosine kinase was designed and synthesized. SAR study of the series allowed us to identify compounds possessing either inhibitory activity of RON kinase enzyme in the low nanomolar range with low residual activity against the closely related c-Met or potent dual inhibitory activity against RON and c-Met, ? with no significant activity against VEGFR2 in both cases. 相似文献
74.
J W Kendall D K Gray N D Gaudette 《Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine (New York, N.Y.)》1976,152(4):691-694
The ACTH-releasing activity of hypothalamic extract and rat plasma was examined with the dispersed rat pituitary cell technique of Swallow and Sayer (8). Although both plasma and serum caused ACTH release which was dose-related, stress did not enhance the ACTH releasing activity. Furthermore, separation studies of plasma using ultrafiltration and gel separation suggest that the CRF activity in plasma is associated with molecules of a molecular weight greater than 15,000. 相似文献
75.
Jyothi K. Rajashekar Jonathan Richard Jagadish Beloor Jérémie Prévost Sai Priya Anand Guillaume Beaudoin-Bussières Liang Shan Dietmar Herndler-Brandstetter Gabrielle Gendron-Lepage Halima Medjahed Catherine Bourassa Fleur Gaudette Irfan Ullah Kelly Symmes Andrew Peric Emily Lindemuth Frederic Bibollet-Ruche Jun Park Priti Kumar 《Cell host & microbe》2021,29(6):904-916.e6
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76.
Character state‐based taxa erected to accommodate fossil and extant needle stoneflies (Leuctridae – Leuctrida tax.n.) and close relatives
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OLIVIER BÉTHOUX BORIS KONDRATIEFF FRIÐGEIR GRÍMSSON ERLING ÓLAFSSON TORSTEN WAPPLER 《Systematic Entomology》2015,40(2):322-341
In order to accommodate a newly discovered fossil specimen related to a subset of extant needle stoneflies (Leuctridae sensu Zwick, 2000), we provide a comparative analysis of the wing venation of these insects, and of their close relatives, primarily based on extant material. A number of character states potentially supporting monophyletic taxa are identified, and are used to erect taxon names under the cladotypic nomenclatural procedure. We introduce a new standard definition in which the mention of the antonym of the defining character state is applied. The proposed taxa, and taxa inclusiveness, are as follows: Nemouromorpha > Capniida/Leuctrida/‘Nemouridae s.l.’, and Leuctrida > Exeleuctrida > Mioleuctrida & Eleuctrida > Collaleuctrida. This scheme allowed us to tentatively accommodate several fossil species described earlier and the new specimen, left undetermined at the genus and species levels, but assigned to Collaleuctrida. To optimize retrieval of hierarchical information, we introduce the use of ‘nec’ (Latin for ‘but not’) into the taxonomic address to indicate exclusion from a taxon. For example, Mioleuctrida nec Collaleuctrida ?yehae indicates that ?yehae can be assigned to Mioleuctrida but can also be conclusively excluded from Collaleuctrida. Based on the investigated case, it is finally argued that the cladotypic nomenclatural procedure is optimal regarding name use and numbers, and allows adequate treatment of homoplasy. 相似文献