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Llaguno N, Gallo C, Guglielmi V, Amaral F, Tsunemi M, Pedrazzoli M, Pinheiro E, Avelar A. Analysis of total rest time and urinary melatonin secretion in school children. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.643] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ribeiro AS, Avelar A, Dos Santos L, Silva AM, Gobbo LA, Schoenfeld BJ, Sardinha LB, Cyrino ES. Hypertrophy-type Resistance Training Improves Phase Angle in Young Adult Men and Women. Int J Sports Med 2016; 38:35-40. [PMID: 27793064 DOI: 10.1055/s-0042-102788] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The main purpose of the present study was to investigate the effect of a hypertrophy-type resistance training protocol on phase angle, an indicator of cellular integrity, in young adult men and women. 28 men (22.2±4.3 years, 67.8±9.0 kg and 174.2±6.8 cm) and 31 women (23.2±4.1 years, 58.7±12.1 kg and 162.7±6.4 cm) underwent a progressive RT for 16 weeks (2 phases, 8 weeks each), 3 times per week, consisting of 10 to 12 whole body exercises with 3 sets of 8-12 repetitions maximum. Phase angle, resistance, reactance and total body water (intra and extracellular water compartments) were assessed by bioimpedance spectroscopy (Xitron 4200 Bioimpedance Spectrum Analyzer). Total body water, intracellular water and phase angle increased significantly (P<0.05) in men (7.8, 8.3, and 4.3%, respectively) and women (7.6, 11.7, and 5.8% respectively), with no significant difference between sexes (P>0.05). Bioimpedance resistance decreased (P<0.05) similarly in both sex (men=-4.8%, women=-3.8%). The results suggest that regardless of sex, progressive RT induces an increase in phase angle and a rise in cellular hydration.
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Affiliation(s)
- A S Ribeiro
- Metabolism, Nutrition, and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, Brazil
| | - A Avelar
- Department of Physical Education, Center of Health Sciences, Maringá State University, Maringá, Brazil
| | - L Dos Santos
- Metabolism, Nutrition, and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, Brazil
| | - A M Silva
- Exercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz-Quebrada, Portugal
| | - L A Gobbo
- Department of Physical Education, São Paulo State University, Presidente Prudente, São Paulo, Brazil
| | - B J Schoenfeld
- Exercise Science Department, CUNY Lehman College, Bronx, New York, USAl
| | - L B Sardinha
- Exercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz-Quebrada, Portugal
| | - E S Cyrino
- Metabolism, Nutrition, and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, Brazil
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Anderson CD, Moisyadi S, Avelar A, Walton CB, Shohet RV. Ultrasound-targeted hepatic delivery of factor IX in hemophiliac mice. Gene Ther 2016; 23:510-9. [PMID: 26960037 PMCID: PMC4891223 DOI: 10.1038/gt.2016.23] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 01/27/2016] [Accepted: 02/01/2016] [Indexed: 01/16/2023]
Abstract
Ultrasound-targeted microbubble destruction (UTMD) was used to direct the delivery of plasmid and transposase-based vectors encoding human factor IX (hFIX) to the livers of hemophilia B (FIX−/−) mice. The DNA vectors were incorporated into cationic lipid microbubbles, injected intravenously, and transfected into hepatocytes by acoustic cavitation of the bubbles as they transited the liver. Ultrasound parameters were identified that produced transfection of hepatocytes in vivo without substantial damage or bleeding in the livers of the FIX-deficient mice. These mice were treated with a conventional expression plasmid, or one containing a piggyBac transposon construct, and hFIX levels in the plasma and liver were evaluated at multiple time points after UTMD. We detected hFIX in the plasma by western blotting from mice treated with either plasmid during the 12 days after UTMD, and in the hepatocytes of treated livers by immunofluorescence. Reductions in clotting time and improvements in the percentage of FIX activity were observed for both plasmids, conventional (4.15±1.98%), and transposon based (2.70±.75%), 4 to 5 days after UTMD compared with untreated FIX (−/−) control mice (0.92±0.78%) (P=0.001 and P=0.012, respectively). Reduced clotting times persisted for both plasmids 12 days after treatment (reflecting percentage FIX activity of 3.12±1.56%, P=0.02 and 3.08±0.10%, P=0.001, respectively). Clotting times from an additional set of mice treated with pmGENIE3-hFIX were evaluated for long-term effects and demonstrated a persistent reduction in average clotting time 160 days after a single treatment. These data suggest that UTMD could be a minimally invasive, nonviral approach to enhance hepatic FIX expression in patients with hemophilia.
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Affiliation(s)
- C D Anderson
- Department of Cellular and Molecular Biology, John A. Burns School of Medicine, Honolulu, HI, USA
| | - S Moisyadi
- Department of Anatomy, Biochemistry and Physiology, John A. Burns School of Medicine, Honolulu, HI, USA
| | - A Avelar
- Department of Medicine, John A. Burns School of Medicine, Honolulu, HI, USA
| | - C B Walton
- Department of Medicine, John A. Burns School of Medicine, Honolulu, HI, USA
| | - R V Shohet
- Department of Medicine, John A. Burns School of Medicine, Honolulu, HI, USA
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Oliveira R, Vitor da Costa M, Pedro R, Polito M, Avelar A, Cyrino E, Nakamura F. Acute cardiac autonomic responses after a bout of resistance exercise. Sci Sports 2012. [DOI: 10.1016/j.scispo.2011.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gobbo L, Ritti-Dias R, Avelar A, Silva A, Coelho-e-Silva M, Cyrino E. Changes in Skeletal Muscle Mass Assessed by Anthropometric Equations after Resistance Training. Int J Sports Med 2012; 34:28-33. [PMID: 22791616 DOI: 10.1055/s-0032-1316312] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- L. Gobbo
- School of Public Health, University of São Paulo, Brazil
| | - R. Ritti-Dias
- School of Physical Education, University of Pernambuco, Recife, Brazil
| | - A. Avelar
- Physical Education and Sport Center, Londrina State University, Londrina, Brazil
| | - A. Silva
- Exercise and Health Laboratory, Faculty of Human Kinetics, Technical University of Lisbon, Portugal
| | - M. Coelho-e-Silva
- Faculty of Sport Sciences and Physical Education, University of Coimbra, Portugal
| | - E. Cyrino
- Physical Education and Sport Center, Londrina State University, Londrina, Brazil
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Minor DL, Lin YF, Mobley BC, Avelar A, Jan YN, Jan LY, Berger JM. The polar T1 interface is linked to conformational changes that open the voltage-gated potassium channel. Cell 2000; 102:657-70. [PMID: 11007484 DOI: 10.1016/s0092-8674(00)00088-x] [Citation(s) in RCA: 153] [Impact Index Per Article: 6.4] [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: 11/19/2022]
Abstract
Kv voltage-gated potassium channels share a cytoplasmic assembly domain, T1. Recent mutagenesis of two T1 C-terminal loop residues implicates T1 in channel gating. However, structural alterations of these mutants leave open the question concerning direct involvement of T1 in gating. We find in mammalian Kv1.2 that gating depends critically on residues at complementary T1 surfaces in an unusually polar interface. An isosteric mutation in this interface causes surprisingly little structural alteration while stabilizing the closed channel and increasing the stability of T1 tetramers. Replacing T1 with a tetrameric coiled-coil destabilizes the closed channel. Together, these data suggest that structural changes involving the buried polar T1 surfaces play a key role in the conformational changes leading to channel opening.
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Affiliation(s)
- D L Minor
- Howard Hughes Medical Institute and Department of Physiology, University of California, San Francisco 94143, USA.
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