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Longevity

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https://www.readbyqxmd.com/read/28646827/immunization-of-c57bl-6-mice-with-gra2-combined-with-mpl-conferred-partial-immune-protection-against-toxoplasma-gondii
#1
Jalal Babaie, Samira Amiri, Robab Homayoun, Ebrahim Azimi, Reyhaneh Mohabati, Mahboobe Berizi, Reza Sadaie, Majid Golkar
Background: We have previously reported that immunization with GRA2 antigen of Toxoplasma gondii induces protective immunity in CBA/J (H2k) and BALB/c mice (H2d). We aimed to examine whether immunization of a distinct strain of rodent with recombinant dense granule antigens (GRA2) combined with monophosphorryl lipid A (MPL) adjuvant elicits protective immune response against T. gondii. Methods: C57BL/6 (H2b haplotype) mice were immunized with GRA2, formulated in MPL adjuvant...
June 25, 2017: Iranian Biomedical Journal
https://www.readbyqxmd.com/read/28646622/dormancy-cycles-in-buried-seeds-of-three-perennial-xyris-xyridaceae-species-from-the-brazilian-campo-rupestre
#2
T G S Oliveira, I P Diamantino, Q S Garcia
Seed dormancy cycles are an important mechanism for avoiding germination under unfavorable periods for seedling establishment. This mechanism has been scarcely studied in tropical species. Here, we studied three tropical and perennial species of Xyris, X. asperula, X. subsetigera and X. trachyphylla, to investigate in situ longevity and the existence of seasonal seed dormancy cycles. Seeds of three species of Xyris were buried in their natural habitat with samples exhumed bimonthly for 18 months. Germination of exhumed seeds was assessed under a 12h-photoperiod over a broad range of temperatures...
June 24, 2017: Plant Biology
https://www.readbyqxmd.com/read/28646299/effective-combined-water-and-sideband-suppression-for-low-speed-tissue-and-in-vivo-mas-nmr
#3
Yalda Liaghati Mobarhan, Jochem Struppe, Blythe Fortier-McGill, André J Simpson
High-resolution magic angle spinning (HR-MAS) NMR is a powerful technique that can provide metabolic profiles and structural constraints on intact biological and environmental samples such as cells, tissues and living organisms. However, centripetal force from fast spinning can lead to a loss of sample integrity. In analyses focusing on structural organization, metabolite compartmentalization or in vivo studies, it is critical to keep the sample intact. As such, there is growing interest in slow spinning studies that preserve sample longevity...
June 23, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28646164/regulation-of-drosophila-lifespan-by-bellwether-promoter-alleles
#4
Júlia Frankenberg Garcia, Mary Anna Carbone, Trudy F C Mackay, Robert R H Anholt
Longevity varies among individuals, but how natural genetic variation contributes to variation in lifespan is poorly understood. Drosophila melanogaster presents an advantageous model system to explore the genetic underpinnings of longevity, since its generation time is brief and both the genetic background and rearing environment can be precisely controlled. The bellwether (blw) gene encodes the α subunit of mitochondrial ATP synthase. Since metabolic rate may influence lifespan, we investigated whether alternative haplotypes in the blw promoter affect lifespan when expressed in a co-isogenic background...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28645550/intermediate-to-long-term-longevity-and-incidence-of-revision-of-the-modified-brostr%C3%A3-m-gould-procedure-for-lateral-ankle-ligament-repair-a-systematic-review
#5
REVIEW
Eric So, Nathaniel Preston, Timothy Holmes
The Broström-Gould procedure is an effective procedure for chronic lateral ankle instability. However, long-term studies are limited, and the durability of this procedure remains unclear. A systematic review of the published data was undertaken to determine the outcomes and incidence of revision after long-term follow-up. Eleven studies involving 669 Broström-Gould procedures met the inclusion criteria. The revision rate was 1.2% at a weighted mean follow-up period of 8.4 years. Our systematic review of the available data revealed that the Broström-Gould procedure results in low revision rates for chronic lateral ankle instability...
June 20, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28643623/the-genomic-basis-of-lactobacilli-as-health-promoting-organisms
#6
Elisa Salvetti, Paul W O'Toole
Lactobacilli occupy a unique position in human culture and scientific history. Like brewer's and baker's yeast, lactobacilli have been associated with food production and preservation for thousands of years. Lactobacillus species are used in mixed microbial cultures, such as the classical Lactobacillus bulgaricus/Streptococcus thermophilus inoculum for yogurt fermentation, or combinations of diverse lactobacilli/yeasts in kefir grains. The association of lactobacilli consumption with greater longevity and improved health formed the basis for developing lactobacilli as probiotics, whose market has exploded worldwide in the past 10 years...
June 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28642558/no-differences-in-longevity-of-direct-and-indirect-composite-restorations
#7
Marie A Congiusta
Data sourcesMedline, Cochrane Library, Web of Science, Scopus, Latin American and Caribbean Health Sciences (LILACS), Brazilian Library of Dentistry (BBO), clinicaltrials.gov and SIGLE databases.Study selectionOnly randomised clinical trials were considered that compared direct vs indirect composite restorations, with or without cusp involvement, having a follow-up period of two years or greater.Data extraction and synthesisTwo reviewers selected studies for inclusion, abstracted data and assessed risk of bias...
June 23, 2017: Evidence-based Dentistry
https://www.readbyqxmd.com/read/28641508/is-longevity-a-heritable-trait-evidence-for-non-genomic-influence-from-an-extended-longevity-phenotype-of-drosophila-melanogaster
#8
S Deepashree, Thimmappa Shivanandappa, Saraf R Ramesh
BACKGROUND: Although genetic variations are heritable, some quantitative traits like longevity may have non-genomic influence in heritability. Laboratory-selected inbred strains of extended longevity phenotype of Drosophila offer an opportunity to study the inheritance of longevity. OBJECTIVE: To examine the heritability of longevity in an extended longevity phenotype of Drosophila melanogaster using reciprocal cross effects in F1 and F2 generations. METHODS: Lifespan variations of virgin and mated flies in parent, F1 and F2 generations were investigated using reciprocal crosses between normal and long lifespan lines of inbred population of D...
June 15, 2017: Current Aging Science
https://www.readbyqxmd.com/read/28638560/effects-of-different-percentages-of-microhydroxyapatite-on-microhardness-of-resin-modified-glass-ionomer-and-zirconomer
#9
Farahnaz Sharafeddin, Soodabe Shoale, Mahsa Kowkabi
BACKGROUND: Hydroxyapatite (HA) is the main mineral component of the tooth structure, which exhibits considerable biological behavior and its incorporation might improve microhardness of dental materials. Microhardness of restorative materials, like glass-ionomer, is critical for the clinical longevity of restorations. The aim of this study was to evaluate the microhardness of two glass-ionomers types by incorporating different percentages of microhydroxyapatite. MATERIAL AND METHODS: In this study, 80 disc-shaped experimental specimens (6 mm in diameter, 2 mm in height) were prepared in 8 groups, including resin-modified glass-ionomer (RMGI, GC, Gold Label, Japan), zirconia-reinforced glass-ionomer (Zirconomer, Shofu, Kyoto, Japan), and their mixture with 0, 5, 15 and 25 wt% of microhydroxyapatite (Sigma-Aldrich, Germany)...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28637897/heritability-of-resting-heart-rate-and-association-with-mortality-in-middle-aged-and-elderly-twins
#10
Magnus T Jensen, Mette Wod, Søren Galatius, Jacob B Hjelmborg, Gorm B Jensen, Kaare Christensen
OBJECTIVE: Resting heart rate (RHR) possibly has a hereditary component and is associated with longevity. We used the classical biometric twin study design to investigate the heritability of RHR in a population of middle-aged and elderly twins and, furthermore, studied the association between RHR and mortality. METHODS: In total, 4282 twins without cardiovascular disease were included from the Danish Twin Registry, hereof 1233 twin pairs and 1816 'single twins' (twins with a non-participating co-twin); mean age 61...
June 21, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28637656/benchmarking-life-expectancy-and-cancer-mortality-global-comparison-with-cardiovascular-disease-1981-2010
#11
Bochen Cao, Freddie Bray, Hiram Beltrán-Sánchez, Ophira Ginsburg, Samir Soneji, Isabelle Soerjomataram
Objective To quantify the impact of cancer (all cancers combined and major sites) compared with cardiovascular disease (CVD) on longevity worldwide during 1981-2010.Design Retrospective demographic analysis using aggregated data.Setting National civil registration systems in member states of the World Health Organization.Participants 52 populations with moderate to high quality data on cause specific mortality.Main outcome measures Disease specific contributions to changes in life expectancy in ages 40-84 (LE40-84) over time in populations grouped by two levels of Human Development Index (HDI) values...
June 21, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28637643/cancer-and-the-limits-of-longevity
#12
EDITORIAL
Marie Louise Tørring
No abstract text is available yet for this article.
June 21, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28637252/wheat-seed-weight-and-quality-differ-temporally-in-sensitivity-to-warm-or-cool-conditions-during-seed-development-and-maturation
#13
M Nasehzadeh, R H Ellis
Background and aims: Short periods of extreme temperature may affect wheat ( Triticum aestivum ) seed weight, but also quality. Temporal sensitivity to extreme temperature during seed development and maturation was investigated. Methods: Plants of 'Tybalt' grown at ambient temperature were moved to growth cabinets at 29/20 °C or 34/20 °C (2010), or 15/10 °C or 34/20 °C (2011), for successive 7-d periods from 7 DAA (days after anthesis) onwards, and also 7-65 DAA in 2011...
June 15, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28636171/pulsed-food-resources-but-not-forest-cover-determines-lifetime-reproductive-success-in-a-forest-dwelling-rodent
#14
Katrine S Hoset, Alexandre Villers, Ralf Wistbacka, Vesa Selonen
1.The relative contributions of habitat and food availability on fitness may provide evidence for key habitat features needed to safeguard population persistence. However, defining habitat quality for a species can be a complex task, especially if knowledge on the relationship between individual performance and habitat quality is lacking. 2.Here, we determined the relative importance of availability of suitable forest habitat, body mass, and food from masting tree species on female lifetime reproductive success (LRS) of Siberian flying squirrels (Pteromys volans)...
June 21, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28636161/infinity-sperm-storage-the-gift-that-keeps-on-giving
#15
Gauthier Schang, Beatriz Fernandez-Fuertes, Samantha C Lean, Alexandra L Nguyen, Osvaldo Bogado Pascottini
Female Drosophila retain sperm for up to two weeks post-copulation in a network of storage organs includng the bursa, the seminal receptacle, and the spermathecae. This image shows the seminal receptacle of a Drosophila melanogaster female, 2-hrs post-copulation between a LHM (wild-type) female with a Protamine B (green), β-Tubulin (blue) fluorescently tagged male, whose sperm can be visualized within the female. This 'infinity' structure of the seminal receptacle resembles the tubular coil that allows for the storage of very long sperm relative to female body size -up to 20 times the length of the female in some Drosophila species...
June 21, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28634700/management-of-tuberous-breast-deformities-review-of-long-term-outcomes-and-patient-satisfaction-with-breast-q
#16
Stefania Tenna, Barbara Cagli, Beniamino Brunetti, Mauro Barone, Paolo Persichetti
BACKGROUND: The treatment of a tuberous breast deformity has changed over the years, with a large variety of procedures described. However, maintaining a long-lasting breast contour is an ongoing challenge. The aim of this study was to evaluate the long-term results of tuberous breast corrections, focusing on the incidence of secondary procedures and patient satisfaction. MATERIALS AND METHODS: Forty-six patients who underwent correction of a tuberous breast deformity from 2000 through 2013 were considered...
June 20, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28634029/discovery-of-scors-anciently-derived-highly-conserved-gene-associated-repeats-in-stony-corals
#17
Huan Qiu, Ehud Zelzion, Hollie M Putnam, Ruth D Gates, Nicole E Wagner, Diane K Adams, Debashish Bhattacharya
Stony coral (Scleractinia) genomes are still poorly explored and many questions remain about their evolution and contribution to the success and longevity of reefs. We analyzed transcriptome and genome data from Montipora capitata, Acropora digitifera, and transcriptome data from 20 other coral species. To our surprise, we found highly conserved, anciently derived, Scleractinia COral-specific Repeat families (SCORs) that are abundant in all the studied lineages. SCORs form complex secondary structures and are located in untranslated regions and introns, but most abundant in intergenic DNA...
June 17, 2017: Genomics
https://www.readbyqxmd.com/read/28633458/causes-of-death-and-mortality-trends-of-all-individuals-reported-with-hiv-aids-in-israel-1985-2010
#18
Zohar Mor, Rivka Sheffer, Daniel Chemtob
Background: Highly active antiretroviral therapy (HAART) has changed life-expectancy and mortality trends among people living with HIV/AIDS (PLWHA) since 1996. This retrospective cohort study aimed to assess the mortality epidemiology of PLWHA in Israel and analyze the causes of death. Methods: This cohort study included all adult Israeli-citizens PLWHA between 1985 and 2010 and crossed matched with the Civil Registry to identify those who died. Death certificates were classified into AIDS or non-AIDS deaths related-causes...
June 17, 2017: Journal of Public Health
https://www.readbyqxmd.com/read/28633424/three-dimensional-3d-heparg-spheroid-model-with-physiologically-relevant-xenobiotic-metabolism-competence-and-hepatocyte-functionality-for-liver-toxicity-screening
#19
Sreenivasa C Ramaiahgari, Suramya Waidyanatha, Darlene Dixon, Michael J DeVito, Richard S Paules, Stephen S Ferguson
Effective prediction of human responses to chemical and drug exposure is of critical importance in environmental toxicology research and drug development. While significant progress has been made to address this challenge using in vitro liver models, these approaches often fail due to inadequate tissue model functionality. Herein, we describe the development, optimization, and characterization of a novel three-dimensional (3D) spheroid model using differentiated HepaRG cells that achieve and maintain physiologically-relevant levels of xenobiotic metabolism (CYP1A2, CYP2B6, and CYP3A4/5)...
June 15, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28632756/identification-of-atf-7-and-the-insulin-signaling-pathway-in-the-regulation-of-metallothionein-in-c-elegans-suggests-roles-in-aging-and-reactive-oxygen-species
#20
Julie A Hall, Matthew K McElwee, Jonathan H Freedman
It has been proposed that aging results from the lifelong accumulation of intracellular damage via reactions with reactive oxygen species (ROS). Metallothioneins are conserved cysteine-rich proteins that function as efficient ROS scavengers and may affect longevity. To better understand mechanisms controlling metallothionein expression, the regulatory factors and pathways that controlled cadmium-inducible transcription of the C. elegans metallothionein gene, mtl-1, were identified. The transcription factor ATF-7 was identified in both ethylmethanesulfonate mutagenesis and candidate gene screens...
2017: PloS One
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