keyword
MENU ▼
Read by QxMD icon Read
search

aging yeast

keyword
https://www.readbyqxmd.com/read/28544360/impairment-of-insulin-signalling-in-peripheral-tissue-fails-to-extend-murine-lifespan
#1
Troy L Merry, Doreen Kuhlow, Beate Laube, Doris Pöhlmann, Andreas F H Pfeiffer, C Ronald Kahn, Michael Ristow, Kim Zarse
Impaired insulin/IGF1 signalling has been shown to extend lifespan in model organisms ranging from yeast to mammals. Here we sought to determine the effect of targeted disruption of the insulin receptor (IR) in non-neuronal tissues of adult mice on the lifespan. We induced hemizygous (PerIRKO(+/-) ) or homozygous (PerIRKO(-/-) ) disruption of the IR in peripheral tissue of 15-weeks-old mice using a tamoxifen-inducible Cre transgenic mouse with only peripheral tissue expression, and subsequently monitored glucose metabolism, insulin signalling and spontaneous death rates over 4 years...
May 22, 2017: Aging Cell
https://www.readbyqxmd.com/read/28538846/-clinical-and-microbiological-study-of-catheter-associated-urinary-tract-infections-in-internal-medicine-services-of-a-venezuelan-university-hospital
#2
Pedro Quijada-Martínez, Ana Flores-Carrero, Indira Labrador, María Araque
Objectives: To determine the clinical and microbiological characteristics of catheter-associated urinary tract infections (CA-UTI) in patients admitted to the Internal Medicine services of the Hospital Universitario de Los Andes (HULA), Mérida, Venezuela and to establish the clonal distribution of multi-resistant Enterobacteriaceae that produce this infection. Materials and Methods: Seventy-three adult patients with bladder catheterization were studied between January and July 2015...
January 2017: Revista Peruana de Medicina Experimental y Salud Pública
https://www.readbyqxmd.com/read/28534953/proteomic-analysis-of-differentially-expressed-proteins-in-kidneys-of-brain-dead-rabbits
#3
Ling Li, Ning Li, Chongxiang He, Wei Huang, Xiaoli Fan, Zibiao Zhong, Yanfeng Wang, Qifa Ye
A large number of previous clinical studies have reported a delayed graft function for brain dead donors, when compared with living relatives or cadaveric organ transplantations. However, there is no accurate method for the quality evaluation of kidneys from brain‑dead donors. In the present study, two‑dimensional gel electrophoresis and MALDI‑TOF MS‑based comparative proteomic analysis were conducted to profile the differentially‑expressed proteins between brain death and the control group renal tissues...
May 19, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28523294/autophagy-in-aging-and-disease
#4
Mădălina Fîlfan, Raluca Elena Sandu, Alexandra Daniela Zăvăleanu, Andrei GreşiŢă, Daniela Gabriela Glăvan, Denissa Greta Olaru, Aurel Popa-Wagner
Autophagy is a catabolic degradation system used to destroy and recycle the unnecessary or damaged components of a cell. Autophagy is present at a basal level in all mammals and is regulated by some conditions, such as oxidative stress, starvation or hypoxia. In aged tissues, increased but also decreased expression of autophagy-specific proteins, Beclin 1, LC3, Atg5 and Atg7 has been reported. Likewise, it could be shown that the lifespan of yeast, nematodes and flies is prolonged by pharmacologically stimulated autophagy using exogenous administered spermidine...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28520879/phylogenetic-relationship-and-ftir-spectroscopy-derived-lipid-determinants-of-lifespan-parameters-in-the-saccharomyces-cerevisiae-yeast
#5
Mateusz Molon, Jacek Zebrowski
Yeast aging has been gaining much attention in gerontology research, yet the process itself is still not entirely clear. One of the constraints related to the use of the Saccharomyces cerevisiae yeast in studies is the ambiguity of the results concerning aging determinants for different genetic backgrounds. In this paper, we compare reproductive potentials and lifespans of seven widely used haploid laboratory strains differing in daughter cells production capabilities and highlight the importance of choosing an appropriate genotype for the studies on aging...
May 17, 2017: FEMS Yeast Research
https://www.readbyqxmd.com/read/28508335/toxic-potential-of-organic-constituents-of-submicron-particulate-matter-pm1-in-an-urban-road-site-barcelona
#6
Sofia R Mesquita, Barend L van Drooge, Manuel Dall'Osto, Joan O Grimalt, Carlos Barata, Natividade Vieira, Laura Guimarães, Benjamin Piña
Atmospheric particulate matter (PM) is a recognized risk factor contributing to a number of diseases in human populations and wildlife globally. Organic matter is a major component of PM, but its contribution to overall toxicity of PM has not been thoroughly evaluated yet. In the present work, the biological activity of organic extracts from PM1 (particles with less than 1 μm of aerodynamic diameter) collected from an urban road site in the centre of Barcelona (NE Spain) was evaluated using a yeast-based assay (AhR-RYA) and different gene expression markers in zebrafish embryos...
May 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28503907/proteomics-analysis-for-asymmetric-inheritance-of-preexisting-proteins-between-mother-and-daughter-cells-in-budding-yeast
#7
Mitsuhiro Okada, Shunta Kusunoki, Yuko Ishibashi, Keiji Kito
In budding yeast, a mother cell can produce a finite number of daughter cells over its life. The accumulation of a variety of types of damaged components has an impact on the aging process. Asymmetrical inheritance during cell division causes these aberrant intracellular constituents to be retained in mother cells and prevents them from segregating to daughter cells. However, the understanding of asymmetrical inheritance of individual proteins that are damaged or old age, and their relevance to the aging process, has been limited...
May 15, 2017: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/28502807/augmenting-brain-metabolism-to-increase-macro-and-chaperone-mediated-autophagy-for-decreasing-neuronal-proteotoxicity-and-aging
#8
REVIEW
Ben Loos, Daniel J Klionsky, Esther Wong
Accumulation of toxic protein aggregates in the nerve cells is a hallmark of neuronal diseases and brain aging. Mechanisms to enhance neuronal surveillance to improve neuronal proteostasis have a direct impact on promoting neuronal health and forestalling age-related decline in brain function. Autophagy is a lysosomal degradative pathway pivotal for neuronal protein quality control. Different types of autophagic mechanisms participate in protein handling in neurons. Macroautophagy targets misfolded and aggregated proteins in autophagic vesicles to the lysosomes for destruction, while chaperone-mediated autophagy (CMA) degrades specific soluble cytosolic proteins delivered to the lysosomes by chaperones...
May 11, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28491253/isolation-molecular-identification-and-antifungal-susceptibility-profiles-of-vaginal-isolates-of-candida-species
#9
Ali Rezaei-Matehkolaei, Shokoofe Shafiei, Ali Zarei-Mahmoudabadi
BACKGROUND AND OBJECTIVES: Vulvovaginal candidiasis is a common fungal infection among women during reproductive ages. Although, Candida albicans is accounted as the main etiologic agent of vaginitis, non-albicans species have arisen during last years. Resistant to antifungal drugs especially, fluconazole has been more reported by researchers from around the World. The aims of this study were to determine the prevalence of vulvovaginal candidiasis among suspected patients with vaginitis, the frequency of Candida species, and the susceptibility profiles of isolates to caspofungin, fluconazole and clotrimazole...
December 2016: Iranian Journal of Microbiology
https://www.readbyqxmd.com/read/28489916/generational-distribution-of-a-candida-glabrata-population-resilient-old-cells-prevail-while-younger-cells-dominate-in-the-vulnerable-host
#10
Tejas Bouklas, Luz Alonso-Crisóstomo, Tamás Székely, Elizabeth Diago-Navarro, Erika P Orner, Kalie Smith, Mansa A Munshi, Maurizio Del Poeta, Gábor Balázsi, Bettina C Fries
Similar to other yeasts, the human pathogen Candida glabrata ages when it undergoes asymmetric, finite cell divisions, which determines its replicative lifespan. We sought to investigate if and how aging changes resilience of C. glabrata populations in the host environment. Our data demonstrate that old C. glabrata are more resistant to hydrogen peroxide and neutrophil killing, whereas young cells adhere better to epithelial cell layers. Consequently, virulence of old compared to younger C. glabrata cells is enhanced in the Galleria mellonella infection model...
May 10, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28487947/high-expression-levels-of-the-d686n-parkinson-s-disease-mutation-in-vps35-induces-%C3%AE-synuclein-dependent-toxicity-in-yeast
#11
Yi Huang, Xiang Chen, Xiaofei He, Caifeng Guo, Xicui Sun, Fengyin Liang, Simei Long, Xilin Lu, Luyang Feng, Wenyuan Guo, Yixuan Zeng, Zhong Pei
Parkinson's disease (PD) is a common neurodegenerative disorder that affects ~2% of the human population aged >65. α‑synuclein serves a role in the pathogenesis of PD as it is a primary component of Lewy bodies, a pathological feature of PD. Endosomal‑lysosomal dysfunction may be a key factor involved in the pathophysiology of PD, and may cause PD‑associated neurodegeneration via α‑synuclein‑dependent and ‑independent mechanisms. The D620N mutation in the endosomal‑lysosomal gene, vacuolar protein sorting‑associated protein 35 (VPS35), has been linked to PD...
May 9, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28482836/assessment-of-herbal-drugs-for-promising-anti-candida-activity
#12
Sameh S M Soliman, Mohammad H Semreen, Ali A El-Keblawy, Arbab Abdullah, Priya Uppuluri, Ashraf S Ibrahim
BACKGROUND: Microbial infections are diverse and cause serious human diseases. Candida albicans infections are serious healthcare-related infections that are complicated by its morphological switching from yeast to hyphae, resistant biofilm formation and mixed infections with bacteria. Due to the increase in drug resistance to currently used antimicrobial agents and the presence of undesirable side effects, the need for safe and effective novel therapies is important. Compounds derived from plants are known for their medicinal properties including antimicrobial activities...
May 8, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28480847/microbiological-aspects-of-the-orthodontic-treatment
#13
A Zharmagambetova, S Tuleutayeva, S Akhmetova, A Zharmagambetov
An orthodontic appliance in the mouth worsens conditions for its self-cleaning, complicates the teeth care and makes an environment favorable to the soft tooth deposit, in turn, leads to the teeth enamel demineralization. In literature, the majority of works are devoted to the study of the microbial landscape with fixed orthodontic treatment. Despite the obvious relevance, the formation problem of opportunistic and pathogenic microorganisms when treating dentoalveolar anomalies with a removable orthodontic appliance remains understudied...
March 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28466286/fabrication-of-cyclo-olefin-polymer-microfluidic-devices-for-trapping-and-culturing-of-yeast-cells
#14
Sevde Puza, Elif Gencturk, Irem E Odabasi, Emre Iseri, Senol Mutlu, Kutlu O Ulgen
A microfluidic platform is designed and fabricated to investigate the role of uncharacterized YOR060C (Sld7) protein in aging in yeast cells for the first time. Saccharomyces cerevisiae yeast cells are trapped in the series of C-shaped regions (0.5 nL) of COP (cyclo olefin polymer), PMMA (poly methylmethacrylate), or PS (polystyrene) microbioreactors. The devices are fabricated using hot embossing and thermo-compression bonding methods. Photolithography and electrochemical etching are used to form the steel mold needed for hot embossing...
June 2017: Biomedical Microdevices
https://www.readbyqxmd.com/read/28460958/efficiency-of-population-dependent-sulfite-against-brettanomyces-bruxellensis-in-red-wine
#15
Cédric Longin, Claudine Degueurce, Frédérique Julliat, Michèle Guilloux-Benatier, Sandrine Rousseaux, Hervé Alexandre
Brettanomyces bruxellensis is considered as a spoilage yeast encountered mainly in red wine. It is able to reduce vinylphenols from phenolic acids to ethylphenols. These volatiles are responsible for the phenolic "Brett character" described as animal, farm, horse sweat and animal leather odors. Other molecules are responsible for organoleptic deviations described as "mousiness taint". SO2 is the product most often used by winemakers to prevent B. bruxellensis growth. Usually, the recommended molecular dose of SO2 (active SO2, mSO2) is highly variable, from 0...
November 2016: Food Research International
https://www.readbyqxmd.com/read/28450458/the-mitotic-exit-network-regulates-spindle-pole-body-selection-during-sporulation-of-saccharomyces-cerevisiae
#16
Christian Renicke, Ann-Katrin Allmann, Anne Pia Lutz, Thomas Heimerl, Christof Taxis
Age-based inheritance of centrosomes in eukaryotic cells is associated with faithful chromosome distribution in asymmetric cell divisions. During Saccharomyces cerevisiae ascospore formation, such an inheritance mechanism targets the yeast centrosome equivalents, the spindle pole bodies at meiosis II onset. Decreased nutrient availability causes initiation of spore formation at only the younger spindle pole bodies and their associated genomes. This mechanism ensures encapsulation of non-sister genomes, which preserves genetic diversity and provides a fitness advantage at population level...
April 26, 2017: Genetics
https://www.readbyqxmd.com/read/28448590/significant-changes-in-circulating-microrna-by-dietary-supplementation-of-selenium-and-coenzyme-q10-in-healthy-elderly-males-a-subgroup-analysis-of-a-prospective-randomized-double-blind-placebo-controlled-trial-among-elderly-swedish-citizens
#17
Urban Alehagen, Peter Johansson, Jan Aaseth, Jan Alexander, Dick Wågsäter
BACKGROUND: Selenium and coenzyme Q10 is essential for important cellular functions. A low selenium intake is reported from many European countries, and the endogenous coenzyme Q10 production is decreasing in the body with increasing age. Supplementation with selenium and coenzyme Q10 in elderly have shown reduced cardiovascular mortality and reduced levels of markers of inflammation. However, microRNA analyses could give important information on the mechanisms behind the clinical effects of supplementation...
2017: PloS One
https://www.readbyqxmd.com/read/28448036/using-microfluidic-devices-to-measure-lifespan-and-cellular-phenotypes-in-single-budding-yeast-cells
#18
Ke Zou, Diana S Ren, Qi Ou-Yang, Hao Li, Jiashun Zheng
Budding yeast Saccharomyces cerevisiae is an important model organism in aging research. Genetic studies have revealed many genes with conserved effects on the lifespan across species. However, the molecular causes of aging and death remain elusive. To gain a systematic understanding of the molecular mechanisms underlying yeast aging, we need high-throughput methods to measure lifespan and to quantify various cellular and molecular phenotypes in single cells. Previously, we developed microfluidic devices to track budding yeast mother cells throughout their lifespan while flushing away newborn daughter cells...
March 30, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28447071/the-effects-of-reduced-rpd3-levels-on-fly-physiology
#19
Jared K Woods, Tahereh Ziafazeli, Blanka Rogina
BACKGROUND: Rpd3 is a conserved histone deacetylase that removes acetyl groups from lysine residues within histones and other proteins. Reduction or inhibition of Rpd3 extends longevity in yeast, worms, and flies. Previous studies in flies suggest an overlap with the mechanism of lifespan extension by dietary restriction. However, the mechanism of rpd3's effects on longevity remains unclear. OBJECTIVES: In this study we investigated how rpd3 reduction affects fly spontaneous physical activity, fecundity, and stress resistance...
March 31, 2017: Nutrition and Healthy Aging
https://www.readbyqxmd.com/read/28444510/starvation-signals-in-yeast-are-integrated-to-coordinate-metabolic-reprogramming-and-stress-response-to-ensure-longevity
#20
REVIEW
Nianshu Zhang, Lu Cao
Studies on replicative and chronological aging in Saccharomyces cerevisiae have greatly advanced our understanding of how longevity is regulated in all eukaryotes. Chronological lifespan (CLS) of yeast is defined as the age-dependent viability of non-dividing cell populations. A number of nutrient sensing and signal transduction pathways (mainly TOR and PKA) have been shown to regulate CLS, yet it is poorly understood how the starvation signals transduced via these pathways lead to CLS extension. Using reporters whose expressions are induced by glucose starvation, we have screened the majority of the 'signaling' mutants in the yeast genome and identified many genes that are necessary for stress response...
April 25, 2017: Current Genetics
keyword
keyword
100776
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"