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https://www.readbyqxmd.com/read/29452389/parity-associated-with-telomere-length-among-us-reproductive-age-women
#1
A Z Pollack, K Rivers, K A Ahrens
STUDY QUESTION: Is telomere length related to parity among a nationally representative sample of US reproductive age women? SUMMARY ANSWER: History of live birth was associated with shorter telomere length. WHAT IS KNOWN ALREADY: Shorter telomeres have been linked with a range of chronic health conditions and mortality and parity has been associated with health indicators. However, there is a lack of research on how parity relates to telomere length...
February 14, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29451299/low-childhood-subjective-social-status-and-telomere-length-in-adulthood-the-role-of-attachment-orientations
#2
Kyle W Murdock, Annina Seiler, Diana A Chirinos, Luz M Garcini, Sally L Acebo, Sheldon Cohen, Christopher P Fagundes
Low subjective social status (SSS) in childhood places one at greater risk of a number of health problems in adulthood. Theoretical and empirical evidence indicates that exposure to supportive parenting may buffer the negative effects of low childhood SSS on adult health. Given the importance of supportive caregivers and close others for the development of attachment orientations throughout the lifespan, attachment theory may be important for understanding why some individuals are resilient to the negative effects of low childhood SSS on adult health while others are not...
February 16, 2018: Developmental Psychobiology
https://www.readbyqxmd.com/read/29449679/tert-promoter-mutation-in-adult-granulosa-cell-tumor-of-the-ovary
#3
Jessica A Pilsworth, Dawn R Cochrane, Zhouchunyang Xia, Geraldine Aubert, Anniina E M Färkkilä, Hugo M Horlings, Satoshi Yanagida, Winnie Yang, Jamie L P Lim, Yi Kan Wang, Ali Bashashati, Jacqueline Keul, Adele Wong, Kevin Norris, Sara Y Brucker, Florin-Andrei Taran, Bernhard Krämer, Annette Staebler, Esther Oliva, Sohrab P Shah, Stefan Kommoss, Friedrich Kommoss, C Blake Gilks, Duncan M Baird, David G Huntsman
The telomerase reverse transcriptase (TERT) gene is highly expressed in stem cells and silenced upon differentiation. Cancer cells can attain immortality by activating TERT to maintain telomere length and telomerase activity, which is a crucial step of tumorigenesis. Two somatic mutations in the TERT promoter (C228T; C250T) have been identified as gain-of-function mutations that promote transcriptional activation of TERT in multiple cancers, such as melanoma and glioblastoma. A recent study investigating TERT promoter mutations in ovarian carcinomas found C228T and C250T mutations in 15...
February 15, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29449647/the-pro-inflammatory-phenotype-of-the-human-non-classical-monocyte-subset-is-attributed-to-senescence
#4
Siew-Min Ong, Eva Hadadi, Truong-Minh Dang, Wei-Hseun Yeap, Crystal Tze-Ying Tan, Tze-Pin Ng, Anis Larbi, Siew-Cheng Wong
Human primary monocytes comprise a heterogeneous population that can be classified into three subsets based on CD14 and CD16 expression: classical (CD14 high /CD16 - ), intermediate (CD14 high /CD16 + ), and non-classical (CD14 low /CD16 + ). The non-classical monocytes are the most pro-inflammatory in response to TLR stimulation in vitro, yet they express a remarkably high basal level of miR-146a, a microRNA known to negatively regulate the TLR pathway. This concurrence of a pro-inflammatory status and a high miR-146a level has been associated with cellular senescence in other cell types...
February 15, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29449575/actionable-perturbations-of-damage-responses-by-tcl1-atm-and-epigenetic-lesions-form-the-basis-of-t-pll
#5
A Schrader, G Crispatzu, S Oberbeck, P Mayer, S Pützer, J von Jan, E Vasyutina, K Warner, N Weit, N Pflug, T Braun, E I Andersson, B Yadav, A Riabinska, B Maurer, M S Ventura Ferreira, F Beier, J Altmüller, M Lanasa, C D Herling, T Haferlach, S Stilgenbauer, G Hopfinger, M Peifer, T H Brümmendorf, P Nürnberg, K S J Elenitoba-Johnson, S Zha, M Hallek, R Moriggl, H C Reinhardt, M-H Stern, S Mustjoki, S Newrzela, P Frommolt, M Herling
T-cell prolymphocytic leukemia (T-PLL) is a rare and poor-prognostic mature T-cell malignancy. Here we integrated large-scale profiling data of alterations in gene expression, allelic copy number (CN), and nucleotide sequences in 111 well-characterized patients. Besides prominent signatures of T-cell activation and prevalent clonal variants, we also identify novel hot-spots for CN variability, fusion molecules, alternative transcripts, and progression-associated dynamics. The overall lesional spectrum of T-PLL is mainly annotated to axes of DNA damage responses, T-cell receptor/cytokine signaling, and histone modulation...
February 15, 2018: Nature Communications
https://www.readbyqxmd.com/read/29449360/telomere-length-dynamics-and-atherosclerotic-disease
#6
EDITORIAL
Sara Hägg
No abstract text is available yet for this article.
February 16, 2018: Circulation Research
https://www.readbyqxmd.com/read/29447390/pold3-is-required-for-genomic-stability-and-telomere-integrity-in-embryonic-stem-cells-and-meiosis
#7
Zhongcheng Zhou, Lingling Wang, Feixiang Ge, Peng Gong, Hua Wang, Feng Wang, Lingyi Chen, Lin Liu
Embryonic stem cells (ESCs) and meiosis are featured by relatively higher frequent homologous recombination associated with DNA double strand breaks (DSB) repair. Here, we show that Pold3 plays important roles in DSB repair, telomere maintenance and genomic stability of both ESCs and spermatocytes in mice. By attempting to generate Pold3 deficient mice using CRISPR/Cas9 or transcription activator-like effector nucleases, we show that complete loss of Pold3 (Pold3-/-) resulted in early embryonic lethality at E6...
February 13, 2018: Nucleic Acids Research
https://www.readbyqxmd.com/read/29446916/a-smart-dna-tweezer-for-detection-of-human-telomerase-activity
#8
Xiaowen Xu, Lei Wang, Kan Li, Qihong Huang, Wei Jiang
Reliable and accurate detection of telomerase activity is crucial for better understanding its role in cancer cells and further exploring its function in cancer diagnosis and treatment. Here, we construct a smart DNA tweezer (DT) for detection of telomerase activity. The DT is assembled by three specially-designed single-stranded oligonucleotides: a central strand dually-labeled with donor/acceptor fluorophores and two arm strands containing overhangs complementary to telomerase reaction products (TRPs). It can get closed through hybridization with TRPs and get reopen through strand displacement reaction by TRPs' complementary sequences...
February 15, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29445421/evidence-for-a-pre-malignant-cell-line-in-a-skin-biopsy-from-a-patient-with-nijmegen-breakage-syndrome
#9
Raneem Habib, Heidemarie Neitzel, Aurelie Ernst, John K L Wong, Bozenna Goryluk-Kozakiewicz, Antje Gerlach, Ilja Demuth, Karl Sperling, Krystyna Chrzanowska
Background: Nijmegen breakage syndrome is an autosomal recessive disorder characterized by microcephaly, immunodeficiency, hypersensitivity to X-irradiation, and a high predisposition to cancer. Nibrin, the product of the NBN gene, is part of the MRE11/RAD50 (MRN) complex that is involved in the repair of DNA double strand breaks (DSBs), and plays a critical role in the processing of DSBs in immune gene rearrangements, telomere maintenance, and meiotic recombination. NBS skin fibroblasts grow slowly in culture and enter early into senescence...
2018: Molecular Cytogenetics
https://www.readbyqxmd.com/read/29445415/curcumin-and-piperine-supplementation-of-obese-mice-under-caloric-restriction-modulates-body-fat-and-interleukin-1%C3%AE
#10
Taiki Miyazawa, Kiyotaka Nakagawa, Sharon H Kim, Michael J Thomas, Ligi Paul, Jean-Marc Zingg, Gregory G Dolnikowski, Susan B Roberts, Fumiko Kimura, Teruo Miyazawa, Angelo Azzi, Mohsen Meydani
Background: Dietary bioactive compounds capable of improving metabolic profiles would be of great value, especially for overweight individuals undergoing a caloric restriction (CR) regimen. Curcumin (Cur), a possible anti-obesity compound, and piperine (Pip), a plausible enhancer of Cur's bioavailability and efficacy, may be candidate agents for controlling body fat, metabolism and low grade inflammation. Methods: 47 eight-week-old male C57BL/6 mice were fed a high fat diet (HFD) for 23 weeks to induce obesity...
2018: Nutrition & Metabolism
https://www.readbyqxmd.com/read/29444496/a-colorimetric-platform-for-sensitively-differentiating-telomere-dna-with-different-lengths-monitoring-g-quadruplex-and-dsdna-based-on-silver-nanoclusters-and-unmodified-gold-nanoparticles
#11
Fei Qu, Zeqiu Chen, Jinmao You, Cuihua Song
Human telomere DNA plays a vital role in genome integrity control and carcinogenesis as an indication for extensive cell proliferation. Herein, silver nanoclusters (Ag NCs) templated by polymer and unmodified gold nanoparticles (Au NPs) are designed as a new colorimetric platform for sensitively differentiating telomere DNA with different lengths, monitoring G-quadruplex and dsDNA. Ag NCs can produce the aggregation of Au NPs, so the color of Au NPs changes to blue and the absorption peak moves to 700nm. While the telomere DNA can protect Au NPs from aggregation, the color turns to red again and the absorption band blue shift...
February 7, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29444436/shwachman-diamond-syndrome-protein-sbds-maintains-human-telomeres-by-regulating-telomerase-recruitment
#12
Yi Liu, Feng Liu, Yizhao Cao, Huimin Xu, Yangxiu Wu, Su Wu, Dan Liu, Yong Zhao, Zhou Songyang, Wenbin Ma
Shwachman-Diamond syndrome (SDS) is a rare pediatric disease characterized by various systemic disorders, including hematopoietic dysfunction. The mutation of Shwachman-Bodian-Diamond syndrome (SBDS) gene has been proposed to be a major causative reason for SDS. Although SBDS patients were reported to have shorter telomere length in granulocytes, the underlying mechanism is still unclear. Here we provide data to elucidate the role of SBDS in telomere protection. We demonstrate that SBDS deficiency leads to telomere shortening...
February 13, 2018: Cell Reports
https://www.readbyqxmd.com/read/29444308/integration-of-multi-omics-techniques-and-physiological-phenotyping-within-a-holistic-phenomics-approach-to-study-senescence-in-model-and-crop-plants
#13
Dominik K Großkinsky, Syahnada Jaya Syaifullah, Thomas Roitsch
The study of senescence in plants is complicated by diverse levels of temporal and spatial dynamics as well as the impact of external biotic and abiotic factors and crop plant management. Whereas the molecular mechanisms involved in developmentally regulated leaf senescence are very well understood, in particular in the annual model plant species Arabidopsis, senescence of other organs such as the flower, fruit, and root is much less studied as well as senescence in perennials such as trees. This review addresses the need for the integration of multi-omics techniques and physiological phenotyping into holistic phenomics approaches to dissect the complex phenomenon of senescence...
February 12, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29443612/elevated-vasodilatory-cyclases-and-shorter-telomere-length-contribute-to-high-altitude-pulmonary-edema
#14
Manjari Rain, Himanshi Chaudhary, Ritushree Kukreti, Tashi Thinlas, Ghulam Mohammad, Qadar Pasha
Rain, Manjari, Himanshi Chaudhary, Ritushree Kukreti, Tashi Thinlas, Ghulam Mohammad, and Qadar Pasha. Elevated Vasodilatory Cyclases and Shorter Telomere Length Contribute to High-Altitude Pulmonary Edema. High Alt Med Biol. 00:000-000, 2018. AIM: High-altitude (HA) genetics is complex with respect to health and disease (HA pulmonary edema i.e., HAPE). Based on the widely recognized fact that oxidative stress is a major trigger of several physiological processes, this study was designed to establish the significance of vasodilatory cyclases and telomere length in HA physiology...
February 14, 2018: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/29443060/avian-semen-collection-by-cloacal-massage-and-isolation-of-dna-from-sperm
#15
Aurelia C Kucera, Britt J Heidinger
Collection of semen may be useful for a wide range of applications including studies involving sperm quality, sperm telomere dynamics, and epigenetics. Birds are widely used subjects in biological research and are ideal for studies involving repeated sperm samples. However, few resources are currently available for those wishing to learn how to collect and extract DNA from avian sperm. Here we describe cloacal massage, a gentle, non-invasive manual technique for collecting avian sperm. Although this technique is established in the literature, it can be difficult to learn from the available descriptions...
February 5, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29441645/short-telomeres-induce-p53-and-autophagy-and-modulate-age-associated-changes-in-cardiac-progenitor-cell-fate
#16
Collin Matsumoto, Yan Jiang, Jacqueline Emathinger, Pearl Quijada, Nathalie Nguyen, Andrea De La Torre, Maryam Moshref, Jonathan Nguyen, Aimee B Levinson, Minyoung Shin, Mark A Sussman, Nirmala Hariharan
Aging severely limits myocardial repair and regeneration. Delineating the impact of age-associated factors such as short telomeres is critical to enhance the regenerative potential of cardiac progenitor cells (CPCs). We hypothesized that short telomeres activate p53 and induce autophagy to elicit the age-associated change in CPC fate. We isolated CPCs and compared mouse strains with different telomere lengths for phenotypic characteristics of aging. Wild mouse strain Mus musculus castaneus (CAST) possessing short telomeres exhibits early cardiac aging with cardiac dysfunction, hypertrophy, fibrosis and senescence, as compared to common lab strains FVB and C57 bearing longer telomeres...
February 14, 2018: Stem Cells
https://www.readbyqxmd.com/read/29441358/growing-old-yet-staying-young-the-role-of-telomeres-in-bats-exceptional-longevity
#17
Nicole M Foley, Graham M Hughes, Zixia Huang, Michael Clarke, David Jebb, Conor V Whelan, Eric J Petit, Frédéric Touzalin, Olivier Farcy, Gareth Jones, Roger D Ransome, Joanna Kacprzyk, Mary J O'Connell, Gerald Kerth, Hugo Rebelo, Luísa Rodrigues, Sébastien J Puechmaille, Emma C Teeling
Understanding aging is a grand challenge in biology. Exceptionally long-lived animals have mechanisms that underpin extreme longevity. Telomeres are protective nucleotide repeats on chromosome tips that shorten with cell division, potentially limiting life span. Bats are the longest-lived mammals for their size, but it is unknown whether their telomeres shorten. Using >60 years of cumulative mark-recapture field data, we show that telomeres shorten with age in Rhinolophus ferrumequinum and Miniopterus schreibersii , but not in the bat genus with greatest longevity, Myotis ...
February 2018: Science Advances
https://www.readbyqxmd.com/read/29440390/high-dietary-fat-and-sucrose-results-in-an-extensive-and-time-dependent-deterioration-in-health-of-multiple-physiological-systems-in-mice
#18
James G Burchfield, Melkam A Kebede, Christopher C Meoli, Jacqueline Stöckli, P Tess Whitworth, Amanda L Wright, Nolan J Hoffman, Annabel Y Minard, Xiuquan Ma, James R Krycer, Marin E Nelson, Shi-Xiong Tan, Belinda Yau, Kristen C Thomas, Natalie K Y Wee, Ee-Cheng Khor, Ronaldo F Enriquez, Bryce Vissel, Trevor J Biden, Paul A Baldock, Kyle L Hoehn, James Cantley, Gregory J Cooney, David E James, Daniel J Fazakerley
Obesity is associated with metabolic dysfunction, including insulin resistance and hyperinsulinemia, and with disorders such as cardiovascular disease, osteoporosis, and neurodegeneration. Typically, these pathologies are examined in discrete model systems and with limited temporal resolution, and whether these disorders co-occur is therefore unclear. To address this question, we examined multiple physiological systems in male C57BL/6J mice following prolonged exposure to a high-fat/high-sucrose diet (HFHSD)...
February 13, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29440232/noncoding-rnas-long-non-coding-rnas-and-micrornas-in-endocrine-related-cancers
#19
Carolyn M Klinge
The human genome is 'pervasively transcribed' leading to a complex array of non-coding RNAs (ncRNAs) that far outnumber coding mRNAs. ncRNAs have regulatory roles in transcription and post-transcriptional processes as well numerous cellular functions that remain to be fully described. Best characterized of the 'expanding universe' of ncRNAs are the ~ 22 nucleotide microRNAs (miRNAs) that base-pair to target mRNA's 3' untranslated region within the RNA-induced silencing complex (RISC) and block translation and may stimulate mRNA transcript degradation...
February 12, 2018: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29439273/effects-of-diet-on-telomere-length-systematic-review-and-meta-analysis
#20
Lisiane Marçal Pérez, Marina Azambuja Amaral, Eduardo Mundstock, Florencia M Barbé-Tuana, Fátima Teresinha Costa Rodrigues Guma, Marcus H Jones, Denise Cantarelli Machado, Edgar E Sarria, Maximiniano Marques E Marques, Luiza Tweedie Preto, Matias Epifanio, João Guilherme Meinem Garbin, Rita Mattiello
BACKGROUND: The goal of this systematic review and meta-analysis is to determine the effect of diet on telomere length. METHODS: We searched the following databases: MEDLINE, Embase, LILACS, CINAHL, ISI Web of Science, and Scopus, as well as the Cochrane Central Register of Controlled Trials and the National Institutes of Health, from inception to December 2016. Articles that assessed effects of diet on telomere length were included. RESULTS: A total of 2,128 studies were identified, 30 were read in full, and 7 were systematically reviewed...
February 13, 2018: Public Health Genomics
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