Results 141 to 150 of about 161,718 (344)

Move beyond free radical theory of aging

open access: yesiMetaOmics, EarlyView.
Free radicals play a dual, dose‐dependent role in aging. Low levels activate the key sensor adenosine 5'‐monophosphate‐activated protein kinase (AMPK), promoting cell survival mechanisms like autophagy and enhancing mitochondrial health. High levels, however, push AMPK to initiate cell death pathways, such as apoptosis. This positions AMPK as a central
Xiaofeng Dai, Meilan Hu, Ruohan Lyu
wiley   +1 more source

Epigenetic inflammatory memory and periodontal disease: Mechanisms and clinical significance for comorbidities

open access: yesJournal of Periodontology, EarlyView.
Abstract Historically, immunological memory was considered an exclusive feature of adaptive immunity. However, innate immune cells have recently been shown to record and maintain epigenetically imprinted memory of earlier infectious or inflammatory challenges.
George Hajishengallis
wiley   +1 more source

Immunohistochemical Detection of Telomerase (hTERT) Protein in Human Cancer Tissues and a Subset of Cells in Normal Tissues

open access: yesNeoplasia: An International Journal for Oncology Research, 2001
We examined human telomerase reverse transcriptase (hTERT) protein distribution by immunohistochemistry in cultured cells and tissue sections. Cells with telomerase activity had nuclear positive signals whereas cells without telomerase activity did not ...
Eiso Hiyama   +3 more
doaj   +1 more source

Regulation of the Human Telomerase Gene TERT by Telomere Position Effect—Over Long Distances (TPE-OLD): Implications for Aging and Cancer

open access: yesPLoS Biology, 2016
Telomerase is expressed in early human development and then becomes silenced in most normal tissues. Because ~90% of primary human tumors express telomerase and generally maintain very short telomeres, telomerase is carefully regulated, particularly in ...
Wanil Kim   +9 more
semanticscholar   +1 more source

Molecular Diagnostics in Thyroid Nodules: Current Applications, Clinical Value, and Future Perspective

open access: yesMed Research, EarlyView.
ABSTRACT Molecular diagnostics have become an important adjunct to ultrasonography and fine‐needle aspiration (FNA) for thyroid nodules, especially in Bethesda III/IV cytology where malignancy risk is uncertain. This narrative review summarizes the diagnostic and prognostic value of key genomic drivers (BRAF V600E, RAS, RET, TERT, and selected fusions)
Guohui Xiao   +14 more
wiley   +1 more source

PARP1 controls KLF4-mediated telomerase expression in stem cells and cancer cells [PDF]

open access: gold, 2017
Meng-Hsun Hsieh   +10 more
openalex   +1 more source

Oxidative guanine base damage regulates human telomerase activity

open access: yesNature Structural &Molecular Biology, 2016
Changes in telomere length are associated with degenerative diseases and cancer. Oxidative stress and DNA damage have been linked to both positive and negative alterations in telomere length and integrity. Here we examined how the common oxidative lesion
Elise Fouquerel   +9 more
semanticscholar   +1 more source

Bridging Psychological Stress and Skin Cellular Aging: Flavonoids as a Dual‐Action Therapeutic Strategy

open access: yesPhytotherapy Research, EarlyView.
ABSTRACT Psychological stress (or simply “stress”) is a major contributor to chronic disease worldwide, affecting 35% of the global population, including younger generations. Furthermore, it plays a significant role in human premature aging; hence, its detrimental effects on people's health compel us to comprehend and control the ways in which ...
Marco Duarte   +3 more
wiley   +1 more source

Therapeutic inhibition of TRF1 impairs the growth of p53‐deficient K‐RasG12V‐induced lung cancer by induction of telomeric DNA damage

open access: yesEMBO Molecular Medicine, 2015
Telomeres are considered anti‐cancer targets, as telomere maintenance above a minimum length is necessary for cancer growth. Telomerase abrogation in cancer‐prone mouse models, however, only decreased tumor growth after several mouse generations when ...
María García‐Beccaria   +12 more
doaj   +1 more source

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