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https://www.readbyqxmd.com/read/27909242/beneficial-effects-of-rapamycin-in-a-drosophila-model-for-hereditary-spastic-paraplegia
#1
Shiyu Xu, Michael Stern, James A McNew
The locomotor deficits in the hereditary spastic paraplegias (HSPs) reflect degeneration of upper motor neurons, but the mechanisms underlying this neurodegeneration are unknown. We established a Drosophila model for the HSP atlastin (atl), which encodes an ER fusion protein. Here we show that neuronal atl loss causes degeneration of specific thoracic muscles that is preceded by other pathologies including accumulation of aggregates containing poly-ubiquitin (poly-UB), increased generation of reactive oxygen species, and activation of the JNK/Foxo stress response pathway...
December 1, 2016: Journal of Cell Science
https://www.readbyqxmd.com/read/27906968/structural-and-functional-recovery-of-sensory-cilia-in-c-elegans-ift-mutants-upon-aging
#2
Astrid Cornils, Ashish K Maurya, Lauren Tereshko, Julie Kennedy, Andrea G Brear, Veena Prahlad, Oliver E Blacque, Piali Sengupta
The majority of cilia are formed and maintained by the highly conserved process of intraflagellar transport (IFT). Mutations in IFT genes lead to ciliary structural defects and systemic disorders termed ciliopathies. Here we show that the severely truncated sensory cilia of hypomorphic IFT mutants in C. elegans transiently elongate during a discrete period of adult aging leading to markedly improved sensory behaviors. Age-dependent restoration of cilia morphology occurs in structurally diverse cilia types and requires IFT...
December 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27905558/microrna-mir-34-provides-robustness-to-environmental-stress-response-via-the-daf-16-network-in-c-elegans
#3
Meltem Isik, T Keith Blackwell, Eugene Berezikov
Diverse stresses and aging alter expression levels of microRNAs, suggesting a role for these posttranscriptional regulators of gene expression in stress modulation and longevity. Earlier studies demonstrated a central role for the miR-34 family in promoting cell cycle arrest and cell death following stress in human cells. However, the biological significance of this response was unclear. Here we show that in C. elegans mir-34 upregulation is necessary for developmental arrest, correct morphogenesis, and adaptation to a lower metabolic state to protect animals against stress-related damage...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27896020/identification-of-phenolic-secondary-metabolites-from-schotia-brachypetala-sond-fabaceae-and-demonstration-of-their-antioxidant-activities-in-caenorhabditis-elegans
#4
Mansour Sobeh, Esraa ElHawary, Herbenya Peixoto, Rola M Labib, Heba Handoussa, Noha Swilam, Ahmed H El-Khatib, Farukh Sharapov, Tamer Mohamed, Sonja Krstin, Michael W Linscheid, Abdel Nasser Singab, Michael Wink, Nahla Ayoub
BACKGROUND: Schotia brachypetala Sond. (Fabaceae) is an endemic tree of Southern Africa whose phytochemistry and pharmacology were slightly studied. The present work aimed at profiling the major phenolics compounds present in the hydro-alcohol extract from S. brachypetala leaves (SBE) using LC/HRESI/MS/MS and NMR and prove their antioxidant capabilities using novel methods. METHODS: In vitro assays; DPPH, TEAC persulfate decolorizing kinetic and FRAP assays, and in vivo assays: Caenorhabditis elegans strains maintenance, Intracellular ROS in C...
2016: PeerJ
https://www.readbyqxmd.com/read/27895695/the-effects-of-guizhi-fuling-capsule-drug-serum-on-uterine-leiomyoma-cells-and-its-mechanism
#5
Qi Shen, Weijing Ye, Xiaoli Hu, Chuchu Zhao, Lulu Zhou, Xueqiong Zhu
Aims. To observe the effects of Guizhi Fuling Capsule (GZFLC) drug serum on uterine leiomyoma cells and explore its mechanism. Main Methods. Sixty Sprague Dawley rats were randomly divided into two groups (normal saline lavage group and GZFLC lavage group), then, respectively, blank serum and GZFLC drug serum were collected, and finally human uterine leiomyoma cells were treated. Human leiomyoma tissues were collected from 20 patients who underwent uterine leiomyomas operations, and leiomyoma cells were primary cultured...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27890702/foxos-in-the-impaired-heart-new-therapeutic-targets-for-cardiac-diseases
#6
REVIEW
Zhenlong Xin, Zhiqiang Ma, Shuai Jiang, Dongjin Wang, Chongxi Fan, Shouyin Di, Wei Hu, Tian Li, Junjun She, Yang Yang
Cardiac diseases have a high morbidity and mortality and affect the global population. Based on recent accumulating evidence, Forkhead box O (FOXOs) play important roles in cardiac diseases. Therefore, a summary of the current literature on the molecular mechanisms and roles of FOXOs in the heart will provide valuable information. In this review, we first briefly introduce the molecular features of FOXOs. Then, we discuss the regulation and cardiac actions of the FOXO pathways. Based on this background, we expand our discussion to the roles of FOXOs in several major cardiac diseases, such as ischemic cardiac diseases, diabetic cardiomyopathy and myocardial hypertrophy...
November 24, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27888107/sodium-butyrate-attenuates-soybean-oil-based-lipid-emulsion-induced-increase-in-intestinal-permeability-of-lipopolysaccharide-by-modulation-of-p-glycoprotein-in-vitro
#7
Jun-Kai Yan, Zi-Zhen Gong, Tian Zhang, Wei Cai
Down-regulation of intestinal P-glycoprotein (P-gp) by soybean oil-based lipid emulsion (SOLE) may cause elevated intestinal permeability of lipopolysaccharide (LPS) in patients with total parenteral nutrition, but the appropriate preventative treatment is currently limited. Recently, sodium butyrate (NaBut) has been demonstrated to regulate the expression of P-gp. Therefore, this study aimed to address whether treatment with NaBut could attenuate SOLE-induced increase in intestinal permeability of LPS by modulation of P-gp in vitro...
November 22, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27882602/the-resveratrol-derivatives-trans-3-5-dimethoxy-4-fluoro-4-hydroxystilbene-and-trans-2-4-5-trihydroxystilbene-decrease-oxidative-stress-and-prolong-lifespan-in-caenorhabditis-elegans
#8
Nadine Fischer, Christian Büchter, Karoline Koch, Sabrina Albert, René Csuk, Wim Wätjen
OBJECTIVES: Resveratrol (trans-3,4',5-trihydroxystilbene (1)) was previously shown to extend the lifespan of different model organisms. However, its pharmacological efficiency is controversially discussed. Therefore, the bioactivity of four newly synthesized stilbenes (trans-3,5-dimethoxy-4-fluoro-4'-hydroxystilbene (3), trans-4'-hydroxy-3,4,5-trifluorostilbene (4), trans-2,5-dimethoxy-4'-hydroxystilbene (5), trans-2,4',5-trihydroxystilbene (6)) was compared to (1) and pterostilbene (trans-3,5-dimethoxy-4'-hydroxystilbene (2)) in the established model organism Caenorhabditis elegans...
November 23, 2016: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/27881235/elucidating-the-role-of-the-foxo3a-transcription-factor-in-the-igf-1-induced-migration-and-invasion-of-uveal-melanoma-cancer-cells
#9
Fengxia Yan, Rifang Liao, Mohd Farhan, Tinghuai Wang, Jiashu Chen, Zhong Wang, Peter J Little, Wenhua Zheng
Uveal melanoma (UM) is the most common primary intraocular malignant tumor of adults. It has high mortality rate due to liver metastasis. However, the epidemiology and pathogenesis of liver metastasis in UM are not elucidated and there is no effective therapy available for preventing the development of this disease. IGF-1 is a growth factor involved in cell proliferation, malignant transformation and inhibition of apoptosis. In previous report, IGF-1 receptor was found to be highly expressed in UM and this was related to tumor prognosis...
November 20, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27880903/mirnas-are-essential-for-the-regulation-of-the-pi3k-akt-foxo-pathway-and-receptor-editing-during-b%C3%A2-cell-maturation
#10
Maryaline Coffre, David Benhamou, David Rieß, Lili Blumenberg, Valentina Snetkova, Marcus J Hines, Tirtha Chakraborty, Sofia Bajwa, Kari Jensen, Mark M W Chong, Lelise Getu, Gregg J Silverman, Robert Blelloch, Dan R Littman, Dinis Calado, Doron Melamed, Jane A Skok, Klaus Rajewsky, Sergei B Koralov
B cell development is a tightly regulated process dependent on sequential rearrangements of immunoglobulin loci that encode the antigen receptor. To elucidate the role of microRNAs (miRNAs) in the orchestration of B cell development, we ablated all miRNAs at the earliest stage of B cell development by conditionally targeting the enzymes critical for RNAi in early B cell precursors. Absence of any one of these enzymes led to a block at the pro- to pre-B cell transition due to increased apoptosis and a failure of pre-B cells to proliferate...
November 22, 2016: Cell Reports
https://www.readbyqxmd.com/read/27875990/inverse-relationship-between-alzheimer-s-disease-and-cancer-and-other-factors-contributing-to-alzheimer-s-disease-a-systematic-review
#11
Ovais Shafi
BACKGROUND: The AD etiology is yet not properly known. Interactions among environmental factors, multiple susceptibility genes and aging, contribute to AD. This study investigates the factors that play role in causing AD and how changes in cellular pathways contribute to AD. METHODS: PUBMED database, MEDLINE database and Google Scholar were searched with no date restrictions for published articles involving cellular pathways with roles in cancers, cell survival, growth, proliferation, development, aging, and also contributing to Alzheimer's disease...
November 22, 2016: BMC Neurology
https://www.readbyqxmd.com/read/27854075/benzimidazole-derivative-m084-extends-the-lifespan-of-caenorhabditis-elegans-in-a-daf-16-foxo-dependent-way
#12
Ai-Jun Ding, Gui-Sheng Wu, Bin Tang, Xuechuan Hong, Michael X Zhu, Huai-Rong Luo
With the growth of aging population, there is increasing demand to develop strategy to improve the aging process and aging-related diseases. Benzimidazole and its derivatives are crucial heterocyclic backbone of many drugs and compounds with diverse therapeutic applications, including alleviation of aging-related diseases. Here, we investigate if the benzimidazole derivative n-butyl-[1H]-benzimidazol-2-amine (M084), a novel inhibitor of TRPC4 and TRPC5 channels and antidepressant, could affect the lifespan of Caenorhabditis elegans (C...
November 16, 2016: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/27815423/zebrafish-foxo3b-negatively-regulates-antiviral-response-through-suppressing-the-transactivity-of-irf3-and-irf7
#13
Xing Liu, Xiaolian Cai, Dawei Zhang, Chenxi Xu, Wuhan Xiao
Forkhead box O (FOXO)3, a member of the FOXO family of transcription factors, plays key roles in various cellular processes, including development, longevity, reproduction, and metabolism. Recently, FOXO3 has also been shown to be involved in modulating the immune response. However, how FOXO3 regulates immunity and the underlying mechanisms are still largely unknown. In this study, we show that zebrafish (Danio rerio) foxo3b, an ortholog of mammalian FOXO3, is induced by polyinosinic-polycytidylic acid stimulation and spring viremia of carp virus (SVCV) infection...
December 15, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27804049/fibroblast-growth-factor-8-inhibits-oxidative-stress-induced-apoptosis-in-h9c2-cells
#14
Reetu D Singla, Jing Wang, Dinender K Singla
Fibroblast growth factors (FGFs) comprise a large family of signaling molecules that involve cell patterning, mobilization, differentiation, and proliferation. Various FGFs, including FGF-1, FGF-2, and FGF-5, have been shown to play a role in cytoprotection during adverse cardiac events; however, whether FGF-8 is a cytoprotective remains unclear. The current study was designed to evaluate the effect of FGF-8 treatment on oxidative stress-induced apoptosis in H9c2 cells. Cells were divided into three groups: control, H2O2 (400 µm H2O2), and H2O2 + FGF-8 (4 ng/ml FGF-8)...
November 1, 2016: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/27803511/survivin-as-a-novel-biomarker-in-the-pathogenesis-of-acne-vulgaris-and-its-correlation-to-insulin-like-growth-factor-i
#15
Hanan A Assaf, Wafaa M Abdel-Maged, Bakheet E M Elsadek, Mohammed H Hassan, Mohamed A Adly, Soher A Ali
Survivin, a member of the inhibitor of apoptosis protein family, has an important role in cell cycle regulation. Insulin-like growth factor-I (IGF-I) is a polypeptide hormone with wide range of biologic effects including stimulation of lipogenesis in sebaceous glands. Their overexpression in some fibrotic disorders suggests a possible implication of both IGF-I and survivin in the pathogenesis of acne and/or acne scars. The current study aimed to assess and correlate serum levels of IGF-I and survivin in patients with active acne vulgaris and postinflammatory acne scars and to evaluate their lesional expressions in comparison to healthy controls...
2016: Disease Markers
https://www.readbyqxmd.com/read/27793012/foxo1-a-novel-insight-into-its-molecular-mechanisms-in-the-regulation-of-skeletal-muscle-differentiation-and-fiber-type-specification
#16
REVIEW
Meng Xu, Xiaoling Chen, Daiwen Chen, Bing Yu, Zhiqing Huang
FoxO1, a member of the forkhead transcription factor forkhead box protein O (FoxO) family, is predominantly expressed in most muscle types. FoxO1 is a key regulator of muscle growth, metabolism, cell proliferation and differentiation. In the past two decades, many researches have indicated that FoxO1 is a negative regulator of skeletal muscle differentiation while contrasting opinions consider that FoxO1 is crucial for myoblast fusion. FoxO1 is expressed much higher in fast twitch fiber enriched muscles than in slow muscles and is also closely related to muscle fiber type specification...
October 25, 2016: Oncotarget
https://www.readbyqxmd.com/read/27783623/maternal-diet-and-insulin-like-signaling-control-intergenerational-plasticity-of-progeny-size-and-starvation-resistance
#17
Jonathan D Hibshman, Anthony Hung, L Ryan Baugh
Maternal effects of environmental conditions produce intergenerational phenotypic plasticity. Adaptive value of these effects depends on appropriate anticipation of environmental conditions in the next generation, and mismatch between conditions may contribute to disease. However, regulation of intergenerational plasticity is poorly understood. Dietary restriction (DR) delays aging but maternal effects have not been investigated. We demonstrate maternal effects of DR in the roundworm C. elegans. Worms cultured in DR produce fewer but larger progeny...
October 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27779666/effects-of-the-igf-1-pten-akt-foxo-signaling-pathway-on-male-reproduction-in-rats-subjected-to-water-immersion-and-restraint-stress
#18
Pan Huang, Zhengrong Zhou, Fangxiong Shi, Genbao Shao, Ran Wang, Jintian Wang, Kangxin Wang, Wei Ding
The aim of the present study was to determine the effects of the insulin-like growth factor 1 (IGF-1)/phosphatase and tensin homologue deleted on chromosome 10 (PTEN)/Akt/forkhead box (FoxO) signaling pathway on male reproduction in rats subjected to water immersion and restraint stress (WRS). Sperm morphology, sperm malformation rate, and serum testosterone concentration were analyzed following WRS. In addition, the expression levels and immunolocalization of IGF‑1, PTEN, Akt and FoxO proteins, as well as the rate of cell apoptosis in rat testes, were investigated...
October 24, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27779663/post-translational-modifications-of-foxo-family-proteins-review
#19
Ziyao Wang, Tinghe Yu, Ping Huang
The Forkhead box O (FOXO) protein family is predominantly involved in apoptosis, oxidative stress, DNA damage/repair, tumor angiogenesis, glycometabolism, regulating life span and other important biological processes. Its activity is affected by a variety of posttranslational modifications (PTMs), including phosphorylation, acetylation, ubiquitination, methylation and glycosylation. When cells are subjected to different environments, the corresponding PTMs act on the FOXO protein family, to change transcriptional activity or subcellular localization, and the expression of downstream target genes, will ultimately affect the biological behavior of the cells...
October 20, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27777301/forkhead-transcription-factor-3a-foxo3a-modulates-hypoxia-signaling-via-up-regulation-of-the-von-hippel-lindau-gene-vhl
#20
Xing Liu, Xiaolian Cai, Bo Hu, Zhichao Mei, Dawei Zhang, Gang Ouyang, Jing Wang, Wei Zhang, Wuhan Xiao
FOXO3a, a member of the forkhead homeobox type O (FOXO) family of transcriptional factors, regulates cell survival in response to DNA damage, caloric restriction, and oxidative stress. The von Hippel-Lindau (VHL) tumor suppressor gene encodes a component of the E3 ubiquitin ligase complex that mediates hypoxia-inducible factor α degradation under aerobic conditions, thus acting as one of the key regulators of hypoxia signaling. However, whether FOXO3a impacts cellular hypoxia stress remains unknown. Here we show that FOXO3a directly binds to the VHL promoter and up-regulates VHL expression...
December 2, 2016: Journal of Biological Chemistry
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