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https://www.readbyqxmd.com/read/28638275/the-application-of-dehydroepiandrosterone-on-improving-mitochondrial-function-and-reducing-apoptosis-of-cumulus-cells-in-poor-ovarian-responders
#1
Li-Te Lin, Peng-Hui Wang, Zhi-Hong Wen, Chia-Jung Li, San-Nung Chen, Eing-Mei Tsai, Jiin-Tsuey Cheng, Kuan-Hao Tsui
Poor ovarian responders (PORs) pose a great challenge for in vitro fertilization (IVF). Previous studies have suggested that dehydroepiandrosterone (DHEA) may improve IVF outcomes in PORs. The current study attempted to investigate the clinical benefits of DHEA in PORs and the possible mechanisms of DHEA on cumulus cells (CCs). This was a prospective study performed at one tertiary center from January 2015 to March 2016. A total of 131 women who underwent IVF treatment participated, including 59 normal ovarian responders (NORs) and 72 PORs...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28637530/characterization-of-the-complete-mitochondrial-genome-of-ortleppascaris-sinensis-nematoda-heterocheilidae-and-comparative-mitogenomic-analysis-of-eighteen-ascaridida-nematodes
#2
J H Zhao, G J Tu, X B Wu, C P Li
Ortleppascaris sinensis (Nematoda: Ascaridida) is a dominant intestinal nematode of the captive Chinese alligator. However, the epidemiology, molecular ecology and population genetics of this parasite remain largely unexplored. In this study, the complete mitochondrial (mt) genome sequence of O. sinensis was first determined using a polymerase chain reaction (PCR)-based primer-walking strategy, and this is also the first sequencing of the complete mitochondrial genome of a member of the genus Ortleppascaris...
June 22, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28630339/ucp1-deficiency-causes-brown-fat-respiratory-chain-depletion-and-sensitizes-mitochondria-to-calcium-overload-induced-dysfunction
#3
Lawrence Kazak, Edward T Chouchani, Irina G Stavrovskaya, Gina Z Lu, Mark P Jedrychowski, Daniel F Egan, Manju Kumari, Xingxing Kong, Brian K Erickson, John Szpyt, Evan D Rosen, Michael P Murphy, Bruce S Kristal, Steven P Gygi, Bruce M Spiegelman
Brown adipose tissue (BAT) mitochondria exhibit high oxidative capacity and abundant expression of both electron transport chain components and uncoupling protein 1 (UCP1). UCP1 dissipates the mitochondrial proton motive force (Δp) generated by the respiratory chain and increases thermogenesis. Here we find that in mice genetically lacking UCP1, cold-induced activation of metabolism triggers innate immune signaling and markers of cell death in BAT. Moreover, global proteomic analysis reveals that this cascade induced by UCP1 deletion is associated with a dramatic reduction in electron transport chain abundance...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28629784/-from-paediatric-urological-care-to-adult-urology-assessment-of-a-transition-consultation-for-adolescents
#4
L Even, S Mouttalib, J Moscovici, M Soulie, P Rischmann, X Game, P Galinier, O Bouali
To provide an adequate lifelong urological care in the complex period of adolescence, a transition consultation conducted by a paediatric surgeon and an urologist was developed in our institution. As a real rite of passage, it allows the follow-up and the adapted care of urological conditions, sometimes complex, and permits the transition between childhood and the world of grown-ups. We reported our experience at the Children Hospital of our institution (paediatric surgery and urology departments). During a 6 months period (January-July 2015), forty-five young adults with a mean age of 17...
June 16, 2017: Progrès en Urologie
https://www.readbyqxmd.com/read/28628643/mis-targeting-of-the-mitochondrial-protein-lipt2-leads-to-apoptotic-cell-death
#5
Emanuele Bernardinelli, Roberta Costa, Giada Scantamburlo, Janet To, Rossana Morabito, Charity Nofziger, Carolina Doerrier, Gerhard Krumschnabel, Markus Paulmichl, Silvia Dossena
Lipoyl(Octanoyl) Transferase 2 (LIPT2) is a protein involved in the post-translational modification of key energy metabolism enzymes in humans. Defects of lipoic acid synthesis and transfer start to emerge as causes of fatal or severe early-onset disease. We show that the first 31 amino acids of the N-terminus of LIPT2 represent a mitochondrial targeting sequence and inhibition of the transit of LIPT2 to the mitochondrion results in apoptotic cell death associated with activation of the apoptotic volume decrease (AVD) current in normotonic conditions, as well as over-activation of the swelling-activated chloride current (IClswell), mitochondrial membrane potential collapse, caspase-3 cleavage and nuclear DNA fragmentation...
2017: PloS One
https://www.readbyqxmd.com/read/28625916/er-stress-disturbs-sr-er-mitochondria-ca-2-transfer-implications-in-duchenne-muscular-dystrophy
#6
Marion Pauly, Claire Angebault-Prouteau, Haikel Dridi, Cécile Notarnicola, Valérie Scheuermann, Alain Lacampagne, Stefan Matecki, Jérémy Fauconnier
Besides its role in calcium (Ca(2+)) homeostasis, the sarco-endoplamic reticulum (SR/ER) controls protein folding and is tethered to mitochondria.Under pathophysiological conditions the unfolded protein response (UPR) is associated with disturbance in SR/ER-mitochondria crosstalk. Here, we investigated whether ER stress altered SR/ER-mitochondria links, Ca(2+) handling and muscle damage in WT (Wild Type) and mdx mice, the murine model of Duchenne Muscular Dystrophy (DMD). In WT mice, the SR/ER-mitochondria links were decreased in isolated FDB muscle fibers after injection of ER stress activator tunicamycin (TM)...
June 15, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28622362/the-complete-mitochondrial-genome-of-sesarmops-sinensis-reveals-gene-rearrangements-and-phylogenetic-relationships-in-brachyura
#7
Bo-Ping Tang, Zhao-Zhe Xin, Yu Liu, Dai-Zhen Zhang, Zheng-Fei Wang, Hua-Bin Zhang, Xin-Yue Chai, Chun-Lin Zhou, Qiu-Ning Liu
Mitochondrial genome (mitogenome) is very important to understand molecular evolution and phylogenetics. Herein, in this study, the complete mitogenome of Sesarmops sinensis was reported. The mitogenome was 15,905 bp in size, and contained 13 protein-coding genes (PCGs), two ribosomal RNA (rRNA) genes, 22 transfer RNA (tRNA) genes, and a control region (CR). The AT skew and the GC skew are both negative in the mitogenomes of S. sinensis. The nucleotide composition of the S. sinensis mitogenome was also biased toward A + T nucleotides (75...
2017: PloS One
https://www.readbyqxmd.com/read/28615444/the-human-mitochondrial-single-strand-dna-binding-protein-displays-distinct-kinetics-and-thermodynamics-of-dna-binding-and-exchange
#8
Yufeng Qian, Kenneth A Johnson
The human mitochondrial SSB (mtSSB) is a homo-tetrameric protein, involved in mtDNA replication and maintenance. Although mtSSB is structurally similar to SSB from Escherichia coli (EcoSSB), it lacks the C-terminal disordered domain but little is known about the biophysics of mtSSB-ssDNA interactions. Here, we characterized the kinetics and thermodynamics of mtSSB binding to ssDNA by equilibrium titrations and stopped-flow kinetic measurements. We show that the mtSSB tetramer can bind to ssDNA in two distinct binding modes: (SSB)30 and (SSB)60, defined by DNA binding site sizes of 30 and 60 nt, respectively...
June 14, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28612295/neuroprotective-effect-of-creatine-and-pyruvate-on-enzyme-activities-of-phosphoryl-transfer-network-and-oxidative-stress-alterations-caused-by-leucine-administration-in-wistar-rats
#9
Elenara Rieger, Itiane Diehl de Franceschi, Thales Preissler, Clovis Milton Duval Wannmacher
Maple syrup urine disease is an autosomal metabolic disease caused by a deficiency of branched-chain α-keto acid dehydrogenase complex activity. In this disease occur the accumulation of the branched-chain amino acids leucine, isoleucine, and valine and their corresponding branched-chain α-keto acids in the tissues and body fluids. The affected patients may present psychomotor development delay and mental retardation. The pathophysiology of maple syrup urine disease is not entirely understood, but leucine seems to be the primary neurotoxic metabolite...
June 13, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28610385/complete-mitochondrial-genome-and-taxonomic-revision-of-cardiodactylus-muiri-otte-2007-gryllidae-eneopterinae-lebinthini
#10
Jiajia Dong, Natallia Vicente, Ioana C Chintauan-Marquier, Cahyo Ramadi, Agnès Dettai, Tony Robillard
In the present study, we report the high-coverage complete mitochondrial genome (mitogenome) of the cricket Cardiodactylus muiri Otte, 2007. The mitogenome was sequenced using a long-PCR approach on an Ion Torrent Personal Genome Machine (PGM) for next generation sequencing technology. The total length of the amplified mitogenome is 16,328 bp, representing 13 protein-coding genes, 22 transfer RNA genes, two ribosomal RNA genes and one noncoding region (D-loop region). The new sets of long-PCR primers reported here are invaluable resources for future comparative evolutionary genomic studies in Orthopteran insects...
May 15, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609941/mitochondrial-genome-of-i-abraxas-i-i-suspecta-i-lepidoptera-geometridae-%C3%A2-and-comparative-analysis-with-other-lepidopterans
#11
Y U Sun, Jiawei Zhang, Qingqing Li, Dan Liang, Muhammad Nadeem Abbas, Cen Qian, Lei Wang, Guoqing Wei, Bao-Jian Zhu, Chao-Liang Liu
In this study, a complete mitochondrial genome (mitogenome) sequence of Abraxas suspecta (Lepidoptera: Geometridae) is isolated and characterized. The complete DNA is 15,547 bp length and contains 2 ribosomal RNA genes, 23 putative transfer RNA (tRNA) genes including an extra tRNAAsn (AUU), 13 protein-coding genes and an adenine (A) + thymine (T)-rich region. The nucleotide composition and gene organization are identical to those of other lepidopteran, except for the presence of an extra copy of trnN (AUU)...
April 20, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609925/-i-epirrita-i-i-pulchraria-i-taylor-1907-transferred-to-i-malacodea-i-with-notes-on-the-phylogeny-and-ecology-of-the-tribe-operophterini-lepidoptera-geometridae-larentiinae
#12
Andro Truuverk, Erki Õunap, Toomas Tammaru
The Nearctic Epirrita pulchraria (Taylor, 1907) was revealed as a sister taxon of the Palaearctic Malacodea regelaria Tengström,1869 in a molecular phylogenetic analysis of the tribe Operophterini. DNA sequence variation in one mitochondrial (COI) and eight nuclear (28S, EF-1α, WGL, GAPDH, RPS5, IDH, MDH, CAD) gene fragments was used in the analysis. Bayesian inference resulted in a well-resolved phylogenetic hypothesis. According to the recovered phylogeny a new combination is proposed: Rachela pulchraria Taylor, 1907 is transferred from Epirrita Hübner, 1808 to Malacodea Tengström, 1869 as Malacodea pulchraria (Taylor, 1907) comb...
April 27, 2017: Zootaxa
https://www.readbyqxmd.com/read/28608777/tumor-metabolism-in-the-microenvironment-of-nodal-metastasis-in-oral-squamous-cell-carcinoma
#13
Joseph Curry, Patrick Tassone, Kurren Gill, Madalina Tuluc, Voichita BarAd, Mehri Mollaee, Diana Whitaker-Menezes, Ulrich Rodeck, Adam Luginbuhl, David Cognetti, William Keane, Ubaldo Martinez-Outschoorn
Objective In many cancers, including head and neck squamous cell carcinoma (HNSCC), different regions within a tumor have different metabolic phenotypes. Transfer of metabolites between compartments promotes tumor growth and aggressive behavior. Metabolic compartmentalization in HNSCC nodal metastases has not been studied, nor has its impact on extracapsular extension or clinical outcomes been determined. Study Design Retrospective analysis based on immunohistochemistry staining. Setting Tertiary care center...
June 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28607632/mitochondrial-transfer-from-wharton-s-jelly-mesenchymal-stem-cell-to-merrf-cybrid-reduces-oxidative-stress-and-improves-mitochondrial-bioenergetics
#14
Yao-Chung Chuang, Chia-Wei Liou, Shang-Der Chen, Pei-Wen Wang, Jiin-Haur Chuang, Mao-Meng Tiao, Te-Yao Hsu, Hung-Yu Lin, Tsu-Kung Lin
Myoclonus epilepsy associated with ragged-red fibers (MERRF) is a maternally inherited mitochondrial disease affecting neuromuscular functions. Mt.8344A>G mutation in mitochondrial DNA (mtDNA) is the most common cause of MERRF syndrome and has been linked to an increase in reactive oxygen species (ROS) level and oxidative stress, as well as impaired mitochondrial bioenergetics. Here, we tested whether WJMSC has therapeutic potential for the treatment of MERRF syndrome through the transfer of mitochondria...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28607393/resolving-phylogenetic-relationships-of-delphacini-and-tropidocephalini-hemiptera-delphacidae-delphacinae-as-inferred-from-four-genetic-loci
#15
Yi-Xin Huang, Li-Fang Zheng, Charles R Bartlett, Dao-Zheng Qin
This paper explores the phylogeny of the delphacid subfamily Delphacinae based on nuclear ribosomal and mitochondrial DNA sequences of four genetic loci (16S rDNA, 28S rDNA, Cytochrome oxidase I and Cytochrome b). Maximum likelihood and Bayesian analyses yield robust phylogenetic trees. The topologies support the monophyly of Delphacinae and its basal split into three tribes, and provisionally support subdividing Delphacini into three clades, including a more broadly defined Numatina. The tribe Tropidocephalini is divided into two clades...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28606444/comparative-mitochondrial-genomics-among-spirometra-cestoda-diphyllobothriidae-and-the-molecular-phylogeny-of-related-tapeworms
#16
Xi Zhang, Jiang Yang Duan, Ya Li Shi, Peng Jiang, De Jun Zeng, Zhong Quan Wang, Jing Cui
The larva of Spirometra erinaceieuropaei can parasitize humans, causing a serious parasitic zoonosis known as sparganosis. Although it is medically important, our knowledge about the phylogenetic position of S. erinaceieuropaei and its evolutionary history is fragmentary. In this study, complete mitochondrial (mt) genomes of 4 geographically distinct isolates of S. erinaceieuropaei spargana collected from 4 frog hosts (Hylarana guentheri, Rana nigromaculata, R. rugulosa, R. temporaria) were characterized using an Illumina sequencing platform...
June 9, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28603497/sigma-1-receptor-plays-a-negative-modulation-on-n-type-calcium-channel
#17
Kang Zhang, Zhe Zhao, Liting Lan, Xiaoli Wei, Liyun Wang, Xiaoyan Liu, Haitao Yan, Jianquan Zheng
The sigma-1 receptor is a 223 amino acids molecular chaperone with a single transmembrane domain. It is resident to eukaryotic mitochondrial-associated endoplasmic reticulum and plasma membranes. By chaperone-mediated interactions with ion channels, G-protein coupled receptors and cell-signaling molecules, the sigma-1 receptor performs broad physiological and pharmacological functions. Despite sigma-1 receptors have been confirmed to regulate various types of ion channels, the relationship between the sigma-1 receptor and N-type Ca(2+) channel is still unclear...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28598968/comparative-mitochondrial-genome-analysis-of-daphnis-nerii-and-other-lepidopteran-insects-reveals-conserved-mitochondrial-genome-organization-and-phylogenetic-relationships
#18
Yu Sun, Chen Chen, Jin Gao, Muhammad Nadeem Abbas, Saima Kausar, Cen Qian, Lei Wang, Guoqing Wei, Bao-Jian Zhu, Chao-Liang Liu
In the present study, the complete sequence of the mitochondrial genome (mitogenome) of Daphnis nerii (Lepidoptera: Sphingidae) is described. The mitogenome (15,247 bp) of D.nerii encodes13 protein-coding genes (PCGs), 22 transfer RNA genes (tRNAs), two ribosomal RNA genes (rRNAs) and an adenine (A) + thymine (T)-rich region. Its gene complement and order is similar to that of other sequenced lepidopterans. The 12 PCGs initiated by ATN codons except for cytochrome c oxidase subunit 1 (cox1) gene that is seemingly initiated by the CGA codon as documented in other insect mitogenomes...
2017: PloS One
https://www.readbyqxmd.com/read/28598851/mitochondrial-dysfunction-triggers-synaptic-deficits-via-activation-of-p38-map-kinase-signaling-in-differentiated-alzheimer-s-disease-trans-mitochondrial-cybrid-cells
#19
Qing Yu, Fang Du, Justin T Douglas, Haiyang Yu, Shirley ShiDu Yan, Shi Fang Yan
Loss of synapse and synaptic dysfunction contribute importantly to cognitive impairment in Alzheimer's disease (AD). Mitochondrial dysfunction and oxidative stress are early pathological features in AD-affected brain. However, the effect of AD mitochondria on synaptogenesis remains to be determined. Using human trans-mitochondrial "cybrid" (cytoplasmic hybrid) neuronal cells whose mitochondria were transferred from platelets of patients with sporadic AD or age-matched non-AD subjects with relatively normal cognition, we provide the first evidence of mitochondrial dysfunction compromises synaptic development and formation of synapse in AD cybrid cells in response to chemical-induced neuronal differentiation...
June 6, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28598224/mesenchymal-stromal-cells-modulate-macrophages-in-clinically-relevant-lung-injury-models-by-extracellular-vesicle-mitochondrial-transfer
#20
Thomas J Morrison, Megan V Jackson, Erin K Cunningham, Adrien Kissenpfennig, Daniel F McAuley, Cecilia M O'Kane, Anna D Krasnodembskaya
RATIONALE: Acute Respiratory Distress Syndrome (ARDS) remains a major cause of respiratory failure in critically ill patients. Mesenchymal Stromal Cells (MSCs) are a promising candidate for a cell based therapy. However, the mechanisms of MSCs effects in ARDS are not well understood. Here we focused on the paracrine effect of MSCs on macrophage polarization and the role of extracellular vesicle (EV)-mediated mitochondrial transfer. OBJECTIVES: To determine the effects of human MSCs on macrophage function in the ARDS environment and to elucidate the mechanisms of these effects...
June 9, 2017: American Journal of Respiratory and Critical Care Medicine
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