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Plasma mitochondrial dna

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https://www.readbyqxmd.com/read/29764711/does-lipid-peroxidation-and-oxidative-dna-damage-differ-in-cryopreserved-semen-samples-from-young-adult-and-aged-nellore-bulls
#1
Juliane Teramachi Trevizan, Janaina Torres Carreira, Isadora Resende Carvalho, Bruna Helena Kipper, Walter Bertequine Nagata, Silvia Helena Venturoli Perri, Maria Emilia Franco Oliveira, Julia Cestari Pierucci, Marion Burkhardt de Koivisto
The aims of this study were to evaluate cryopreserved semen of Nellore bulls of different ages and verify whether sperm quality declines with advancing age and whether lipid peroxidation and DNA damage are involved in this process. For this purpose, 40 Nellore bulls were divided into three age groups: Young, aged 1.8-2 years (n = 9); Adult, aged 3.5-7.0 years (n = 19); and Seniors, aged 8.0-14.3 years (n = 12). Three ejaculates were collected from each bull, cryopreserved and evaluated for various parameters including membrane integrity, mitochondrial potential (FITC-PSA and JC1), lipid peroxidation (C-11BODIPY 581 / 591) and oxidative DNA damage (8OHdG) using flow cytometry...
April 17, 2018: Animal Reproduction Science
https://www.readbyqxmd.com/read/29742927/tetracaine-induces-apoptosis-through-a-mitochondrion-dependent-pathway-in-human-corneal-stromal-cells-in-vitro
#2
Zhan Song, Ting-Jun Fan
PURPOSE: Tetracaine is a local anesthetic widely used in ocular diagnosis and ophthalmic surgery and may lead to some adverse effects and complications at a clinical dose. To assess the cytotoxicity and molecular toxicity mechanisms of tetracaine, we used human corneal stromal (HCS) cells as an in vitro model to study the effects of tetracaine on HCS cells. MATERIALS AND METHODS: The cytotoxicity of tetracaine on HCS cells was investigated by examining the changes of cell growth, morphology, viability and cell cycle progressing when HCS cells were treated with tetracaine at concentrations from 10 g/L to 0...
May 9, 2018: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/29739258/4-methylpyrazole-protects-against-acetaminophen-hepatotoxicity-in-mice-and-in-primary-human-hepatocytes
#3
J Y Akakpo, A Ramachandran, S E Kandel, H M Ni, S C Kumer, B H Rumack, H Jaeschke
Liver injury due to acetaminophen (APAP) overdose is the major cause of acute liver failure in the United States. While treatment with N-acetylcysteine is the current standard of care for APAP overdose, anecdotal evidence suggests that administration of 4-methylpyrazole (4MP) may be beneficial in the clinic. The objective of the current study was to examine the protective effect of 4MP and its mechanism of action. Male C57BL/6J mice were co-treated with 300 mg/kg of APAP and 50 mg/kg of 4MP. The severe liver injury induced by APAP at 6 h as indicated by elevated plasma alanine aminotransferase activities, centrilobular necrosis, and nuclear DNA fragmentation was almost completely eliminated by 4MP...
January 1, 2018: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/29736620/cardioprotective-effect-of-zingerone-against-oxidative-stress-inflammation-and-apoptosis-induced-by-cisplatin-or-gamma-radiation-in-rats
#4
Ahmed F Soliman, Lobna M Anees, Doaa M Ibrahim
Despite their clinical benefits in cancer treatment, the deleterious effects on heart following chemo/radiotherapy are of increasing importance. Zingerone, a natural polyphenol, possesses multiple biological activities, such as antioxidant and anti-inflammatory. Thus, the current study was designed to assess the potential cardioprotective effects of zingerone against cisplatin or γ-radiation. Zingerone was given by intragastric intubation (25 mg/kg) daily for three successive weeks prior to the induction of cardiotoxicity using a single dose of cisplatin (20 mg/kg, i...
May 7, 2018: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/29734881/effect-of-ubiquinol-supplementation-on-biochemical-and-oxidative-stress-indexes-after-intense-exercise-in-young-athletes
#5
Patrick Orlando, Sonia Silvestri, Roberta Galeazzi, Roberto Antonicelli, Fabio Marcheggiani, Ilenia Cirilli, Tiziana Bacchetti, Luca Tiano
OBJECTIVES: Physical exercise significantly impacts the biochemistry of the organism. Ubiquinone is a key component of the mitochondrial respiratory chain and ubiquinol, its reduced and active form, is an emerging molecule in sport nutrition. The aim of this study was to evaluate the effect of ubiquinol supplementation on biochemical and oxidative stress indexes after an intense bout of exercise. METHODS: 21 male young athletes (26 + 5 years of age) were randomized in two groups according to a double blind cross-over study, either supplemented with ubiquinol (200 mg/day) or placebo for 1 month...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29718255/mitochondrial-dna-is-a-pro-inflammatory-damage-associated-molecular-pattern-released-during-active-ibd
#6
Ray K Boyapati, David A Dorward, Arina Tamborska, Rahul Kalla, Nicholas T Ventham, Mary K Doherty, Philip D Whitfield, Mohini Gray, Joseph Loane, Adriano G Rossi, Jack Satsangi, Gwo-Tzer Ho
Background: Due to common evolutionary origins, mitochondrial DNA (mtDNA) shares many similarities with immunogenic bacterial DNA. MtDNA is recognized as a pro-inflammatory damage-associated molecular pattern (DAMP) with a pathogenic role in several inflammatory diseases. We hypothesised that mtDNA is released during active disease, serving as a key pro-inflammatory factor in inflammatory bowel disease (IBD). Methods: Between 2014 and 2015, we collected plasma separated within 2 hours of sampling from 97 prospectively recruited IBD patients (67 ulcerative colitis [UC] and 30 Crohn's disease [CD]) and 40 non-IBD controls...
May 1, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29682165/urinary-mitochondrial-dna-identifies-renal-dysfunction-and-mitochondrial-damage-in-sepsis-induced-acute-kidney-injury
#7
Qiongyuan Hu, Jianan Ren, Huajian Ren, Jie Wu, Xiuwen Wu, Song Liu, Gefei Wang, Guosheng Gu, Kun Guo, Jieshou Li
Background: Recent animal studies have shown that mitochondrial dysfunction initiates and accelerates renal injury in sepsis, but its role in sepsis remains unknown. Mitochondrial stress or dying cells can lead to fragmentation of the mitochondrial genome, which is considered a surrogate marker of mitochondrial dysfunction. Therefore, we evaluated the efficiency of urinary mitochondrial DNA (UmtDNA) as a marker of renal dysfunction during sepsis-induced acute kidney injury (AKI). Methods: We isolated DNA from plasma and urine of patients...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29679277/the-role-of-mitochondrial-dna-damage-at-skeletal-muscle-oxidative-stress-on-the-development-of-type-2-diabetes
#8
Julia Matzenbacher Dos Santos, Denise Silva de Oliveira, Marcos Lazaro Moreli, Sandra Aparecida Benite-Ribeiro
Reduced cellular response to insulin in skeletal muscle is one of the major components of the development of type 2 diabetes (T2D). Mitochondrial dysfunction involves in the accumulation of toxic reactive oxygen species (ROS) that leads to insulin resistance. The aim of this study was to verify the involvement of mitochondrial DNA damage at ROS generation in skeletal muscle during development of T2D. Wistar rats were fed a diet containing 60% fat over 8 weeks and at day 14 a single injection of STZ (25 mg/kg) was administered (T2D-induced)...
April 20, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29675023/increased-plasma-levels-of-danger-associated-molecular-patterns-are-associated-with-immune-suppression-and-postoperative-infections-in-patients-undergoing-cytoreductive-surgery-and-hyperthermic-intraperitoneal-chemotherapy
#9
Guus P Leijte, Hettie Custers, Jelle Gerretsen, Amon Heijne, Johannes Roth, Thomas Vogl, Gert J Scheffer, Peter Pickkers, Matthijs Kox
Introduction: Danger-associated molecular patterns (DAMPs) can elicit immune responses and may subsequently induce an immune-suppressed state. Previous work showed that increased plasma levels of DAMPs are associated with immune suppression and increased susceptibility toward infections in trauma patients. Like trauma, major surgical procedures, such as cytoreductive surgery (CRS) combined with hyperthermic intraperitoneal chemotherapy (HIPEC), are also thought to cause profound DAMP release...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29660630/anti-apoptotic-effects-of-minocycline-on-ram-epididymal-spermatozoa-exposed-to-oxidative-stress
#10
Zahra Merati, Abbas Farshad, Amjad Farzinpour, Jalal Rostamzadeh, Mohsen Sharafi
Cryopreservation causes major damage to sperm cells and thereby, increased apoptosis has been documented as physiologically programmed cells death. The goal of current study was to evaluate the anti-apoptotic effects of minocycline compared to sericin added to diluents on frozen-thawed spermatozoa. Epididymal spermatozoa isolated from 50 pairs testes with motility >80% and total morphological abnormalities <10% were pooled, divided into 9 aliquots and used for cryopreservation. The semen samples were re-suspended with basic Tris egg yolk diluent containing minocycline (5 and 10 mg) and tert-butyl hydro peroxide (10 and 20 μm) and sericin (0...
April 6, 2018: Theriogenology
https://www.readbyqxmd.com/read/29630031/elevated-cell-free-mitochondrial-dna-in-filtered-plasma-is-associated-with-hiv-infection-and-inflammation
#11
Omair Arshad, Izabella Gadawska, Beheroze Sattha, Hélène C F Côté, Anthony Y Y Hsieh
BACKGROUND: Increased cell-free DNA levels are associated with poor health outcomes, and cell-free mitochondrial DNA (cf-mtDNA) has proinflammatory properties. Given that HIV infection is associated with chronic inflammation, we investigated the relationship between cf-mtDNA and proinflammatory cytokine interleukin-6 (IL-6) in the context of HIV infection. We also optimized separation of cell-free plasma from blood. SETTING: In this retrospective cross-sectional study, we collected blood, demographic information, and clinical data from 99 HIV-infected and 103 HIV-uninfected adults and children enrolled in the Children and Women: AntiRetrovirals and Markers of Aging pan-Canadian (CARMA) cohort...
May 1, 2018: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29613949/reduced-dnase-enzyme-activity-in-response-to-high-post-injury-mitochondrial-dna-concentration-provides-a-therapeutic-target-for-sirs
#12
Daniel J McIlroy, Kyra Minahan, Simon Keely, Natalie Lott, Philip Hansbro, Doug W Smith, Zsolt J Balogh
BACKGROUND: Cell free mitochondrial DNA (mtDNA) is pro-inflammatory and has been detected in high concentrations in trauma patients' plasma. Deoxyribonuclease (DNase) is the free plasma enzyme responsible for the digestion of extracellular DNA. The relationship between mtDNA and DNase after major trauma is unknown. We hypothesized that DNase activity would be elevated after injury and trauma surgery, and would be associated with high concentrations of extracellular DNA. METHODS: 2-year prospective study was performed on 103 consecutive trauma patients (Male 81%, Age: 38 IQR 30-59 years; ISS: 18 IQR 12-26) who underwent standardised major orthopaedic trauma surgical interventions...
March 22, 2018: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29600584/plasma-glutathione-suggests-oxidative-stress-is-equally-present-in-early-and-late-onset-bipolar-disorder
#13
Nisha Singh, Hannah McMahon, Amy Bilderbeck, Zoe E Reed, Elizabeth Tunbridge, Daniel Brett, John R Geddes, Grant C Churchill, Guy M Goodwin
OBJECTIVES: We previously demonstrated oxidative stress in bipolar patients and a relationship between the age of illness onset and total glutathione, a principal antioxidant. In this study, we sought to replicate these findings in a new cohort of patients. METHODS: We recruited bipolar patients from Warneford Hospital, Oxford, UK, of similar age and grouped them according to age of onset of illness. The early-onset group comprised patients with onset at <23 years, and the late group comprised patients with onset at >30 years...
March 30, 2018: Bipolar Disorders
https://www.readbyqxmd.com/read/29582449/the-hogg1-ser326cys-polymorphism-and-male-subfertility-in-taiwanese-patients-with-varicocele
#14
S S-S Chen, L-P Chiu
To investigate the association between the human 8-oxoguanine DNA glycosylase 1 (hOGG1) gene Ser326Cys polymorphism and male subfertility in Taiwanese patients with varicocele, we made a prospective study. Ninety young male patients with varicocele (group 1), 50 young male patients with subclinical varicocele (group 2) and 30 normal young male patients without varicocele (group 3) were recruited in this study. The hOGG1 null homozygous genotype (Cys/Cys) and the occurrence of a 4,977-bp deletion in mitochondrial DNA and mitochondrial copy number in spermatozoa were determined by polymerase chain reaction...
March 26, 2018: Andrologia
https://www.readbyqxmd.com/read/29563589/higher-levels-of-free-plasma-mitochondrial-dna-are-associated-with-the-onset-of-chronic-gvhd
#15
Jacob Rozmus, Sabine Ivison, Amina Kariminia, Vivian M Leung, Susanna Sung, Peter Subrt, Stephanie J Lee, Eric Boilard, Irwin Walker, Ronan Foley, Jeff Lipton, Geneviève Gallagher, Stephen Couban, Kirk R Schultz
Toll-like receptor-9 (TLR9) responsive B cells have previously been associated with the onset of extensive chronic graft-versus-host disease (cGvHD). We hypothesized that the onset of cGvHD associated with a higher level of plasma-free mitochondrial DNA (mtDNA), a putative TLR9 agonist. Plasma cell-free mtDNA levels were measured in 39 adult patients post-HSCT with and without cGvHD. mtDNA was isolated from plasma and quantified by Q-PCR amplification. We correlated B cell responsiveness to CpG-DNA, a prototypical TLR9 agonist, and previously identified cGVHD biomarkers with mtDNA levels...
March 21, 2018: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/29453441/circulating-cell-free-mitochondrial-dna-but-not-leukocyte-mitochondrial-dna-copy-number-is-elevated-in-major-depressive-disorder
#16
Daniel Lindqvist, Owen M Wolkowitz, Martin Picard, Lars Ohlsson, Francesco S Bersani, Johan Fernström, Åsa Westrin, Christina M Hough, Jue Lin, Victor I Reus, Elissa S Epel, Synthia H Mellon
Major depressive disorder (MDD) has been linked to mitochondrial defects, which could manifest in mitochondrial DNA (mtDNA) polymorphisms or mutations. Additionally, copy number of mtDNA (mtDNA-cn) can be quantified in peripheral blood mononuclear cells (PBMC)s, indirectly reflecting cellular energetics, or in the circulating cell-free mtDNA (ccf-mtDNA) levels, which may reflect a fraction of the mitochondrial genome released during cellular stress. Few studies have examined ccf-mtDNA in MDD, and no studies have tested its relationship with intracellular mtDNA-cn or with antidepressant treatment response...
January 30, 2018: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29438900/sperm-quality-biomarkers-complement-reproductive-and-endocrine-parameters-in-investigating-environmental-contaminants-in-common-carp-cyprinus-carpio-from-the-lake-mead-national-recreation-area
#17
Jill A Jenkins, Michael R Rosen, Rassa O Draugelis-Dale, Kathy R Echols, Leticia Torres, Carla M Wieser, Constance A Kersten, Steven L Goodbred
Lake Mead National Recreational Area (LMNRA) serves as critical habitat for several federally listed species and supplies water for municipal, domestic, and agricultural use in the Southwestern U.S. Contaminant sources and concentrations vary among the sub-basins within LMNRA. To investigate whether exposure to environmental contaminants is associated with alterations in male common carp (Cyprinus carpio) gamete quality and endocrine- and reproductive parameters, data were collected among sub-basins over 7 years (1999-2006)...
May 2018: Environmental Research
https://www.readbyqxmd.com/read/29428506/8-year-retrospective-analysis-of-intravenous-arginine-therapy-for-acute-metabolic-strokes-in-pediatric-mitochondrial-disease
#18
Rebecca D Ganetzky, Marni J Falk
BACKGROUND: Intravenous (IV) arginine has been reported to ameliorate acute metabolic stroke symptoms in adult patients with Mitochondrial Encephalopathy with Lactic Acidosis and Stroke-like Episodes (MELAS) syndrome, where its therapeutic benefit is postulated to result from arginine acting as a nitric oxide donor to reverse vasospasm. Further, reduced plasma arginine may occur in mitochondrial disease since the biosynthesis of arginine's precursor, citrulline, requires ATP. Metabolic strokes occur across a wide array of primary mitochondrial diseases having diverse molecular etiologies that are likely to share similar pathophysiologic mechanisms...
March 2018: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29413960/total-sulfane-sulfur-bioavailability-reflects-ethnic-and-gender-disparities-in-cardiovascular-disease
#19
Saurabh Rajpal, Pavan Katikaneni, Matthew Deshotels, Sibile Pardue, John Glawe, Xinggui Shen, Nuri Akkus, Kalgi Modi, Ruchi Bhandari, Paari Dominic, Pratap Reddy, Gopi K Kolluru, Christopher G Kevil
Hydrogen sulfide (H2 S) has emerged as an important physiological and pathophysiological signaling molecule in the cardiovascular system influencing vascular tone, cytoprotective responses, redox reactions, vascular adaptation, and mitochondrial respiration. However, bioavailable levels of H2 S in its various biochemical metabolite forms during clinical cardiovascular disease remain poorly understood. We performed a case-controlled study to quantify and compare the bioavailability of various biochemical forms of H2 S in patients with and without cardiovascular disease (CVD)...
May 2018: Redox Biology
https://www.readbyqxmd.com/read/29400102/-in-vivo-analysis-of-circulating-cell-free-dna-release-and-degradation
#20
Barbara Kinga Barták, Zsófia Brigitta Nagy, Sándor Spisák, Zsolt Tulassay, Magdolna Dank, Péter Igaz, Béla Molnár
INTRODUCTION: Cell-free DNA (cfDNA) was first detected in human plasma in the 1940s, but the knowledge on its regulation and rate of release is incomplete. CfDNA can originate from both normal and tumour cells. AIM: Our aims were to investigate the rate of cfDNA's release in SHO mice/HT-29 colorectal adenocarcinoma cell line xenograft model and to define the decay of methylated and non-methylated DNA fragments in C57BL/6 bloodstream. METHOD: SHO mice were xenografted with human HT-29 cells, than blood samples were collected over 2 months...
February 2018: Orvosi Hetilap
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