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https://www.readbyqxmd.com/read/28435017/association-of-paraoxonase-1-and-oxidative-stress-with-acute-kidney-injury-in-premature-asphyxiated-neonates
#1
Jasmina Ivanišević, Jelena Kotur-Stevuljević, Aleksandra Stefanović, Milica Miljković, Zorana Jelić-Ivanović, Biljana Pejović, Amira Peco-Antić
OBJECTIVES: Acute kidney injury (AKI) is defined as decrease in glomerular filtration rate with increase in serum creatinine (sCr). Perinatal asphyxia (PNA) may be an ethiological factor for AKI with oxidative stress also implicated. Paraoxonase 1 (PON1) has been reported to be decreased in renal diseases. The aim of our study was to evaluate paraoxonase 1 (PON1) and oxidative stress status, their change during the first hours and days of life and the ability of these parameters to discriminate neonates having AKI from those who do not have it...
April 20, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28429826/effect-of-alpha-lipoic-acid-on-endometrial-implants-in-an-experimental-rat-model
#2
Neslihan Pınar, Oya Soylu Karapınar, Oğuzhan Özcan, Tümay Özgür, Suphi Bayraktar
To investigate the antioxidant and anti-inflammatory effects of alpha-lipoic acid (ALA) in the treatment of endometriosis in an experimental rat model by evaluating biochemical and histopathologic parameters. Experimental endometriosis was induced by the peritoneal implantation of autologous endometrial tissue. The rats were randomly divided into two groups with 8 rats each. Group I was intraperitoneally administered ALA 100 mg/kg/day for 14 days. Group II was intraperitoneally administered saline solution at the same dosage and over the same period...
April 21, 2017: Fundamental & Clinical Pharmacology
https://www.readbyqxmd.com/read/28429624/impact-of-high-dose-oleuropein-on-cisplatin-induced-oxidative-stress-genotoxicity-and-pathological-changes-in-rat-stomach-and-lung
#3
Fatime Geyikoglu, Hatice Isikgoz, Hakan Onalan, Suat Colak, Salim Cerig, Murat Bakir, Mirkhalil Hosseinigouzdagani, Kubra Koc, Huseyin Serkan Erol, Yavuz Selim Saglam, Serkan Yildirim
The current systemic treatments of the various solid tumors involve Cisplatin (CIS)-based chemotherapy. Due to its cytotoxicity, this approach is limited. Moreover, the safety of CIS is only discussed especially in breast and stomach cancers. Therefore, we, for the first time, explored the restorative efficacy of oleuropein (OLE), in stomach and lung injuries induced by CIS. Sprague-Dawley rats were divided into eight groups: control CIS, OLE and CIS + OLE. Single dose of (7 mg/kg) CIS was administered intraperitoneally to CIS and CIS + OLE groups...
April 21, 2017: Journal of Asian Natural Products Research
https://www.readbyqxmd.com/read/28422344/use-of-blood-pool-agents-with-steady-state-mri-to-assess-the-vascular-system
#4
Avnesh S Thakor, John Chung, Premal Patel, Anthony Chan, Amdad Ahmed, Graeme McNeil, David M Liu, Bruce Forster, Darren Klass
Over the past two decades there have been significant advances in the use of magnetic resonance imaging (MRI) to assess the vascular system. New imaging sequences and improvements in magnet design have enabled the creation of higher spatial resolution images. MRI is now a viable alternative imaging modality when compared to both invasive angiography and computed tomographic angiography. The use of blood pool agents has further facilitated the use of MR angiography (MRA); their high molecular weight allows for lower doses of contrast medium administration while their prolonged presence in the blood stream allows for repeated high-quality volumetric imaging of both the arterial and venous circulation...
April 19, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28419090/the-co-existence-of-transcriptional-activator-and-transcriptional-repressor-mef2-complexes-influences-tumor-aggressiveness
#5
Eros Di Giorgio, Elisa Franforte, Sebastiano Cefalù, Sabrina Rossi, Angelo Paolo Dei Tos, Monica Brenca, Maurizio Polano, Roberta Maestro, Harikrishnareddy Paluvai, Raffaella Picco, Claudio Brancolini
The contribution of MEF2 TFs to the tumorigenic process is still mysterious. Here we clarify that MEF2 can support both pro-oncogenic or tumor suppressive activities depending on the interaction with co-activators or co-repressors partners. Through these interactions MEF2 supervise histone modifications associated with gene activation/repression, such as H3K4 methylation and H3K27 acetylation. Critical switches for the generation of a MEF2 repressive environment are class IIa HDACs. In leiomyosarcomas (LMS), this two-faced trait of MEF2 is relevant for tumor aggressiveness...
April 18, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28403921/oxidative-and-antioxidative-status-in-the-endometrium-of-patients-with-benign-gynecological-disorders
#6
C Nayki, U Nayki, M Gunay, M Kulhan, M Çankaya, A Humeyra Taskın Kafa, G Balci
AIM: Oxidative stress and impaired antioxidative system are implicated in the development of many disease states including gynecological diseases. In the present study, we aimed to investigate the oxidative-antioxidative status in endometrium of patients diagnosed with benign gynecological disorders. METHODS: Samples of endometria and blood were obtained from 65 patients admitted to our center for abnormal uterine bleeding or postmenopausal bleeding. Endometrial biopsy was performed for the evaluation of histopathology and oxidative-antioxidative status in endometrial tissue...
March 2017: J Gynecol Obstet Hum Reprod
https://www.readbyqxmd.com/read/28402715/protective-effect-of-cordycepin-on-experimental-testicular-ischemia-reperfusion-injury-in-rats
#7
Mehmet Hanifi Okur, Serkan Arslan, Bahattin Aydogdu, Hikmet Zeytun, Erol Basuguy, Mehmet Serif Arslan, Ibrahim Ibiloglu, Ibrahim Kaplan
OBJECTIVE: To investigate the role of cordycepin in testicular ischemia/reperfusion injury in rats. MATERIALS AND METHODS: Forty Wistar albino rats were randomly divided into four groups, as follows: group one, control (C); group two, torsion and ischemia (I); group three: detorsion with ischemia-reperfusion (IR); and group four, detorsion/cordycepin. The rats were then analyzed macromorphologically and histopathologically, and blood tests were performed. Specifically, the total oxidant status (TOS) and total antioxidant status (TAS) were determined, and malondialdehyde (MDA), tumor necrosis factor (TNF)-α, interleukin (IL)-6, and IL-1β levels were analyzed...
April 12, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28396944/the-effects-of-septoplasty-surgery-on-serum-oxidative-stress-levels
#8
Adnan Ekinci, Duran Karataş, Abdurrahman Yetiş, Emre Demir, Muge Ozcan
The aim of this study is to compare the total antioxidant status (TAS), total oxidant status (TOS), and paraoxonase (PON1) serum levels in patients who have undergone septoplasty (NSD). Forty-six patients (mean age 33.7) aged between 18 and 50 years who were diagnosed with nasal septal deviation (NSD) were included in the study. The TAS, TOS, and PON1 levels were compared in the serum samples obtained 1 month before the septoplasty and 3 months after surgery. There was a significant increase in mean TAS after septoplasty (1...
April 10, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28383167/hspa8-as-a-novel-fusion-partner-of-nr4a3-in-extraskeletal-myxoid-chondrosarcoma
#9
Milena Urbini, Annalisa Astolfi, Maria Abbondanza Pantaleo, Salvatore Serravalle, Angelo Paolo Dei Tos, Piero Picci, Valentina Indio, Marta Sbaraglia, Stefania Benini, Alberto Righi, Marco Gambarotti, Alessandro Gronchi, Chiara Colombo, Gian Paolo Dagrada, Silvana Pilotti, Roberta Maestro, Maurizio Polano, Maristella Saponara, Giuseppe Tarantino, Andrea Pession, Guido Biasco, Paolo Giovanni Casali, Silvia Stacchiotti
Extraskeletal myxoid chondrosarcoma (EMC) is a very rare sarcoma most often arising in the soft tissue. Rare EMC of the bone have been reported. EMC exhibits distinctive clinico-pathological and genetic features; however, despite the name, it lacks any feature of cartilaginous differentiation. EMC is characterized by the rearrangement of the NR4A3, which, in most cases (about 62-75%), is fused with EWSR1 and less frequently with other partners, including TAF15 (27%), TCF12 (4%), TFG and FUS. We herein report the identification by whole-transcriptome sequencing of HSPA8 as a novel fusion partner of NR4A3 in a case of EMC...
April 6, 2017: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/28380297/molecular-dynamics-study-of-morphology-of-doped-pedot-from-solution-to-dry-phase
#10
Juan Felipe Franco-Gonzalez, Igor V Zozoulenko
Morphology of the conducting polymer PEDOT:TOS (poly(3,4-ethylenedioxythiophene) doped with molecular tosylate) and its crystallization in aqueous solution were studied using atomistic molecular dynamics simulations. It was found that (a) PEDOT comprises crystallite aggregates consisting of 3-6 π-π stacked chains. The crystallites are linked by interpenetrating π-π stacked chains such that percolative paths in the structure are formed. (b) The size of the crystallites depends on the water content, but the π-π stacking distance is practically independent of the chain length, charge concentration and water content...
April 17, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28375086/relationship-of-oxidative-stress-with-elevated-level-of-dna-damage-and-homocysteine-in-cardiovascular-disease-patients
#11
Muhammad Qasim, Shazia Anwer Bukhari, Madiha Javeed Ghani, Muhammad Shareef Masoud, Tayyabah Huma, Muhammad Arshad, Asma Haque, Zubair Ibrahim, Sadia Javed, Muhammad Ibrahim Rajoka
Amounts of DNA damage and homocysteine (Hcy) in heart patients blood may have strong function in the causation of cardiovascular disease (CVD). The main objective of this work was to know experimentally the role of total oxidants (produced by Reactive Oxygen species (ROS), clinical biochemical indices, their oxidized products and total antioxidant status (TAS) among such patients to find the association of homocysteine, total oxidation status (TOS) and oxidative DNA damage with other clinical parameters in sixty positive CVD patients compared with those of 60 normal subjects...
November 2016: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28373794/evaluation-of-oxidative-stress-in-bipolar-disorder-in-terms-of-total-oxidant-status-total-antioxidant-status-and-oxidative-stress-index
#12
Merve Cingi Yirün, Kübranur Ünal, Neslihan Altunsoy Şen, Onur Yirün, Çiğdem Aydemir, Erol Göka
INTRODUCTION: Bipolar disorder is one of the most debilitating psychiatric disorders characterized by disruptive episodes of mania/hypomania and depression. Considering the complex role of biological and environmental factors in the etiology of affective disorders, recent studies have focused on oxidative stress, which may damage nerve cell components and take part in pathophysiology. The aim of the present study was to contribute to the data about oxidative stress in bipolar disorder by detecting the total antioxidant status (TAS), total oxidant status (TOS), and oxidative stress index (OSI) levels of manic episode (ME) and euthymic (EU) patients and by comparing these results with those of healthy controls (HCs)...
September 2016: Noro Psikiyatri Arsivi
https://www.readbyqxmd.com/read/28368585/exploring-derivatives-of-quinazoline-alkaloid-l-vasicine-as-cap-groups-in-the-design-and-biological-mechanistic-evaluation-of-novel-antitumor-histone-deacetylase-inhibitors
#13
Mudassier Ahmad, Mushtaq A Aga, Javeed Ahmad Bhat, Brijesh Kumar, Abdul Rouf, Neena Capalash, Mubashir Javeed Mintoo, Ashok Kumar, Priya Mahajan, Dilip Manikrao Mondhe, Amit Nargotra, Parduman Raj Sharma, Mohmmad Afzal Zargar, Ram A Vishwakarma, Bhahwal Ali Shah, Subhash Chandra Taneja, Abid Hamid
l-Vasicine is a quinazoline alkaloid with an electron dense ring and additional functionalities in its structure. Employing target oriented synthesis (TOS) based on in silico studies, molecules with significant docking scores containing different derivatives of l-vasicine as caps were synthesized. Interestingly, one molecule, i.e., 4a, which contained 3-hyroxypyrrolidine as a cap group and a six carbon long aliphatic chain as a linker was found to inhibit HDACs. 4a showed more specificity toward class I HDAC isoforms...
April 13, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28361557/protective-effect-of-alpha-lipoic-acid-in-methotrexate-induced-ovarian-oxidative-injury-and-decreased-ovarian-reserve-in-rats
#14
Oya Soylu Karapinar, Neslihan Pinar, Oğuzhan Özcan, Tümay Özgür, Kenan Dolapçıoğlu
To determine whether the possible oxidative effect of methotrexate (Mtx) on ovary and to evaluate the effectiveness of alpha lipoic acid (ALA), which may be useful in many oxidative stress models. Thirty-two female Wistar-albino rats were randomly divided into four groups; control group, alpha lipoic acid group (ALA 100 mg/kg, 10 days), multiple dose Mtx group (Mtx 1 mg/kg 1, 3, 5, 7 days) and Mtx and ALA group (Mtx 1 mg/kg 1, 3, 5, 7 days and ALA 100 mg/kg, 10 days). Serum total antioxidant status (TAS), total oxidant status (TOS) and oxidative stress index (OSI), tumor necrosis factor-alpha (TNF-α), tissue malondialdehyde (MDA) and activities of glutathione peroxidase (GSH-Px) and catalase (CAT) and anti-Mullerian hormone (AMH) and total ovarian follicle count were evaluated...
March 31, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28361553/phytochemical-analysis-and-antioxidant-activity-of-the-seed-of-telfairia-occidentalis-hook-cucurbitaceae
#15
Olorunfemi A Eseyin, Akaninyene Daniel, Thomas S Paul, Emmanuel Attih, Essien Emmanuel, Johnson Ekarika, Abdul Sattar Munavvar Zubaid, Ahmad Ashfaq, Sheryar Afzal, Akpan Ukeme
The 2,2-diphenyl-1-picryl hydrazyl (DPPH) radical, nitric oxide, reducing power, hydrogen peroxide scavenging, and total antioxidant activities of the methanol extract, n-hexane, dichloromethane, ethyl acetate, butanol and aqueous fractions of the seed of Telfairia occidentalis were evaluated. Total phenolic content was determined using the Folin-Ciocalteu method. The dichloromethane fraction exhibited the highest DPPH radical scavenging, reducing power and total antioxidant activities. Two pure compounds which were identified by FTIR, H-and 2D NMR and Mass spectroscopy as 9-octadecenoic acid (TOS B) and 10-hydroxyoctadecanoic acid (TOS C) and four oily isolates, TOS A, TOS D, TOS E and TOS F were obtained from the dichloromethane fraction...
March 31, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28347226/colorectal-polypoid-lesions-and-expression-of-vascular-endothelial-growth-factor-in-a-consecutive-series-of-endoscopic-and-surgical-patients
#16
Cesare Ruffolo, Luisa Toffolatti, Fabio Canal, Andromachi Kotsafti, Giulia Pagura, Anna Pozza, Marta Campo Dell'Orto, Francesco Ferrara, Marco Massani, Angelo P Dei Tos, Carlo Castoro, Nicolò Bassi, Marco Scarpa
Colorectal cancer incidence in patients undergoing screening protocols is decreasing because of the higher rate of discovered preneoplastic colonic lesions; however, adenomatous polyps may not always be removable endoscopically and surgery may still be necessary. The aim of this study was to assess the vascular endothelial growth factor expression in the different steps of colorectal carcinogenesis to explore its potential role as a marker of malignancy in polypoid lesions. A total of 92 subjects with colonic adenoma or cancer who underwent screening colonoscopy or surgery were prospectively enrolled...
March 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28347201/the-relationship-between-the-helicobacter-pylori-seropositivity-with-systemic-and-local-oxidative-status-and-hyperemesis-gravidarum-a-pilot-study
#17
Abdullah Göymen, İbrahim Özdurak, Şükran Esra Özkaplan, Yavuz Şimsek, Fazıl Avcı, Yaşam Kemal Akpak
OBJECTIVES: The aim of study was to determine the helicobacter pylori seropositivity and oxidative parameters in serum and saliva of pregnant women with poor oral hygiene and Hyperemesis gravidarum (HG). METHODS: A case-control study was conducted involving 50 pregnant women in their first trimester of pregnancy. Twenty-five subjects had a diagnosis of HG, and remaining 25 were healthy pregnant women who served as control subjects were included. The groups were adjusted for age, parity, and gestational week...
March 27, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28325685/a-positive-feedback-strategy-for-enhanced-chemotherapy-based-on-ros-triggered-self-accelerating-drug-release-nanosystem
#18
Jing-Jing Hu, Qi Lei, Meng-Yun Peng, Di-Wei Zheng, Yi-Xuan Chen, Xian-Zheng Zhang
Here, a positive feedback strategy was utilized to amplify the concentration of intracellular reactive oxygen species (ROS) and a ROS-triggered self-accelerating drug release nanosystem (defined as T/D@RSMSNs) was demonstrated for enhanced tumor chemotherapy. The mesoporous silica nanoparticles (MSNs) based nanocarriers were gated by β-cyclodextrin (β-CD) through the ROS-cleavable thioketal (TK) linker to encapsulate the anticancer drug doxorubicin hydrochloride (DOX) and ROS producing agent α-tocopheryl succinate (α-TOS), whose surface was further anchored with adamantane conjugated poly(ethylene glycol) chain (AD-PEG) via host-guest interaction...
March 11, 2017: Biomaterials
https://www.readbyqxmd.com/read/28320109/protective-effect-of-dexpanthenol-against-nephrotoxic-effect-of-amikacin-an-experimental-study
#19
Elif Ece Doğan, Reha Erkoç, İskender Ekinci, Jamshid Hamdard, Barış Döner, Mehmet Ali Çıkrıkçıoğlu, Cumali Karatoprak, Ganime Çoban, Ömer Faruk Özer, Rümeyza Kazancıoğlu
BACKGROUND: Amikacin has the largest spectrum among aminoglycosides, its nephrotoxic effect limits its utilization. Our purpose in this study is to review the protective effect of dexpanthenol against the nephrotoxic effect of amikacin, accompanied with histopathological and biochemical parameters. METHODS: 32 rats were randomly separated into four groups with eight in each (amikacin (1.2mg/kg/day), amikacin (1.2mg/kg/day)+dexpanthenol (500mg/kg/day), dexpanthenol (500mg/kg/day) and control)...
March 19, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28319407/investigation-of-procalcitonin-il-6-oxidative-stress-index-osi-plasma-and-tissue-levels-in-experimental-mild-and-severe-pancreatitis-in-rats
#20
M Soyalp, M Yalcin, V Oter, A Ozgonul
AIM: This study was planned to evaluate blood and tissue levels of procalcitonin, IL-6 and Oxidative Stress Index (OSI), which have a role in the pathophysiology of inflammation, in rats with experimental mild and severe pancreatitis. MATERIAL AND METHODS: Thirty male Wistar Albino rats were included in the study and the rats were equally divided into the three groups. After 1, 5 and 24 hours, blood was obtained from the tail of all rats and samples were taken from pancreas tissue after 24 hours...
2017: Bratislavské Lekárske Listy
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