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Ling-Heng Kong, Yu-Long Chen, Na Sun, Ming Wei, Juan-Xia Zhu, Xing-Li Su
OBJECTIVE: To investigate the role of calcium/calmodulin-dependent protein kinase II (CaMKII) in myocardial ischemia-reperfusion (IR) injury in isolated perfused rat heart and explore the underlying mechanisms. METHODS: An ischemia-reperfusion (IR) model was prepared using isolated rat hearts perfused with Krebs-Henseleit solution were randomly divided into control group, 2.5 µmol/L KN-93 group, IR (induced by ischemia for 45 min followed by reperfusion for 120 min) group and KN-93+IR group...
February 20, 2018: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
Sarah E D Nelson, Kim N Ha, Tata Gopinath, Mara H Exline, Alessandro Mascioni, David D Thomas, Gianluigi Veglia
Approximately, 70% of the Ca2+ ion transport into the sarcoplasmic reticulum is catalyzed by the sarcoplasmic reticulum Ca2+ -ATPase (SERCA), whose activity is endogenously regulated by phospholamban (PLN). PLN comprises a TM inhibitory region and a cytoplasmic regulatory region that harbors a consensus sequence for cAMP-dependent protein kinase (PKA). The inhibitory region binds the ATPase, reducing its apparent Ca2+ binding affinity. β-adrenergic stimulation activates PKA, which phosphorylates PLN at Ser 16, reversing its inhibitory function...
March 1, 2018: Biochimica et Biophysica Acta
Ronald D Ennis, Liangyuan Hu, Shannon N Ryemon, Joyce Lin, Madhu Mazumdar
Purpose There are no randomized trials to guide treatment decisions between radiotherapeutic and surgical options for patients with high-risk localized prostate cancer. Comparative studies have been limited by their ability to match patients on the basis of pretreatment prognostic variables and to adjust for the cancer-related, medical, and socioeconomic differences between patients who choose radiotherapeutic or surgical approaches. Methods We analyzed the outcome of all patients in the National Cancer Database with high-risk, clinically localized prostate cancer with complete prognostic data who were treated with either radical prostatectomy (RP), external beam radiotherapy (EBRT) combined with androgen deprivation (AD), or EBRT plus brachytherapy with or without AD...
February 28, 2018: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
Joseph O Primeau, Gareth P Armanious, M'Lynn E Fisher, Howard S Young
The calcium pump (a.k.a. Ca2+ -ATPase or SERCA) is a membrane transport protein ubiquitously found in the endoplasmic reticulum (ER) of all eukaryotic cells. As a calcium transporter, SERCA maintains the low cytosolic calcium level that enables a vast array of signaling pathways and physiological processes (e.g. synaptic transmission, muscle contraction, fertilization). In muscle cells, SERCA promotes relaxation by pumping calcium ions from the cytosol into the lumen of the sarcoplasmic reticulum (SR), the main storage compartment for intracellular calcium...
2018: Sub-cellular Biochemistry
Fanghao Cai, Fei Han, Hongya Wang, Haidongqin Han, Jingyun Le, Lan Lan, Ying Xu, Jianghua Chen
OBJECTIVE: To determine the association between crescents and renal outcomes, and the implications on therapeutic choices. METHODS: There were 231 patients with biopsy-proven proliferative lupus nephritis (PLN) who were divided into 4 groups: 59 patients were in the noncrescent group (NC); 59 patients exclusively with segmental crescents were in the segmental crescent group (SC); patients with circumferential crescents were categorized into 2 groups according to the crescentic ratio (C1 had 64 patients with ≤ 25%, and C2 had 49 patients with > 25%)...
February 15, 2018: Journal of Rheumatology
Karina Jahnz-Rozyk, Filip Raciborski, Andrzej M Śliwczyński, Anna Kłak, Jarosław Pinkas
Introduction: Epidemiological data on anaphylaxis have been underestimated both in Poland and worldwide. Aim: To evaluate the prevalence of anaphylaxis in Poland, including a classification by gender, age and residential region. Material and methods: The data used in the analysis were derived from two sources, the National Health Fund records of healthcare services for 2008-2015 (official statistics) and a questionnaire-based survey conducted in 2015 on a sample of 305 allergists practicing in different regions of Poland...
December 2017: Postȩpy Dermatologii i Alergologii
Yanyong Guo, Ahmed Osama, Tarek Sayed
Despite the recognized benefits of cycling as a sustainable mode of transportation, cyclists are considered vulnerable road users and there are concerns about their safety. Therefore, it is essential to investigate the factors affecting cyclist safety. The goal of this study is to evaluate and compare different approaches of modeling macro-level cyclist safety as well as investigating factors that contribute to cyclist crashes using a comprehensive list of covariates. Data from 134 traffic analysis zones (TAZs) in the City of Vancouver were used to develop macro-level crash models (CM) incorporating variables related to actual traffic exposure, socio-economics, land use, built environment, and bike network...
February 1, 2018: Accident; Analysis and Prevention
Kai Yee Chin, Lokugan S Silva, Ian A Darby, Dominic C H Ng, Owen L Woodman
BACKGROUND: Flavonols, including 3',4'-dihydroxyflavonol (DiOHF), reduce myocardial ischemia and reperfusion (I/R) injury but their mechanism remains uncertain. To better understand the mechanism of the cardioprotective actions of flavonols we investigated the effect of DiOHF on cardiac function and the activation of protective and injurious signalling kinases after I/R in rat isolated hearts. METHODS: We assessed the effect of global ischemia (20min) and reperfusion (5-30min) on cardiac function and injury in rat isolated, perfused hearts in the absence or presence of DiOHF (10μM) during reperfusion...
March 1, 2018: International Journal of Cardiology
Tomoki Hatanaka, Koki Otsuka, Toshimoto Kimura, Masanori Hakozaki, Mizunori Yaegashi, Megumu Kamishima, Takanori Miyake, Kiyoharu Takashimizu, Kei Sato, Hitoshi Fujii, Teppei Matsuo, Takeshi Takahara, Yuji Akiyama, Takeshi Iwaya, Hiroyuki Nitta, Keisuke Koeda, Masaru Mizuno, Akira Sasaki
A 66-year-old man diagnosed with rectal cancer underwent high anterior resection and received adjuvant chemotherapy (UFT plus UZEL). One year after the surgery, lung and para-aortic lymph node(PLN)metastases were identified. We chose mFOLFOX6 for first-line chemotherapy. After 7 courses, we changed the regimen to sLV5FU2 because of Grade 3 neuropathy. After 5 courses, to treat progressive disease(PD), we changed the regimen to FOLFIRI. Then, the patient had stable disease (SD), and surgical excision was performed for both lung and lymph node recurrence without adjuvant chemotherapy...
November 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
Roberto Berretta, Vito Andrea Capozzi, Giulio Sozzi, Lavinia Volpi, Valentina Ceni, Mauro Melpignano, Giovanna Giordano, Federico Marchesi, Michela Monica, Maurizio Di Serio, Matteo Riccò, Marcello Ceccaroni
PURPOSE: The aim of this retrospective study is to analyze the prognostic role and the practical implication of mesenteric lymph nodes (MLN) involvements in advanced ovarian cancer (AOC). METHODS: A total of 429 patients with AOC underwent surgery between December 2007 and May 2017. We included in the study 83 patients who had primary (PDS) or interval debulking surgery (IDS) for AOC with bowel resection. Numbers, characteristics and surgical implication of MLN involvement were considered...
January 27, 2018: Archives of Gynecology and Obstetrics
Sung Wook Park, Shawna D Persaud, Stanislas Ogokeh, Tatyana A Meyers, DeWayne Townsend, Li Na Wei
Excessive and/or persistent activation of calcium-calmodulin protein kinase II (CaMKII) is detrimental in acute and chronic cardiac injury. However, intrinsic regulators of CaMKII activity are poorly understood. We find that cellular retinoic acid binding protein 1 (CRABP1) directly interacts with CaMKII, and uncover a functional role for CRABP1 in regulating CaMKII activation. We generated Crabp1 null mice (CKO) in C57BL/6J background for pathophysiological studies. CKO mice develop hypertrophy as adults, exhibiting significant left ventricular dilation with reduced ejection fraction at the baseline cardiac function...
January 25, 2018: Journal of Endocrinology
Ashok Kumar, B C Kalmath, Georgi Abraham, Johann Christopher, Pln Kaparthi, Louie Fischer, Neeta Deshpande, N K Mishra, Praveen Raj, Rajesh Javerani, Ramesh Goyal, Reefa Dsouza, Shashank R Joshi
Despite maintaining mean blood pressure at optimal levels, cardiovascular complications still occur in hypertensive patients. Blood pressure variability (BPV) has been implicated as a prominent factor responsible for incurring this additional risk. In this review we attempted to generate a consensus on the importance of BPV in the hypertension management and to evaluate different therapeutic options available to reduce BPV. Panel comprising of 11 leading experts from India in different areas of clinical practice (including nephrology, diabetes and endocrinology, cardiology, and critical care medicine) was convened...
December 2017: Journal of the Association of Physicians of India
Chuanben Chen, Zhizhong Lin, Youping Xiao, Penggang Bai, Qiuyuan Yue, Yunbin Chen, Lisha Chen
To assess the utility of apparent diffusion coefficient (ADC) determined on diffusion-weighted MR imaging (DWI) to differentiate between benign and malignant parotid area lymph nodes (PLN) in nasopharyngeal carcinoma (NPC) patients. Thirty-nine consecutive NPC patients with a total of 40 enlarged, biopsied PLNs underwent DWI examination. ADC values for benign and malignant PLNs were measured and compared. Receiver operating characteristic (ROC) curve analysis was to evaluate the optimal threshold level of ADC values for metastatic PLNs...
January 10, 2018: Scientific Reports
Lennart J de Vries, Mihran Martirosyan, Ron T van Domburg, Sip A Wijchers, Tamas Géczy, Tamas Szili-Torok
PURPOSE: Coupling interval (CI) variability of premature ventricular contractions (PVCs) is influenced by the underlying arrhythmia mechanism. The aim of this study was to compare CI variability of PVCs in different myocardial disease entities, in order to gain insight into their arrhythmia mechanism. METHODS: Sixty-four patients with four underlying pathologies were included: idiopathic (n = 16), non-ischemic dilated cardiomyopathy (NIDCM) (n = 16), familial cardiomyopathy (PLN/LMNA) (n = 16), and post-MI (n = 16)-associated PVCs...
January 5, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
Chao-Yi Wu, Hui-Ping Chien, Huang-Yu Yang, Tsung-Chieh Yao, Min-Hua Tseng, Mei-Chin Yu, Kuo-Wei Yeh, Jing-Long Huang
BACKGROUND: Raising evidence suggested a prognostic utility of tubulointerstitial lesions in lupus nephritis (LN). The exact prevalence of tubulointerstitial abnormalities and its predictive value among pediatric onset systemic lupus erythematous (pSLE) cases, however, remained unknown. METHODS: Sixty-seven pSLE subjects diagnosed with LN with initial renal samples available were enrolled and followed for an average of 6.49 ± 3.06 years. Renal histology was evaluated according to the International Society of Nephrology/Renal Pathology Society classification, National Institute of Health classification and tubulointerstitial activity index (TIAI)...
December 15, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
Nenad Lucic, Dragica Draganovic, Sanja Sibincic, Vesna Ecim-Zlojutro, Snjezana Milicevic
Objective: The aim of this work is to show the importance of the depth of myometrium invasion, tumour size and lymphovascular invasion as prognostic factors in dissemination of lymphatic nodes at endometrial carcinoma (CE). Materials and methods: In the period from 2010 to 2015 at the University Clinic for Gynecology and Obstetrics in Banja Luka, 221 endometrial cancer surgeries were done (laparatomy 184-83%, laparascopy 37-16,74%). Patients who had uterus bleeding in peri/postmenopause or those whose endometrium thickness was bigger than 5 mm which was established by ultrasound, or those who had in their cavum uteri pathological (PH) diagnosis, underwent fractional curettage (FC) or hysteroscopy in order to obtain pathohistological endometrium diagnosis...
October 2017: Medical Archives
Robin Rajan, Manoj K Sabnani, Vikram Mavinkurve, Hilary Shmeeda, Hossein Mansouri, Sandrine Bonkoungou, Alexander D Le, Laurence M Wood, Alberto A Gabizon, Ninh M La-Beck
Liposomal nanoparticles are the most commonly used drug nano-delivery platforms. However, recent reports show that certain pegylated liposomal nanoparticles (PLNs) and polymeric nanoparticles have the potential to enhance tumor growth and inhibit antitumor immunity in murine cancer models. We sought herein to identify the mechanisms and determine whether PLN-associated immunosuppression and tumor growth can be reversed using alendronate, an immune modulatory drug. By conducting in vivo and ex vivo experiments with the immunocompetent TC-1 murine tumor model, we found that macrophages were the primary cells that internalized PLN in the tumor microenvironment and that PLN-induced tumor growth was dependent on macrophages...
December 22, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
Emanuelle Jesus Silva, Leonardo Gomes Souza, Luis Antonio Dantas Silva, Stephania Fleury Taveira, Raquel Ciffarello Guilger, Luciano Morais Liao, Luiz Henrique Keng Queiroz Junior, Mabio Joao Santana, Ricardo Neves Marreto
BACKGROUND: Topotecan (TPT) is a water-soluble derivate of camptothecin, which undergoes ring-opening hydrolysis in neutral solutions, leading to stability loss and poor cellular uptake. Lipid nanoencapsulation can improve TPT stability, and polymer-lipid hybrid nanoparticles (PLN) are interesting alternatives to improve TPT nanoencapsulation. OBJECTIVE: This study seeks to prepare complexes between the cationic TPT and the negatively charged dextran sulfate (DS) with a view of improving drug loading, chemical stability and release control...
December 14, 2017: Current Drug Delivery
Raj K S Badhan, Swapnil Khadke, Yvonne Perrie
The pharmacokinetics of a liposomal subunit antigen vaccine system composed of the cationic lipid dimethyldioctadecylammonium bromide (DDA) and the immunostimulatory agent trehalose 6,6-dibehenate (TDB) (8:1 molar ratio) combined with the Ag85B-ESAT-6 (H1) antigen were modelled using mouse in-vivo data. Compartment modelling and physiologically based pharmacokinetics (PBPK) were used to predict the administration site (muscle) and target site (lymph) temporal concentration profiles and factors governing these...
December 7, 2017: Pharmaceutics
Erin M Riley, Holly Z Hattaway, P Arthur Felse
Background: Electronic lab notebooks (ELNs) are better equipped than paper lab notebooks (PLNs) to handle present-day life science and engineering experiments that generate large data sets and require high levels of data integrity. But limited training and a lack of workforce with ELN knowledge have restricted the use of ELN in academic and industry research laboratories which still rely on cumbersome PLNs for recordkeeping. We used LabArchives, a cloud-based ELN in our bioprocess engineering lab course to train students in electronic record keeping, good documentation practices (GDPs), and data integrity...
2017: Journal of Biological Engineering
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