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Therapeutic plasma exchange

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https://www.readbyqxmd.com/read/27889539/pharmacodynamics-of-s-dimethylarsino-glutathione-a-putative-metabolic-intermediate-of-inorganic-arsenic-in-mice
#1
Ayaka Kato, Yayoi Kobayashi, Osamu Udagawa, Seishiro Hirano
Inorganic arsenicals are well-known carcinogens, whereas arsenite (iAs(III)) compounds are now recognized as potent therapeutic agents for several leukemias, and arsenic trioxide has been used for the treatment of recurrent acute promyelocytic leukemia (APL). However, recent clinical trials revealed that arsenite is not always effective for non-APL malignancies. Another arsenical, S-dimethylarsino-glutathione ([DMA(III)(GS)]), which is a putative metabolic intermediate in the hepatic metabolism of iAs(III), shows promise for treating several types of lymphoma...
November 23, 2016: Biochemical Pharmacology
https://www.readbyqxmd.com/read/27870250/new-insights-into-interactions-between-the-nucleotide-binding-domain-of-cftr-and-keratin-8
#2
Aiswarya Premchandar, Anna Kupniewska, Arkadiusz Bonna, Grazyna Faure, Tomasz Fraczyk, Ariel Roldan, Brice Hoffmann, Mélanie Faria da Cunha, Harald Herrmann, Gergely L Lukacs, Aleksander Edelman, Michał Dadlez
The intermediate filament protein keratin 8 (K8) interacts with the nucleotide-binding domain 1 (NBD1) of the cystic fibrosis transmembrane regulator (CFTR) with phenylalanine 508 deletion (ΔF508), and this interaction hampers the biogenesis of functional ΔF508-CFTR and its insertion into the plasma membrane. Interruption of this interaction may constitute a new therapeutic target for cystic fibrosis patients bearing the ΔF508 mutation. Here we aimed to determine the binding surface between these two proteins, to facilitate the design of the interaction inhibitors...
November 21, 2016: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/27837102/treatment-dilemmas-in-guillain-barr%C3%A3-syndrome
#3
REVIEW
Christine Verboon, Pieter A van Doorn, Bart C Jacobs
Guillain-Barré syndrome (GBS) is an acute polyradiculoneuropathy with a highly variable clinical course and outcome. Intravenous immunoglobulin (IVIg) and plasma exchange are proven effective treatments, but the efficacy has been demonstrated mainly on motor improvement in adults with a typical and severe form of GBS. In clinical practice, treatment dilemmas may occur in patients with a relatively mild presentation, variant forms of GBS, or when the onset of weakness was more than 2 weeks ago. Other therapeutic dilemmas may arise in patients who do not improve or even progress after initial treatment...
November 11, 2016: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/27836604/colorimetric-assay-of-heparin-in-plasma-based-on-the-inhibition-of-oxidase-like-activity-of-citrate-capped-platinum-nanoparticles
#4
Jyun-Guo You, Yao-Wen Liu, Chi-Yu Lu, Wei-Lung Tseng, Cheng-Ju Yu
We report citrate-capped platinum nanoparticles (Pt NPs) as oxidase mimetics for effectively catalyzing the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB), 2,2'-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid), dopamine, and methylene blue in the presence of O2. To confirm oxidase-like activity of citrate-capped Pt NPs, their activity toward oxygen reduction reaction was studied using cyclic voltammetry and rotating ring-disk electrode method. The results obtained showed that Pt NP NPs can catalyze the oxidation of organic substrates to the colored product and the reduction of oxygen to water through a four-electron exchange process...
October 30, 2016: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/27826871/anti-n-methyl-d-aspartate-receptor-encephalitis-after-herpes-simplex-virus-associated-encephalitis-an-emerging-disease-with-diagnosis-and-therapeutic-challenges
#5
Flora Schein, Amandine Gagneux-Brunon, Jean-Christophe Antoine, Sylvie Lavernhe, Sylvie Pillet, Stéphane Paul, Anne Frésard, Claire Boutet, Rémi Grange, Céline Cazorla, Frédéric Lucht, Elisabeth Botelho-Nevers
INTRODUCTION: Morbidity and mortality of Herpes simplex virus encephalitis (HSE) remain high. Relapses of neurological signs may occur after initial clinical improvement under acyclovir treatment. METHODS: We report here a case of post-HSE anti-N-methyl-d-aspartate receptor-mediated encephalitis in an adult and perform a systematic search on PubMed to identify other cases in adults. RESULTS: We identified 11 previously published cases, to discuss diagnostic and therapeutic management...
November 8, 2016: Infection
https://www.readbyqxmd.com/read/27816537/serine-proteinases-from-bothrops-snake-venom-activates-pi3k-akt-mediated-angiogenesis
#6
Shreesha K Bhat, Manjunath B Joshi, Anwar Ullah, Rehana Masood, Setlur G Biligiri, Raghuvir K Arni, Kapaettu Satyamoorthy
The discovery of rapid acting and powerful angiogenic proteins are of significant interest in the treatment of various human disorders associated with insufficient angiogenesis such as ischemia, menorrhagia and delayed wound healing. Snake venoms consist of a mixture of bioactive proteins and polypeptides and are rich sources of pharmacologically important molecules. Serine proteinases are one of the abundant proteins present in Bothrops snake venoms and possess multiple biological functions including the regulation of the blood coagulation cascade...
December 15, 2016: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/27807630/-role-of-plasmapheresis-and-immunoadsorption-in-salvage-therapy-of-rheumatological-diseases
#7
M Boser, J T Kielstein
Many rheumatological diseases are either caused by specific known proteins, such as antibodies or mediated by a plethora of cytokines. Both the unspecific immunosuppressive therapy and the specific action of biologics usually require time to be effective; therefore, extracorporeal forms of treatment are increasingly being employed in severe forms of rheumatological diseases as well as in patients who cannot tolerate pharmacological treatment or where the risk of pharmacological treatment may outweigh the potential benefits...
December 2016: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/27802917/development-and-validation-of-lc-ms-ms-assay-for-the-simultaneous-determination-of-methotrexate-6-mercaptopurine-and-its-active-metabolite-6-thioguanine-in-plasma-of-children-with-acute-lymphoblastic-leukemia-correlation-with-genetic-polymorphism
#8
Medhat A Al-Ghobashy, Said A Hassan, Doaa H Abdelaziz, Noha M Elhosseiny, Nirmeen A Sabry, Ahmed S Attia, Manal H El-Sayed
Individualized therapy is a recent approach aiming to specify dosage regimen for each patient according to its genetic state. Cancer chemotherapy requires continuous monitoring of the plasma concentration levels of active forms of cytotoxic drugs and subsequent dose adjustment. In order to attain optimum therapeutic efficacy, correlation to pharmacogenetics data is crucial. In this study, a specific, accurate and sensitive liquid chromatography tandem mass spectrometry (LC-MS/MS) has been developed for determination of methotrexate (MTX), 6-mercaptopurine (MP) and its metabolite 6-thioguanine nucleotide (TG) in human plasma...
December 1, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/27801990/inhibition-of-complement-in-guillain-barr%C3%A3-syndrome-the-ica-gbs-study
#9
Amy I Davidson, Susan K Halstead, John A Goodfellow, Govind Chavada, Arup Mallik, James Overell, Michael P Lunn, Alex McConnachie, Pieter van Doorn, Hugh J Willison
The outcome of Guillain-Barré syndrome remains unchanged since plasma exchange and intravenous immunoglobulin were introduced over 20 years ago. Pathogenesis studies on GBS have identified the terminal component of complement cascade as a key disease mediator and therapeutic target. We report the first use of terminal complement pathway inhibition with eculizumab in humans with GBS. In a randomised, double-blind, placebo-controlled trial, 28 subjects eligible on the basis of GBS disability grade of at least 3 were screened, of whom 8 (29%) were randomised...
November 1, 2016: Journal of the Peripheral Nervous System: JPNS
https://www.readbyqxmd.com/read/27789124/use-of-the-apache-ii-score-to-assess-impact-of-therapeutic-plasma-exchange-for-critically-ill-patients-with-hypertriglyceride-induced-pancreatitis
#10
Shazia Nakhoda, Ann B Zimrin, Maria R Baer, Jennie Y Law
OBJECTIVES: Hypertriglyceridemic (HTG) pancreatitis carries significant morbidity and mortality and often requires intensive care unit (ICU) admission. Therapeutic plasma exchange (TPE) rapidly lowers serum triglyceride (TG) levels. However, evidence supporting TPE for HTG pancreatitis is lacking. METHODS: Ten patients admitted to the ICU for HTG pancreatitis underwent TPE at our institution from 2005-2015. We retrospectively calculated the Acute Physiology and Chronic Health Examination II (APACHE II) score at the time of initial TPE and again after the final TPE session to assess the impact of triglyceride apheresis on morbidity and mortality associated with HTG pancreatitis...
October 17, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/27782215/stoichiometric-and-irreversible-cysteine-selective-protein-modification-using-carbonylacrylic-reagents
#11
Barbara Bernardim, Pedro M S D Cal, Maria J Matos, Bruno L Oliveira, Nuria Martínez-Sáez, Inês S Albuquerque, Elizabeth Perkins, Francisco Corzana, Antonio C B Burtoloso, Gonzalo Jiménez-Osés, Gonçalo J L Bernardes
Maleimides remain the reagents of choice for the preparation of therapeutic and imaging protein conjugates despite the known instability of the resulting products that undergo thiol-exchange reactions in vivo. Here we present the rational design of carbonylacrylic reagents for chemoselective cysteine bioconjugation. These reagents undergo rapid thiol Michael-addition under biocompatible conditions in stoichiometric amounts. When using carbonylacrylic reagents equipped with PEG or fluorophore moieties, this method enables access to protein and antibody conjugates precisely modified at pre-determined sites...
October 26, 2016: Nature Communications
https://www.readbyqxmd.com/read/27761292/pediatric-fulminant-leptospirosis-complicated-by-pericardial-tamponade-macrophage-activation-syndrome-and-sclerosing-cholangitis
#12
Osman Yeşilbaş, Hasan Serdar Kıhtır, Hamdi Murat Yıldırım, Nevin Hatipoğlu, Esra Şevketoğlu
BACKGROUND: Leptospirosis is a zoonotic infectious disease caused by pathogenic spirochetes of the genus Leptospira. Although it is usually asymptomatic and self-limited, severe potentially fatal illness accompanied by multi-organ failure may occur. CASE REPORT: Here we report an unusual case of severe leptospirosis successfully treated with continuous venovenous hemofiltration (CVVHF) and therapeutic plasma exchange (TPE). The patient presented with pericardial tamponade, renal failure and macrophage activation syndrome, and later suffered prolonged jaundice and sclerosing cholangitis during hospitalization in the pediatric intensive care unit (PICU)...
September 2016: Balkan Medical Journal
https://www.readbyqxmd.com/read/27753987/sy-10-1-renal-glucose-handling-and-sglt2
#13
Resham Poudel
The kidneys maintain glucose homeostasis through its utilization, gluconeogenesis, and reabsorption. Glucose is freely filtered and reabsorbed in order to retain energy essential between meals. The amount of glucose reabsorbed by the kidneys is equivalent to the amount entering the filtration system. With a daily glomerular filtration rate of 180 L, approximately 180 g (180 L/day × 100 mg/dL) of glucose must be reabsorbed each day to maintain an average fasting plasma glucose concentration of 5.6 mmol/L (100 mg/dL)...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27751982/therapeutic-plasma-exchange-ameliorates-incompatible-crossmatchs
#14
Mehmet Özen, Sinan Erkul, Gülen Sezer, Alptekin Erkul, Özlem Genç, Engin Akgül, Ahmet Hakan Vural
No abstract text is available yet for this article.
October 18, 2016: Turkish Journal of Haematology: Official Journal of Turkish Society of Haematology
https://www.readbyqxmd.com/read/27743708/therapeutic-plasma-exchange-in-primary-hemophagocytic-lymphohistiocytosis-reports-of-two-cases-and-a-review-of-the-literature
#15
Mehmet Bosnak, Seher Erdogan, E Habibe Aktekin, Ali Bay
We report two children who were diagnosed as having primary hemophagocytic syndrome and who successfully underwent therapeutic plasma exchange (TPE). The first patient was a 6-month-old girl diagnosed with HLH who was admitted to the pediatric intensive care unit. The patient's clinical condition worsened on the 9th day of the HLH-2004 treatment protocol. Her ferritin level was found 50.000 ng/mL, and TPE was performed for 9 sessions, after which her clinical condition and laboratory findings improved. The patient is still on the HLH-2004 protocol and waits for a suitable stem cell transplantation donor...
September 28, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/27721782/role-of-therapeutic-plasma-exchange-in-treatment-of-tumefactive-multiple-sclerosis-associated-low-cd4-and-cd8-levels
#16
Kristen Lew, Nishith Mewada, Sahana Ramanujam, Bahareh Hassanzadeh, John E Donahue, Leema Reddy Peddareddygari, Robert Moser, Charles Kososky, Raji P Grewal
We report a 35-year-old healthy male who developed central nervous system inflammatory demyelinating disease consistent with tumefactive multiple sclerosis. About 2 weeks after onset of symptoms and prior to initiation of therapy, the patient had lymphopenia and low CD4 and CD8 levels. His lymphocyte count was 400 cells/µl (850-3,900 cells/µl), CD4 was 193 cells/µl (490-1,740 cells/µl) and CD8 was 103 cells/µl (180-1,170 cells/µl). He was treated with intravenous methylprednisolone followed by therapeutic plasma exchange, the levels of CD4 and CD8 normalized, and ultimately, he recovered completely...
May 2016: Case Reports in Neurology
https://www.readbyqxmd.com/read/27719676/nomenclature-for-renal-replacement-therapy-and-blood-purification-techniques-in-critically-ill-patients-practical-applications
#17
Gianluca Villa, Mauro Neri, Rinaldo Bellomo, Jorge Cerda, A Raffaele De Gaudio, Silvia De Rosa, Francesco Garzotto, Patrick M Honore, John Kellum, Anna Lorenzin, Didier Payen, Zaccaria Ricci, Sara Samoni, Jean-Louis Vincent, Julia Wendon, Marta Zaccaria, Claudio Ronco
This article reports the conclusions of the second part of a consensus expert conference on the nomenclature of renal replacement therapy (RRT) techniques currently utilized to manage acute kidney injury and other organ dysfunction syndromes in critically ill patients. A multidisciplinary approach was taken to achieve harmonization of definitions, components, techniques, and operations of the extracorporeal therapies. The article describes the RRT techniques in detail with the relevant technology, procedures, and phases of treatment and key aspects of volume management/fluid balance in critically ill patients...
October 10, 2016: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/27717013/increased-troponin-i-is-associated-with-fatal-outcome-in-acquired-thrombotic-thrombocytopenic-purpura
#18
Jason Brazelton, Robert A Oster, Brandi McCleskey, Jessica Fuller, Jill Adamski, Marisa B Marques
Thrombotic thrombocytopenic purpura (TTP) has >90% mortality without therapeutic plasma exchange (TPE). Despite TPE, approximately 10% of patients still die, presumably from cardiac ischemia. We sought clinical or laboratory parameters associated with death by reviewing the records of all patients hospitalized with acquired TTP in our institution for 10 years, and collect demographics and results for hemoglobin, platelet count, creatinine, lactate dehydrogenase, transaminases, total bilirubin, creatinine kinase (CK), CK-MB, and troponin I...
September 26, 2016: Journal of Clinical Apheresis
https://www.readbyqxmd.com/read/27709659/human-immunodeficiency-virus-associated-thrombotic-thrombocytopenic-purpura-a-clinical-conundrum
#19
Nathaniel C Warner, Leroy B Vaughan, Richard P Wenzel
HIV complicates the diagnostic and therapeutic approaches to idiopathic thrombotic thrombocytopenic purpura (TTP), prompting debate in the literature regarding the benefit of plasma exchange versus simple plasma infusion. Herein we present a case of HIV-TTP, initially treated conservatively with plasma infusion but because of progressive neurologic decline, required urgent plasma exchange for resolution of hematologic derangements and neurologic sequelae. Based on the available literature, there appears to be a spectrum of HIV-associated TTP disorders...
October 6, 2016: Journal of Clinical Apheresis
https://www.readbyqxmd.com/read/27704559/a-randomized-crossover-study-comparing-membrane-and-centrifugal-therapeutic-plasma-exchange-procedures
#20
Petar Kes, Michiel Etienne Janssens, Nikolina Bašić-Jukić, Milića Kljak
BACKGROUND: Therapeutic plasma exchange (TPE) can be performed either on a membrane-based system (mTPE) or on a device that separates blood components by centrifugation (cTPE). The number of studies in this field is limited. This randomized study is the first that offers data on the membrane-based Diapact device (B. Braun Medical, Inc.) for TPE procedures and compares it to the centrifuge-based Spectra Optia (Terumo BCT, Inc.). STUDY DESIGN AND METHODS: Twenty-seven patients were enrolled in this randomized prospective head-to-head study comparing the mTPE and cTPE systems...
October 5, 2016: Transfusion
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