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Plasma and exchange

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https://www.readbyqxmd.com/read/29331508/compartmentalized-crosstalk-of-cftr-and-tmem16a-ano1-through-epac1-and-adcy1
#1
Joana Lérias, Madalena Pinto, Roberta Benedetto, Rainer Schreiber, Margarida Amaral, Massimo Aureli, Karl Kunzelmann
Airway epithelial cells express both Ca2+ activated TMEM16A/ANO1 and cAMP activated CFTR anion channels. Previous work suggested a significant crosstalk of intracellular Ca2+ and cAMP signaling pathways, leading to activation of both chloride channels. We demonstrate that in airway epithelial cells, stimulation of purinergic or muscarinic G-protein coupled receptors (GPCRs) activates TMEM16A and CFTR. Additional expression of Gq/11 and phospholipase C coupled GPCRs strongly enhanced the crosstalk between Ca2+- and cAMP-dependent signaling...
January 10, 2018: Cellular Signalling
https://www.readbyqxmd.com/read/29321928/lung-cancer-development-in-the-patient-with-granulomatosis-with-polyangiitis-during-long-term-treatment-with-cyclophosphamide-first-documented-case
#2
Midori Toriyama, Etsuko Tagaya, Tomoko Yamamoto, Mitsuko Kondo, Yoji Nagashima, Jun Tamaoki
A 65-year-old man was diagnosed with granulomatosis with polyangiitis (GPA) at the age of 47, when cytoplasmic anti-neutrophil cytoplasmic antibody (C-ANCA) serology was positive, and he had multiple nodular shadows in both lungs. He had been treated with prednisolone, cyclophosphamide (CPA) and plasma exchange. At the age of 64, a nodular shadow was newly detected in the right lower lung field and serum tumour marker increased. Subsequent positron emission tomography/computed tomography scan demonstrated accumulations of fluorodexyglucose (FDG) in the same area, mediastinum lymph nodes, thoracic wall, right iliac bone, and right retroperitoneum...
February 2018: Respirology Case Reports
https://www.readbyqxmd.com/read/29321925/lupus-pneumonitis-presenting-with-high-titre-of-anti-ro-antibody
#3
Mei-Chuan Chen, Yueh-Lin Wu, Kai-Ling Lee, Kevin S Lai, Chi-Li Chung
Lupus pneumonitis carries high mortality and is a rare manifestation of systemic lupus erythematosus (SLE). However, it is difficult to diagnose and is often mistaken as pneumonia, alveolar haemorrhage, or organizing pneumonia. Previous studies demonstrated that serum anti-Ro antibodies are elevated more frequently in SLE patients with pneumonitis than in those without. We report a 21-year-old female who was newly diagnosed as having SLE with nephritis and who suddenly developed right lung opacity and rapidly progressed to severe hypoxaemia despite the use of broad-spectrum antibiotics...
January 2018: Respirology Case Reports
https://www.readbyqxmd.com/read/29321467/importance-of-regular-and-maintenance-therapy-adherence-in-neuromyelitis-optica-nmo-lessons-from-a-repeating-relapse-case
#4
Jing Miao, Doreen E Aboagye, Boris Chulpayev, Lin Liu, Gary Ishkanian, Bangaruraju Kolanuvada, Dariush Alaie, Richard L Petrillo
BACKGROUND Neuromyelitis optica (NMO) is a rare demyelinating disease of the central nervous system; NMO predominantly affects the spinal cord and optic nerves. The diagnosis is based on history, clinical presentation, seropositive NMO-IgG antibody, and notably, exclusion of other diseases. Despite the absence of definitive therapeutic strategies for NMO, methylprednisolone pulse therapy and plasma exchange are used for acute phase treatment, while immunosuppressive agent(s) are recommended to prevent relapses and improve prognosis...
January 11, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29321424/a-case-of-anti-musk-antibody-positive-myasthenia-gravis-successfully-treated-with-outpatient-periodic-weekly-blood-purification-therapy
#5
Kentaro Deguchi, Kosuke Matsuzono, Yumiko Nakano, Syoichiro Kono, Kota Sato, Shoko Deguchi, Katsuyuki Tanabe, Nozomi Hishikawa, Yasuyuki Ota, Toru Yamashita, Kiyoe Ohta, Masakatsu Motomura, Koji Abe
A 37-year-old man with anti-muscle-specific tyrosine kinase (MuSK) antibody-positive myasthenia gravis (MG) presented with subacute progressive dysphagia and muscle weakness of the neck and bilateral upper extremities. Conventional immune-suppressive treatments and high-dose intravenous immunoglobulin were ineffective. He then displayed repeated exacerbations and remissions over the course of two years, despite two to four sessions of plasma exchange (PE) every two months. The patient was successfully treated with outpatient periodic weekly blood purification therapy with alternative PE and double-filtration plasmapheresis using an internal shunt...
January 11, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29318981/magnesium-homeostasis-in-cattle-absorption-and-excretion
#6
Holger Martens, Sabine Leonhard-Marek, Monika Röntgen, Friederike Stumpff
Magnesium (Mg2+) is an essential mineral without known specific regulatory mechanisms. In ruminants, plasma Mg2+ concentration depends primarily on the balance between Mg2+ absorption and Mg2+ excretion. The primary site of Mg2+ absorption is the rumen, where Mg2+ is apically absorbed by both potential-dependent and potential-independent uptake mechanisms, reflecting involvement of ion channels and electroneutral transporters, respectively. Transport is energised in a secondary active manner by a basolateral Na+/Mg2+ exchanger...
January 10, 2018: Nutrition Research Reviews
https://www.readbyqxmd.com/read/29317197/structural-determinants-of-phorbol-ester-binding-activity-of-the-c1a-and-c1b-domains-of-protein-kinase-c-theta
#7
Agnes Czikora, Satyabrata Pany, Youngki You, Amandeep S Saini, Nancy E Lewin, Gary A Mitchell, Adelle Abramovitz, Noemi Kedei, Peter M Blumberg, Joydip Das
The PKC isozymes represent the most prominent family of signaling proteins mediating response to the ubiquitous second messenger diacylglycerol. Among them, PKCθ is critically involved in T-cell activation. Whereas all the other conventional and novel PKC isoforms have twin C1 domains with potent binding activity for phorbol esters, in PKCθ only the C1b domain possesses potent binding activity, with little or no activity reported for the C1a domain. In order to better understand the structural basis accounting for the very weak ligand binding of the PKCθ C1a domain, we assessed the effect on ligand binding of twelve amino acid residues which differed between the C1a and C1b domains of PKCθ...
January 6, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29309797/treatment-of-pandas-and-pans-a-systematic-review
#8
REVIEW
Sofia Sigra, Eva Hesselmark, Susanne Bejerot
Pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections (PANDAS) are a subtype of acute-onset obsessive-compulsive disorder (OCD) thought to be caused by an autoimmune response to group A streptococcal infection. Based on this proposed pathophysiology, alternative treatments for acute-onset OCD have been introduced, including antibiotics and immunomodulatory interventions. However, the literature on treatment of PANDAS is diverse, and clinical consensus regarding optimal treatment strategy is lacking...
January 5, 2018: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29308263/synthesis-and-hydrogenation-application-of-pt-pd-bimetallic-nanocatalysts-stabilized-by-macrocycle-modified-dendrimer
#9
Zhijun Jin, Haiyan Xiao, Wei Zhou, Dongqiao Zhang, Xiaohong Peng
Different generations of poly(propylene imine) (G n -PPI) terminated with N-containing 15-membered triolefinic macrocycle (G n M) (n = 2, 3, 4, 5) were prepared. The bimetallic nanoparticle catalysts G n M-(Pt x /Pd10-x ) (x = 0, 3, 5, 7, 10) were prepared by the synchronous ligand-exchange reaction between G n M and the complexes of Pt(PPh3)4 and Pd(PPh3)4. The structure and catalytic properties of G n M-(Pt x /Pd10-x ) were characterized via Fourier transform infrared spectroscopy, 1H nuclear magnetic resonance spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy, energy-dispersive spectroscopy and inductively coupled plasma atomic emission spectroscopy...
December 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29308211/elevated-homocysteine-and-n-methyl-d-aspartate-receptor-antibodies-as-a-cause-of-behavioural-and-cognitive-decline-in-22q11-2-deletion-syndrome
#10
Simon Vann Jones, Subimal Banerjee, A David Smith, Helga Refsum, Belinda Lennox
A 19-year-old male with 22q11.2 deletion syndrome presented with a 4-year history of cognitive decline and symptoms suggestive of atypical psychosis. Potential for elevated homocysteine and NMDA-receptor antibodies in the pathogenesis of his symptoms was investigated. He had elevated blood homocysteine level (18.7 μmol/l), low-normal vitamin B12 and folate levels and was positive for NMDA-receptor antibodies. Treatment with daily folinic acid (0.8 mg) and vitamin B12 (1 mg) led to dramatic improvement in his cognitive and behavioural presentation...
December 2017: Oxford Medical Case Reports
https://www.readbyqxmd.com/read/29307968/plasmapheresis-a-retrospective-audit-of-procedures-from-a-tertiary-care-center-in-southern-india
#11
O T Ahammed Nizar, Pratheeksha Rai, Shobhana Nayak Rao, M Pradeep Shenoy
Introduction: The term plasmapheresis/plasma exchange refers to the removal of the plasma component of blood and its replacement with various fluids. Plasma Exchange (PE) has been used to treat a variety of conditions that are associated with an aberrant immune response. We undertook this retrospective study aiming to look at plasmapheresis procedures conducted in the nephrology department over a fixed time period. Materials and Methods: Retrospective analysis of PE procedures from January 2013 to October 2016 was conducted in the nephrology and Intensive Care Unit of a tertiary care teaching hospital...
December 2017: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/29306308/use-of-plasma-exchange-as-therapeutic-tool-in-clinical-practice
#12
Isabel Laura Campano-Pérez, Rosario Olivera-Fernández, Lara González-Freire, Carlos Crespo-Diz
OBJECTIVE: To descrive the use of therapeutic plasma exchange in several pathologies and its adjustment to international reference guides. METHOD: Observational, descriptive, retrospective study, of all the patients that  received plasmapheresis between January 2014-December 2015. We analized  the appropriate indication according to the bibliography consulted, and the  therapeutic outcome. Indication, replaced volume of plasma, number of sessions  and periodicity were established by the Hematology Service depending  on the disease and its clinical course...
January 1, 2018: Farmacia Hospitalaria
https://www.readbyqxmd.com/read/29305240/a-pilot-study-of-a-non-invasive-oral-nitrate-stable-isotopic-method-suggests-that-arginine-and-citrulline-supplementation-increases-whole-body-no-production-in-tanzanian-children-with-sickle-cell-disease
#13
Alphonce I Marealle, Mario Siervo, Sara Wassel, Les Bluck, Andrew M Prentice, Omary Minzi, Philip Sasi, Appolinary Kamuhabwa, Deogratias Soka, Julie Makani, Sharon E Cox
BACKGROUND: Low bioavailability of nitric oxide (NO) is implicated in the pathophysiology of sickle cell disease (SCD). We designed a nested pilot study to be conducted within a clinical trial testing the effects of a daily ready-to-use supplementary food (RUSF) fortified with arginine (Arg) and citrulline (Citr) vs. non-fortified RUSF in children with SCD. The pilot study evaluated 1) the feasibility of a non-invasive stable isotope method to measure whole-body NO production and 2) whether Arg+Citr supplementation was associated with increased whole-body NO production...
January 2, 2018: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/29304523/insights-into-3d-structure-of-adamts13-a-stepping-stone-towards-novel-therapeutic-treatment-of-thrombotic-thrombocytopenic-purpura
#14
Bogac Ercig, Kanin Wichapong, Chris P M Reutelingsperger, Karen Vanhoorelbeke, Jan Voorberg, Gerry A F Nicolaes
ADAMTS13 (A D: isintegrin A: nd M: etalloprotease with a T: hromboS: pondin type-1 motif, member 13: ) and von Willebrand factor (VWF) can be considered as scale weights which control platelet adhesion during primary haemostasis. In a very uncommon condition designated thrombotic thrombocytopenic purpura (TTP), functional absence of ADAMTS13 tips the balance toward VWF-mediated platelet adhesion in the microcirculation. TTP is associated with a high mortality and arises from either a congenital or acquired autoimmune deficiency of the plasma enzyme ADAMTS13...
January 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29302816/geoaccumulation-assessment-of-heavy-metal-pollution-in-ikwo-soils-eastern-nigeria
#15
Andrew A Tyopine, Titilope J Jayeoye, Chukwuma O B Okoye
An imbalance in the environment's composition leads to significant effect on human activities such as farming. Of importance are heavy metals which are introduced anthropogenically or naturally. This calls for environmental monitoring and subsequent remediation if needed. An environmental monitoring exercise was conducted on Ikwo soils of Ebonyi State, eastern Nigeria with the aim of determining concentration levels for possible remediation. A total of 18 soil composite samples taken at 0-50 cm below soil surface from fallowed and cultivated soils not fertilized were subjected to heavy metal analyses and fertility indices like: organic matter (OM), cation exchange capacity (CEC), % total nitrogen (%TN), organic carbon (OC), and salinity...
January 4, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29301606/epac2a-knockout-mice-are-resistant-to-dexamethasone-induced-skeletal-muscle-atrophy-and-short-term-cold-stress
#16
Seung-Eun Song, Su-Kyung Shin, So-Young Park, Il-Seon Hwang, Seung-Soon Im, Jae-Hoon Bae, Myung-Sook Choi, Dae-Kyu Song
Exchange protein directly activated by cAMP (Epac) 2a-knockout (KO) mice exhibit accelerated diet-induced obesity and are resistant to leptin-mediated adipostatic signaling from the hypothalamus to adipose tissue, with sustained food intake. However, the impact of Epac2a deficiency on hypothalamic regulation of sympathetic nervous activity (SNA) has not been elucidated. This study was performed to elucidate the response of Epac2a-KO mice to dexamethasone-induced muscle atrophy and acute cold stress. Compared to age-matched wild-type mice, Epac2a-KO mice showed higher energy expenditures and expression of myogenin and uncoupling protein-1 in skeletal muscle (SM) and brown adipose tissue (BAT), respectively...
January 5, 2018: BMB Reports
https://www.readbyqxmd.com/read/29298486/redox-controlled-fluorescent-nanoswitch-based-on-reversible-disulfide-and-its-application-in-butyrylcholinesterase-activity-assay
#17
Guilin Chen, Hui Feng, Xiaogan Jiang, Jing Xu, Saifei Pan, Zhaosheng Qian
Butyrylcholinesterase (BChE) mainly contributing to plasma cholinesterase activity is an important indicator for routinely diagnosing liver function and organophosphorus poisoning in clinical diagnosis, but its current assays are scarce and frequently suffer from some significant interference and instability. Herein, we report a redox-controlled fluorescence nanoswtich based on reversible disulfide bonds, and further develop a fluorometric assay of BChE via thiol-triggered disaggregation-induced emission. Thiol-functionalized carbon quantum dots (thiol-CQDs) with intense fluorescence is found to be responsive to hydrogen peroxide, and their redox reaction transforms thiol-CQDs to nonfluorescent thiol-CQDs assembly...
January 4, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29296863/management-of-thrombotic-thrombocytopenic-purpura-without-plasma-exchange-the-jehovah-s-witness-experience
#18
James N George, Steven A Sandler, Joanna Stankiewicz
TTP in Jehovah's Witness patients has been managed successfully without PEX.This experience, plus new TTP treatments, may make it possible for patients who are not Jehovah's Witnesses to avoid PEX in the future.
November 14, 2017: Blood Advances
https://www.readbyqxmd.com/read/29296854/cyclosporine-or-steroids-as-an-adjunct-to-plasma-exchange-in-the-treatment-of-immune-mediated-thrombotic-thrombocytopenic-purpura
#19
Spero R Cataland, Peter J Kourlas, Shangbin Yang, Susan Geyer, Leslie Witkoff, Haiwa Wu, Camila Masias, James N George, Haifeng M Wu
Although steroids are routinely used as an adjunct to plasma exchange (PEX) therapy in the treatment of immune-mediated thrombotic thrombocytopenic purpura (iTTP), limited data regarding their efficacy or effect on ADAMTS13 biomarkers are available. We report the results of a prospective, randomized study that compared the effectiveness of prednisone or cyclosporine (CSA) as adjuncts to PEX in the treatment of iTTP. A total of 26 of the planned 72 subjects were enrolled and treated from November 2007 until February 2014 before the study was halted after a planned interim analysis...
October 24, 2017: Blood Advances
https://www.readbyqxmd.com/read/29296701/thrombotic-thrombocytopenic-purpura-diagnostic-criteria-clinical-features-and-long-term-outcomes-from-1995-through-2015
#20
Evaren E Page, Johanna A Kremer Hovinga, Deirdra R Terrell, Sara K Vesely, James N George
Our objective was to describe new observations from the Oklahoma Thrombotic Thrombocytopenic Purpura (TTP) Registry experience (November 1995 through December 2015) on the diagnosis of TTP along with patients' clinical features and their outcomes. Among 363 patients with an initial episode of clinically suspected TTP, the diagnosis of TTP was supported by both ADAMTS13 activity <10% and clinical features in 78 patients (21%). ADAMTS13 activity was measured in all 363 patients by 2 methods: fluorescence resonance energy transfer (FRET) and immunoblotting (IB)...
April 11, 2017: Blood Advances
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