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https://www.readbyqxmd.com/read/29150961/modulation-of-igg1-immunoeffector-function-by-glycoengineering-of-the-gdp-fucose-biosynthesis-pathway
#1
Ronan M Kelly, Ronald L Kowle, Zhirui Lian, Beth A Strifler, Derrick R Witcher, Bhavin S Parekh, Tongtong Wang, Christopher C Frye
Cross-linking of the Fcγ receptors expressed on the surface of hematopoietic cells by IgG immune complexes triggers the activation of key immune effector mechanisms, including antibody-dependent cell mediated cytotoxicity (ADCC). A conserved N-glycan positioned at the N-terminal region of the IgG CH 2 domain is critical in maintaining the quaternary structure of the molecule for Fcγ receptor engagement. The removal of a single core fucose residue from the N-glycan results in a considerable increase in affinity for FcγRIIIa leading to an enhanced receptor-mediated immunoeffector function...
November 18, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29150609/atomic-resolution-snapshot-of-leishmania-ribosome-inhibition-by-the-aminoglycoside-paromomycin
#2
Moran Shalev-Benami, Yan Zhang, Haim Rozenberg, Yuko Nobe, Masato Taoka, Donna Matzov, Ella Zimmerman, Anat Bashan, Toshiaki Isobe, Charles L Jaffe, Ada Yonath, Georgios Skiniotis
Leishmania is a single-celled eukaryotic parasite afflicting millions of humans worldwide, with current therapies limited to a poor selection of drugs that mostly target elements in the parasite's cell envelope. Here we determined the atomic resolution electron cryo-microscopy (cryo-EM) structure of the Leishmania ribosome in complex with paromomycin (PAR), a highly potent compound recently approved for treatment of the fatal visceral leishmaniasis (VL). The structure reveals the mechanism by which the drug induces its deleterious effects on the parasite...
November 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/29150562/the-role-of-mhc-e-in-t-cell-immunity-is-conserved-among-humans-rhesus-macaques-and-cynomolgus-macaques
#3
Helen L Wu, Roger W Wiseman, Colette M Hughes, Gabriela M Webb, Shaheed A Abdulhaqq, Benjamin N Bimber, Katherine B Hammond, Jason S Reed, Lina Gao, Benjamin J Burwitz, Justin M Greene, Fidel Ferrer, Alfred W Legasse, Michael K Axthelm, Byung S Park, Simon Brackenridge, Nicholas J Maness, Andrew J McMichael, Louis J Picker, David H O'Connor, Scott G Hansen, Jonah B Sacha
MHC-E is a highly conserved nonclassical MHC class Ib molecule that predominantly binds and presents MHC class Ia leader sequence-derived peptides for NK cell regulation. However, MHC-E also binds pathogen-derived peptide Ags for presentation to CD8(+) T cells. Given this role in adaptive immunity and its highly monomorphic nature in the human population, HLA-E is an attractive target for novel vaccine and immunotherapeutic modalities. Development of HLA-E-targeted therapies will require a physiologically relevant animal model that recapitulates HLA-E-restricted T cell biology...
November 17, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29149414/role-of-tctp-for-cellular-differentiation-and-cancer-therapy
#4
Ean-Jeong Seo, Nicolas Fischer, Thomas Efferth
The translationally controlled tumor protein (TCTP) is a highly conserved protein that is regulated due to a high number of extracellular stimuli. TCTP has an important role for cell cycle and normal development. On the other side, tumor reversion and malignant transformation have been associated with TCTP. TCTP has been found among the 12 genes that are differentially expressed during mouse oocyte maturation, and an overexpression of this gene was reported in a wide variety of different cancer types. Its antiapoptotic effect is indicated by the interaction with several proapoptotic proteins of the Bcl-2 family and the p53 tumor suppressor protein...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149077/rna-virus-evolution-via-a-quasispecies-based-model-reveals-a-drug-target-with-a-high-barrier-to-resistance
#5
Richard J Bingham, Eric C Dykeman, Reidun Twarock
The rapid occurrence of therapy-resistant mutant strains provides a challenge for anti-viral therapy. An ideal drug target would be a highly conserved molecular feature in the viral life cycle, such as the packaging signals in the genomes of RNA viruses that encode an instruction manual for their efficient assembly. The ubiquity of this assembly code in RNA viruses, including major human pathogens, suggests that it confers selective advantages. However, their impact on viral evolution cannot be assessed in current models of viral infection that lack molecular details of virus assembly...
November 17, 2017: Viruses
https://www.readbyqxmd.com/read/29148024/blue-planet-dialysis-novel-water-sparing-strategies-for-reducing-dialysate-flow
#6
Alejandra Molano-Triviño, Benjamin Wancjer, Mauro M Neri, Akash N Karopadi, Mitchell Rosner, Claudio Ronco
INTRODUCTION: Hemodialysis (HD) is an expensive therapy in economic and in ecological terms, owing to a high carbon footprint and significant consumption of natural sources, especially water. Our aim was to review strategies to diminish waste of water in maintenance dialysis, exploring previously described water reuse trends and less known strategies for reducing the dialysate flow. METHODS: We conducted a systematic review of water-sparing strategies, including the reuse of reverse osmosis rejected water and the reduction of dialysate flux...
November 8, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/29147758/a-systematic-review-assessing-non-pharmacological-conservative-treatment-studies-for-people-with-non-inflammatory-multi-joint-pain-clinical-outcomes-and-research-design-considerations
#7
REVIEW
C Comer, T O Smith, B Drew, R Raja, S R Kingsbury, Philip G Conaghan
To systematically review the evidence to determine the clinical outcomes and the important methodological quality features of interventional studies on adults with non-inflammatory multi-joint pain (MJP). Systematic search of published and unpublished literature using the databases: AMED, CINAHL, MEDLINE, EMBASE, psycINFO, SPORTDiscus, PEDro, OpenGrey, the EU Clinical Trials Register, World Health Organization International Clinical Trial Registry Platform, ClinicalTrials.gov and the ISRCTN registry (search: inception to 19th October 2017)...
November 16, 2017: Rheumatology International
https://www.readbyqxmd.com/read/29147569/growth-hormone-insensitivity-mexican-case-report
#8
I Castilla-Cortazar, J R De Ita, G A Aguirre, M García-Magariño, I Martín-Estal, V J Lara-Diaz, M I Elizondo
Herein, we present a 14-year-old patient with short stature (134 cm) referred from Paediatrics to our department for complementary evaluation since growth hormone (GH) treatment failed to show any improvement. He was born premature and small for gestational age. Genital examination classified the patient as Tanner I-II with small penis and testicular size for his age. Biochemical analyses revealed normal GH levels with low serum insulin-like growth factor-1 (IGF-1). Molecular diagnosis confirmed several mutations in IGF1R and IGFALS, and so he was diagnosed with Laron Syndrome or GH insensibility and treated with IGF-1 substitutive therapy...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/29146910/an-unexpected-protein-interaction-promotes-drug-resistance-in-leukemia
#9
Aaron Pitre, Yubin Ge, Wenwei Lin, Yao Wang, Yu Fukuda, Jamshid Temirov, Aaron H Phillips, Jennifer L Peters, Yiping Fan, Jing Ma, Amanda Nourse, Chandrima Sinha, Hai Lin, Richard Kriwacki, James R Downing, Tanja A Gruber, Victoria E Centonze, Anjaparavanda P Naren, Taosheng Chen, John D Schuetz
The overall survival of patients with acute myeloid leukemia (AML) is poor and identification of new disease-related therapeutic targets remains a major goal for this disease. Here we show that expression of MPP1, a PDZ-domain-containing protein, highly correlated with ABCC4 in AML, is associated with worse overall survival in AML. Murine hematopoietic progenitor cells overexpressing MPP1 acquired the ability to serially replate in methylcellulose culture, a property crucially dependent upon ABCC4. The highly conserved PDZ-binding motif of ABCC4 is required for ABCC4 and MPP1 to form a protein complex, which increased ABCC4 membrane localization and retention, to enhance drug resistance...
November 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/29145276/endovascular-stenting-of-spontaneous-isolated-dissection-of-the-superior-mesenteric-artery-a-case-report-and-literature-review
#10
Dong-Na Gao, Qing-Hui Qi, Ping Gong
RATIONALE: Spontaneous isolated dissection of the superior mesenteric artery (SID-SMA) is a rare arterial disease that is difficult to differentiate from other diseases because of lack of specific clinical manifestation and for which there is no available optimal management strategy. PATIENT CONCERNS: A 58-year-old male patient visited our emergency room with sudden onset of moderate-severe epigastric abdominal pain of uncertain cause. DIAGNOSES: Computed tomography scanning showed a characteristic "double lumen sign" of the superior mesenteric artery, and further computed tomography angiography findings revealed a dissected segment of the superior mesenteric artery...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29145275/asymptomatic-syringomyelia-accompanied-with-metastatic-cerebellar-and-spinal-intramedullary-lymphoma-a-case-report
#11
Jia-Jia Zhou, Jin-Feng Xu, Xu-Ning Zheng, Guo-Ping Peng
RATIONALE: Asympotamic syringomyelia accompanied with metastatic cerebellar and thoracic spinal intramedullary lymphoma is rare in clinical practice. If the intramedullary lymphoma is large enough, the patient will rapidly develop neurologic signs of spinal injury. The prognosis of this type of complication is always bad. PATIENT CONCERNS: Rapid and correct diagnosis and treatment is important for metastatic extranodal lymphoma with B cell of origin. DIAGNOSES: Syringomyelia accompanied with metastatic cerebellar and thoracic spinal intramedullary lymphoma...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29143477/gastric-venous-congestion-and-bleeding-in-association-with-total-pancreatectomy
#12
Akimasa Nakao, Suguru Yamada, Tsutomu Fujii, Haruyoshi Tanaka, Kenji Oshima, Yukiko Oshima, Kiyotsugu Iede, Hironobu Kobayashi, Yasunori Kimura, Yasuhiro Kodera
BACKGROUND: Gastric venous congestion and bleeding in association with total pancreatectomy (TP) were evaluated. METHODS: Thirty-eight patients of TP were retrospectively analyzed. TP was classified as TP with distal gastrectomy (TPDG), pylorus-preserving TP (PPTP), subtotal stomach-preserving TP (SSPTP), and TP with segmental duodenectomy (TPSD). RESULTS: Portal vein or superior mesenteric vein resection and reconstruction was performed in 24 patients (62...
November 16, 2017: Journal of Hepato-biliary-pancreatic Sciences
https://www.readbyqxmd.com/read/29142496/precipitous-resolution-of-type-a-intramural-hematoma-with-medical-management-in-a-patient-with-metastatic-stage-4-renal-cell-carcinoma
#13
Camilo A Velasquez, Syed Usman Bin Mahmood, Mohammad A Zafar, Adam J Brownstein, Ayman Saeyeldin, Bulat A Ziganshin, John A Elefteriades
Intramural hematoma (IMH) is a variant form of aortic dissection characterized by involvement of the aortic media without the presence of an overt intimal flap. Surgical extirpation is the standard of care for type-A IMH in the Western world. However, a conservative approach with anti-impulse therapy has been advocated especially in Japan as a viable alternative. Here, we report a case of an elderly male patient with a history of metastatic stage 4 renal cell carcinoma who was treated with anti-impulse therapy for an acute type-A IMH...
December 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/29141779/five-field-imrt-class-solutions-and-dosimetric-planning-guidelines-for-implementing-accelerated-partial-breast-irradiation
#14
Sarah Quirk, Petra Grendarova, Michael Roumeliotis
PURPOSE: A comprehensive set of planning guidelines was developed to aid in achieving reproducible dosimetric results for external beam accelerated partial breast irradiation (APBI). The methodology for the development of class solutions for dosimetric planning of the APBI technique, including dose constraint recommendations, is presented for target coverage and conformity as well as normal tissues. METHODS AND MATERIALS: A conservative patient setup was simulated on a linear accelerator, and a comprehensive arrangement of gantry and couch angles was measured for clearance...
September 28, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/29141620/treatment-of-genu-valgum-in-children-by-means-of-temporary-hemiepiphysiodesis-using-eight-plates-short-term-findings
#15
Dirk Zajonz, Eckehard Schumann, Magdalena Wojan, Fabian B Kübler, Christoph Josten, Ulf Bühligen, Christoph E Heyde
BACKGROUND: Idiopathic genu valgum is a frequently diagnosed growth disorder in adolescence. Whenever the possibilities of conservative therapy have been exhausted, leg straightening by means of hemiepiphysiodesis has become the standard form of treatment. Because of their flexible screw-plate connection, eight-Plates have been reported in the literature to lead to lower complications regarding implant loosening and fracture compared to other implants. The aim of this retrospective survey was to analyse our own patient population who were treated for genu valgum by means of temporary hemiepiphysiodesis near the knee using eight-Plates to modulate growth...
November 15, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29139613/nipple-sparing-mastectomy-as-treatment-for-patients-with-ductal-carcinoma-in%C3%A2-situ-a-10-year-follow-up-study
#16
Víctor Lago, Vincenzo Maisto, Julia Gimenez-Climent, Jose Vila, Carlos Vazquez, Rafael Estevan
The objective was to determine the 10-year oncological safety of nipple-sparing mastectomy (NSM) in patients diagnosed with ductal carcinoma in situ (DCIS). The use of NSM preserves the nipple-areola complex (NAC). As residual fibroglandular breast tissue can remain behind the spared NAC, its use for patient with breast cancer is controversial. The oncologic outcomes and complication rates after performing NSM compared to other techniques are still under debate and a concern when treating patients with breast cancer...
November 15, 2017: Breast Journal
https://www.readbyqxmd.com/read/29137240/mutational-re-modeling-of-di-aspartyl-intramembrane-proteases-uncoupling-physiologically-relevant-activities-from-those-associated-with-alzheimer-s-disease
#17
Anastasia P Grigorenko, Youri K Moliaka, Olga V Plotnikova, Alexander Smirnov, Vera A Nikishina, Andrey Y Goltsov, Fedor Gusev, Tatiana V Andreeva, Omar Nelson, Ilya Bezprozvanny, Evgeny I Rogaev
The intramembrane proteolytic activities of presenilins (PSEN1/PS1 and PSEN2/PS2) underlie production of β-amyloid, the key process in Alzheimer's disease (AD). Dysregulation of presenilin-mediated signaling is linked to cancers. Inhibition of the γ-cleavage activities of PSENs that produce Aβ, but not the ε-like cleavage activity that release physiologically essential transcription activators, is a potential approach for the development of rational therapies for AD. In order to identify whether different activities of PSEN1 can be dissociated, we designed multiple mutations in the evolutionary conserved sites of PSEN1...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29136618/hepcidin-in-iron-homeostasis-diagnostic-and-therapeutic-implications-in-type-2-diabetes-mellitus-patients
#18
Sintayehu Ambachew, Belete Biadgo
The prevalence of type 2 diabetes is increasing in epidemic proportions worldwide. Evidence suggests body iron overload is frequently linked and observed in patients with type 2 diabetes. Body iron metabolism is based on iron conservation and recycling by which only a part of the daily need is replaced by duodenal absorption. The principal liver-produced peptide called hepcidin plays a fundamental role in iron metabolism. It directly binds to ferroportin, the sole iron exporter, resulting in the internalization and degradation of ferroportin...
November 15, 2017: Acta Haematologica
https://www.readbyqxmd.com/read/29135277/somato-visceral-effects-in-the-treatment-of-dysmenorrhea-neuromuscular-manual-therapy-and-standard-pharmacological-treatment
#19
Giovanni Barassi, Rosa Grazia Bellomo, Annamaria Porreca, Piera Attilia Di Felice, Loris Prosperi, Raoul Saggini
OBJECTIVES: This study aims to verify whether neuromuscular therapy (NMT) or pharmacology therapy (PT) is more effective for reducing symptoms in women affected by primary dysmenorrhea and the effects associated with each treatment. DESIGN: A controlled, randomized, single-blind clinical trial within the framework of the chair of physical medicine and rehabilitation of the University "G. d'Annunzio" of Chieti-Pescara. The study was conducted on a sample of 60 women suffering from primary dysmenorrhea...
November 14, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/29135139/-laparoscopic-transperitoneal-adrenalectomy
#20
B G Guliev, B K Komyakov, D V Semenov
AIM: To analyze the results of laparoscopic adrenalectomy (LAE) in patients with adrenal gland tumors. MATERIALS AND METHODS: From 2011 to 2016, 24 patients (15 men, 9 women), mean age 49.6 +/- 8.2 years, underwent LAE. The right, left and bilateral LAE was performed in 12, 10 and 2 patients, respectively. Indications for surgery were mainly primary and metastatic adrenal tumors. The operations were performed using a transperitoneal 4-port approach. RESULTS: Twenty six LAE were successfully performed in 24 patients...
October 2017: Urologii︠a︡
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