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https://www.readbyqxmd.com/read/29888993/the-trans-golgi-sorting-and-the-exocytosis-of-xylogalacturonan-from-the-root-border-border-like-cell-are-conserved-among-monocot-and-dicot-plant-species
#1
Pengfei Wang, Byung-Ho Kang
Root border cells lie at the interface between the root cap and the soil, secreting mucilage containing polysaccharides and molecules influencing microbial growth around the root. Border cells are sloughed off from the root surface, and the detachment is associated with secretion of xylogalacturonan (XGA). Recently, we showed that in alfalfa XGA secretion is mediated by large vesicles arising from the trans-Golgi in root cap cells. These vesicles are detected in precursor cells of border cells, but their fusion with the plasma membrane is observed only in border cells...
June 11, 2018: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/29886912/repeat-surgical-interventions-following-definitive-instrumentation-and-fusion-for-idiopathic-scoliosis-25-year-update
#2
Megan Mignemi, Dong Tran, Brandon Ramo, B Stephens Richards
STUDY DESIGN: Single-institution, retrospective review of prospectively collected data on pediatric patients with adolescent idiopathic scoliosis (AIS) undergoing spinal fusion with a minimum two-year follow-up. OBJECTIVE: To determine the rate of reoperation in AIS patients undergoing spine fusion from 2008 to 2012. SUMMARY OF BACKGROUND DATA: Recent trends in the surgical treatment of AIS have included increased use of all-pedicle screw constructs, smaller implants, more posterior-only approaches, and improved correction techniques...
July 2018: Spine Deformity
https://www.readbyqxmd.com/read/29861060/interleukin-6-contributes-to-the-increase-in-fibroblast-growth-factor-23-expression-in-acute-and-chronic-kidney-disease
#3
Karina Durlacher-Betzer, Alia Hassan, Ronen Levi, Jonathan Axelrod, Justin Silver, Tally Naveh-Many
The high serum fibroblast growth factor 23 (FGF23) levels in patients with acute kidney injury (AKI) and chronic kidney disease (CKD) are associated with increased morbidity and mortality. Mice with folic acid-induced AKI had an increase in bone FGF23 mRNA expression together with an increase in serum FGF23 and several circulating cytokines including interleukin-6 (IL-6). Dexamethasone partially prevented the increase in IL-6 and FGF23 in the AKI mice. IL-6 knock-out mice fed an adenine diet to induce CKD failed to increase bone FGF23 mRNA and had a muted increase in serum FGF23 levels, compared with the increases in wild-type mice with CKD...
May 31, 2018: Kidney International
https://www.readbyqxmd.com/read/29859350/the-cost-effectiveness-of-minimally-invasive-spine-surgery-in-the-treatment-of-adult-degenerative-scoliosis-a-comparison-of-trans-psoas-and-open-techniques
#4
Ganesh Swamy, Elena Lopatina, Ken C Thomas, Deborah A Marshall, Herman S Johal
INTRODUCTION: Surgical treatment improves quality of life in patients with adult degenerative scoliosis (ADS). However, open ADS surgeries are complex, large magnitude operations associated with a high rate of complications. The lateral trans-psoas interbody fusion technique is a less invasive alternative to open ADS surgery, but less invasive techniques tend to be more expensive. The objective of this study was to evaluate the cost-effectiveness of the trans-psoas technique for patients with ADS over a 12-month time horizon from a public payer perspective...
May 30, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29848341/pin1-inhibition-exerts-potent-activity-against-acute-myeloid-leukemia-through-blocking-multiple-cancer-driving-pathways
#5
Xiaolan Lian, Yu-Min Lin, Shingo Kozono, Megan K Herbert, Xin Li, Xiaohong Yuan, Jiangrui Guo, Yafei Guo, Min Tang, Jia Lin, Yiping Huang, Bixin Wang, Chenxi Qiu, Cheng-Yu Tsai, Jane Xie, Ziang Jeff Cao, Yong Wu, Hekun Liu, Xiaozhen Zhou, Kunping Lu, Yuanzhong Chen
BACKGROUND: The increasing genomic complexity of acute myeloid leukemia (AML), the most common form of acute leukemia, poses a major challenge to its therapy. To identify potent therapeutic targets with the ability to block multiple cancer-driving pathways is thus imperative. The unique peptidyl-prolyl cis-trans isomerase Pin1 has been reported to promote tumorigenesis through upregulation of numerous cancer-driving pathways. Although Pin1 is a key drug target for treating acute promyelocytic leukemia (APL) caused by a fusion oncogene, much less is known about the role of Pin1 in other heterogeneous leukemia...
May 30, 2018: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/29844177/functional-diversification-of-arabidopsis-sec1-related-sm-proteins-in-cytokinetic-and-secretory-membrane-fusion
#6
Matthias Karnahl, Misoon Park, Cornelia Krause, Ulrike Hiller, Ulrike Mayer, York-Dieter Stierhof, Gerd Jürgens
Sec1/Munc18 (SM) proteins contribute to membrane fusion by interacting with Qa-SNAREs or nascent trans -SNARE complexes. Gymnosperms and the basal angiosperm Amborella have only a single SEC1 gene related to the KEULE gene in Arabidopsis However, the genomes of most angiosperms including Arabidopsis encode three SEC1-related SM proteins of which only KEULE has been functionally characterized as interacting with the cytokinesis-specific Qa-SNARE KNOLLE during cell-plate formation. Here we analyze the closest paralog of KEULE named SEC1B...
May 29, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29805041/recessive-spondylocarpotarsal-synostosis-syndrome-due-to-compound-heterozygosity-for-variants-in-myh3
#7
Sophia R Cameron-Christie, Constance F Wells, Marleen Simon, Marja Wessels, Candy Z N Tang, Wenhua Wei, Riku Takei, Coranne Aarts-Tesselaar, Sarah Sandaradura, David O Sillence, Marie-Pierre Cordier, Hermine E Veenstra-Knol, Matteo Cassina, Kathrin Ludkig, Eva Trevisson, Melanie Bahlo, David M Markie, Zandra A Jenkins, Stephen P Robertson
Spondylocarpotarsal synostosis syndrome (SCTS) is characterized by intervertebral fusions and fusion of the carpal and tarsal bones. Biallelic mutations in FLNB cause this condition in some families, whereas monoallelic variants in MYH3, encoding embryonic heavy chain myosin 3, have been implicated in dominantly inherited forms of the disorder. Here, five individuals without FLNB mutations from three families were hypothesized to be affected by recessive SCTS on account of sibling recurrence of the phenotype...
May 16, 2018: American Journal of Human Genetics
https://www.readbyqxmd.com/read/29803924/adipose-specific-expression-of-mouse-rbp7-gene-and-its-developmental-and-metabolic-changes
#8
Jinsoo Ahn, Dong-Hwan Kim, Yeunsu Suh, Jeong-Woong Lee, Kichoon Lee
Alternative splicing and alternative promoter usage have been shown to have an integral role in creating flexibility in the regulation of gene expression. Previous studies collectively showed that expression of the retinol binding protein 7 (Rbp7) gene was adipose tissue-specific across species. Nevertheless, alternative splicing and alternative promoter usage of the Rbp7 gene in adipose tissue and other tissues have not been investigated. The objectives of this study were to investigate protein isoforms of RBP7 produced from alternative splicing, alternative promoter usage and pre-mRNA trans-splicing, and to examine expression patterns of RBP7 isoforms during adipogenesis, cold exposure, and retinol or retinoic acid treatment...
May 24, 2018: Gene
https://www.readbyqxmd.com/read/29789554/synthetic-cytokine-receptors-transmit-biological-signals-using-artificial-ligands
#9
Erika Engelowski, Artur Schneider, Manuel Franke, Haifeng Xu, Ramona Clemen, Alexander Lang, Paul Baran, Christian Binsch, Birgit Knebel, Hadi Al-Hasani, Jens M Moll, Doreen M Floß, Philipp A Lang, Jürgen Scheller
Cytokine-induced signal transduction is executed by natural biological switches, which among many others control immune-related processes. Here, we show that synthetic cytokine receptors (SyCyRs) can induce cytokine signaling using non-physiological ligands. High-affinity GFP- and mCherry-nanobodies were fused to transmembrane and intracellular domains of the IL-6/IL-11 and IL-23 cytokine receptors gp130 and IL-12Rβ1/IL-23R, respectively. Homo- and heterodimeric GFP:mCherry fusion proteins as synthetic cytokine-like ligands were able to induce canonical signaling in vitro and in vivo...
May 23, 2018: Nature Communications
https://www.readbyqxmd.com/read/29788195/eswr1-crem-fusion-in-an-intracranial-myxoid-angiomatoid-fibrous-histiocytoma-like-tumor-a-case-report-and-literature-review
#10
Albane Gareton, Gaëlle Pierron, Karima Mokhtari, Suzanne Tran, Arnault Tauziède-Espariat, Johan Pallud, Guillaume Louvel, Eric Meary, Laurent Capelle, Fabrice Chrétien, Pascale Varlet
Gene fusions of EWSR1 with members of the CREB family of transcription factors (CREB1, ATF1, and CREM) have recently been described in exceptional intracranial myxoid mesenchymal tumors. Although this is a known gene fusion found in various mesenchymal tumors, EWSR1 fusion with CREM has only been observed in 3 intracranial myxoid tumors. In this paper, we present 1 such tumor with in-depth histopathological description and long-term follow-up. There is controversy regarding whether these tumors represent a novel entity or simply an intracranial localization of the myxoid variant of angiomatoid fibrous histiocytoma, a rare soft tissue tumor of the extremities...
May 19, 2018: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/29787261/selective-conversion-of-planar-trans-chlorins-into-highly-twisted-doubly-fused-porphyrins-or-chlorins-via-oxidative-fusion
#11
Nivedita Chaudhri, Nitika Grover, Muniappan Sankar
β-to- o-phenyl doubly fused porphyrins (DFPs) or chlorins (DFCs) were selectively synthesized by facile oxidative fusion of trans-chlorins using 2,3-dichloro-5,6-dicyano-1,4- benzoquinone (DDQ) in good-to-excellent yields (70-92%) under mild reaction conditions with high atom economy. The selectivity in product formation (difused porphyrin or chlorin) was controlled by the presence or absence of a Ni(II) ion in the macrocyclic core. Notably, nickel(II) trans-chlorins selectively yielded DFPs, whereas free-base trans-chlorins afforded only DFCs...
May 22, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29742711/pituitary-apoplexy-following-lumbar-fusion-surgery-in-prone-position-a-case-report
#12
Chunghee Joo, Geol Ha, Yeon Jang
RATIONALE: Pituitary apoplexy (PA) is a syndrome caused by acute hemorrhage or infarction of the pituitary gland, generally within a pituitary adenoma. PA following spinal surgery is a very rare complication and may be difficult to diagnose. However, early diagnosis of PA is essential for the timely treatment of pan-hypopituitarism and prevention of severe neurologic complications. PATIENT CONCERNS: A 73-year-old man had a posterior lumbar fusion surgery over a period of 8 hours on prone position...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29735132/the-lumbar-gap-measurement-in-lenke-1-4c-curves
#13
Hong Zhang, B Stephens Richards, Daniel J Sucato, Chan-Hee Jo, Dong Tran, Linfeng Wang
STUDY DESIGN: Retrospective review. OBJECTIVES: To assess whether the lumbar gap (LG) measurement, which is the distance between the center sacral vertical line and the concave edge of the apical vertebra of the lumbar curve, would be a useful tool to predict the need for lumbar curve fusion in the Lenke 1-4C curves. SUMMARY OF BACKGROUND DATA: The current treatment guidelines of selective thoracic fusion in the Lenke 1-4C curves are not routinely accepted...
May 2018: Spine Deformity
https://www.readbyqxmd.com/read/29700260/a-synthetic-polymer-system-with-repeatable-chemical-recyclability
#14
Jian-Bo Zhu, Eli M Watson, Jing Tang, Eugene Y-X Chen
The development of chemically recyclable polymers offers a solution to the end-of-use issue of polymeric materials and provides a closed-loop approach toward a circular materials economy. However, polymers that can be easily and selectively depolymerized back to monomers typically require low-temperature polymerization methods and also lack physical properties and mechanical strengths required for practical uses. We introduce a polymer system based on γ-butyrolactone (GBL) with a trans-ring fusion at the α and β positions...
April 27, 2018: Science
https://www.readbyqxmd.com/read/29696021/soluble-n-ethylmaleimide-sensitive-factor-attachment-protein-receptor-derived-peptides-for-regulation-of-mast-cell-degranulation
#15
Yoosoo Yang, Byoungjae Kong, Younghoon Jung, Joon-Bum Park, Jung-Mi Oh, Jaesung Hwang, Jae Youl Cho, Dae-Hyuk Kweon
Vesicle-associated V-soluble N -ethylmaleimide-sensitive factor attachment protein receptor (SNARE) proteins and target membrane-associated T-SNAREs (syntaxin 4 and SNAP-23) assemble into a core trans -SNARE complex that mediates membrane fusion during mast cell degranulation. This complex plays pivotal roles at various stages of exocytosis from the initial priming step to fusion pore opening and expansion, finally resulting in the release of the vesicle contents. In this study, peptides with the sequences of various SNARE motifs were investigated for their potential inhibitory effects against SNARE complex formation and mast cell degranulation...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29689198/grasp55-senses-glucose-deprivation-through-o-glcnacylation-to-promote-autophagosome-lysosome-fusion
#16
Xiaoyan Zhang, Leibin Wang, Behnam Lak, Jie Li, Eija Jokitalo, Yanzhuang Wang
The Golgi apparatus is the central hub for protein trafficking and glycosylation in the secretory pathway. However, how the Golgi responds to glucose deprivation is so far unknown. Here, we report that GRASP55, the Golgi stacking protein located in medial- and trans-Golgi cisternae, is O-GlcNAcylated by the O-GlcNAc transferase OGT under growth conditions. Glucose deprivation reduces GRASP55 O-GlcNAcylation. De-O-GlcNAcylated GRASP55 forms puncta outside of the Golgi area, which co-localize with autophagosomes and late endosomes/lysosomes...
April 23, 2018: Developmental Cell
https://www.readbyqxmd.com/read/29684348/crystal-structure-of-a-thermophilic-o-6-alkylguanine-dna-alkyltransferase-derived-self-labeling-protein-tag-in-covalent-complex-with-a-fluorescent-probe
#17
Franca Rossi, Castrese Morrone, Alberto Massarotti, Davide Maria Ferraris, Anna Valenti, Giuseppe Perugino, Riccardo Miggiano
The self-labeling protein tags are robust and versatile tools for studying different molecular aspects of cell biology. In order to be suitable for a wide spectrum of experimental conditions, it is mandatory that these systems are stable after the fluorescent labeling reaction and do not alter the properties of the fusion partner. SsOGT-H5 is an engineered variant alkylguanine-DNA-alkyl-transferase (OGT) of the hyperthermophilic archaeon Sulfolobus solfataricus, and it represents an alternative solution to the SNAP-tag® technology under harsh reaction conditions...
June 7, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29674852/long-term-prospective-outcomes-after-minimally-invasive-trans-iliac-sacroiliac-joint-fusion-using-triangular-titanium-implants
#18
Emily Darr, S Craig Meyer, Peter G Whang, Don Kovalsky, Clay Frank, Harry Lockstadt, Robert Limoni, Andy Redmond, Philip Ploska, Michael Y Oh, Daniel Cher, Abhineet Chowdhary
Background: Minimally invasive sacroiliac joint fusion (SIJF) has become an increasingly accepted surgical option for chronic sacroiliac (SI) joint dysfunction, a prevalent cause of unremitting low back/buttock pain. Objective: The objective of this study was to report clinical and functional outcomes of SIJF using triangular titanium implants (TTI) in the treatment of chronic SI joint dysfunction due to degenerative sacroiliitis or sacroiliac joint (SIJ) disruption at 3 years postoperatively...
2018: Medical Devices: Evidence and Research
https://www.readbyqxmd.com/read/29673648/s6-kinase-1-plays-a-key-role-in-mitochondrial-morphology-and-cellular-energy-flow
#19
Quangdon Tran, Jae-Hun Jung, Jisoo Park, Hyunji Lee, Youngeun Hong, Hyeonjeong Cho, Minhee Kim, Sungjin Park, So-Hee Kwon, Seon-Hwan Kim, George Thomas, Kwang Pyo Kim, Myung-Haing Cho, Jongsun Park
Mitochondrial morphology, which is associated with changes in metabolism, cell cycle, cell development and cell death, is tightly regulated by the balance between fusion and fission. In this study, we found that S6 kinase 1 (S6K1) contributes to mitochondrial dynamics, homeostasis and function. Mouse embryo fibroblasts lacking S6K1 (S6K1-KO MEFs) exhibited more fragmented mitochondria and a higher level of Dynamin related protein 1 (Drp1) and active Drp1 (pS616) in both whole cell extracts and mitochondrial fraction...
August 2018: Cellular Signalling
https://www.readbyqxmd.com/read/29671763/cd9-and-cd81-interactions-and-their-structural-modelling-in-sperm-prior-to-fertilization
#20
Michaela Frolikova, Pavla Manaskova-Postlerova, Jiri Cerny, Jana Jankovicova, Ondrej Simonik, Alzbeta Pohlova, Petra Secova, Jana Antalikova, Katerina Dvorakova-Hortova
Proteins CD9 and CD81 are members of the tetraspanin superfamily and were detected in mammalian sperm, where they are suspected to form an active tetraspanin web and to participate in sperm⁻egg membrane fusion. The importance of these two proteins during the early stages of fertilization is supported by the complete sterility of CD9/CD81 double null female mice. In this study, the putative mechanism of CD9/CD81 involvement in tetraspanin web formation in sperm and its activity prior to fertilization was addressed...
April 19, 2018: International Journal of Molecular Sciences
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