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https://www.readbyqxmd.com/read/28432915/proton-induced-production-and-radiochemical-isolation-of-44-ti-from-scandium-metal-targets-for-44-ti-44-sc-generator-development
#1
Valery Radchenko, Jonathan W Engle, Dmitri G Medvedev, Joel M Maassen, Cleo M Naranjo, George A Unc, Catherine A L Meyer, Tara Mastren, Mark Brugh, Leonard Mausner, Cathy S Cutler, Eva R Birnbaum, Kevin D John, F Meiring Nortier, Michael E Fassbender
Scandium-44g (half-life 3.97h) shows promise for application in positron emission tomography (PET), due to favorable decay parameters. One of the sources of (44g)Sc is the (44)Ti/(44g)Sc generator, which can conveniently provide this radioisotope on a daily basis at a diagnostic facility. Titanium-44 (half-life 60.0 a), in turn, can be obtained via proton irradiation of scandium metal targets. A substantial (44)Ti product batch, however, requires high beam currents, long irradiation times and an elaborate chemical procedure for (44)Ti isolation and purification...
April 7, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/28430962/ulk1-prevents-cardiac-dysfunction-in-obesity-through-autophagy-meditated-regulation-of-lipid-metabolism
#2
Minae An, Dong-Ryeol Ryu, Jang Won Park, Ji Ha Choi, Eun-Mi Park, Kyung Eun Lee, Minna Woo, Minsuk Kim
Aims: Autophagy is essential to maintain tissue homeostasis, particularly in long-lived cells such as cardiomyocytes. Whereas many studies support the importance of autophagy in the mechanisms underlying obesity-related cardiac dysfunction, the role of autophagy in cardiac lipid metabolism remains unclear. In the heart, lipotoxicity is exacerbated by cardiac lipoprotein lipase (LPL), which mediates accumulation of fatty acids to the heart through intravascular triglyceride (TG) hydrolysis...
April 17, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28428253/twitchin-kinase-inhibits-muscle-activity
#3
Yohei Matsunaga, Hyundoo Hwang, Barbara Franke, Rhys Williams, McKenna Penley, Hiroshi Qadota, Hong Yi, Levi T Morran, Hang Lu, Olga Mayans, Guy M Benian
Muscle sarcomeres contain giant polypeptides composed of multiple immunoglobulin and fibronectin domains and one or two protein kinase domains. Although binding partners for a number of this family's kinase domains have been identified, the catalytic necessity of these kinase domains remains unknown. In addition, various members of this kinase family are suspected pseudokinases with no, or little, activity. Here, we address catalytic necessity for the first time using the prototypic invertebrate representative twitchin (UNC-22) from C...
April 20, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28426941/behavioral-deficits-and-neural-damage-of-caenorhabditis-elegans-induced-by-three-rare-earth-elements
#4
Tiantian Xu, Manke Zhang, Jiani Hu, Zihan Li, Taipu Wu, Jianing Bao, Siyu Wu, Lili Lei, Defu He
Rare earth elements (REEs) are widely used in industry, agriculture, medicine and daily life in recent years. However, environmental and health risks of REEs are still poorly understood. In this study, neurotoxicity of trichloride neodymium, praseodymium and scandium were evaluated using nematode Caenorhabditis elegans as the assay system. Median lethal concentrations (48 h) were 99.9, 157.2 and 106.4 mg/L for NdCl3, PrCl3 and ScCl3, respectively. Sublethal dose (10-30 mg/L) of these trichloride salts significantly inhibited body length of nematodes...
April 17, 2017: Chemosphere
https://www.readbyqxmd.com/read/28424218/gop-1-promotes-apoptotic-cell-degradation-by-activating-the-small-gtpase-rab2-in-c-elegans
#5
Jianhua Yin, Yaling Huang, Pengfei Guo, Siqi Hu, Sawako Yoshina, Nan Xuan, Qiwen Gan, Shohei Mitani, Chonglin Yang, Xiaochen Wang
Apoptotic cells generated by programmed cell death are engulfed by phagocytes and enclosed within plasma membrane-derived phagosomes. Maturation of phagosomes involves a series of membrane-remodeling events that are governed by the sequential actions of Rab GTPases and lead to formation of phagolysosomes, where cell corpses are degraded. Here we identified gop-1 as a novel regulator of apoptotic cell clearance in Caenorhabditis elegans Loss of gop-1 affects phagosome maturation through the RAB-5-positive stage, causing defects in phagosome acidification and phagolysosome formation, phenotypes identical to and unaffected by loss of unc-108, the C...
April 19, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28420820/high-insulin-impaired-ovarian-function-in-early-pregnant-mice-and-the-role-of-autophagy-in-this-process
#6
Yan Su, Juan Wu, Junlin He, Xueqing Liu, Xuemei Chen, Yubin Ding, Chen Zhang, Wenqi Chen, Yingxiong Wang, Rufei Gao
Metabolic disorders, such as PCOS (polycystic ovarian syndrome) and T2DM (type 2 diabetes mellitus), are associated with menstrual dysfunction, anovulation, infertility, and early pregnancy loss. Ovarian dysfunction is not only related to low pregnancy rates but also to the increased risk of miscarriage. Women with PCOS or T2DM, characterized by hyperinsulinemia, commonly experience ovarian dysfunction. In this study, we first explored whether high insulin levels directly affected ovarian functioning during embryo implantation...
April 18, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28418071/chronic-exposure-to-graphene-based-nanomaterials-induces-behavioral-deficits-and-neural-damage-in-caenorhabditis-elegans
#7
Ping Li, Tiantian Xu, Siyu Wu, Lili Lei, Defu He
Nanomaterials of graphene and its derivatives have been widely applied in recent years, but whose impacts on the environment and health are still not well understood. In the present study, the potential adverse effects of graphite (G), graphite oxide nanoplatelets (GO) and graphene quantum dots (GQDs) on the motor nervous system were investigated using nematode Caenorhabditis elegans as the assay system. After being characterized using TEM, SEM, XPS and PLE, three nanomaterials were chronically exposed to C...
April 18, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28401650/caenorhabditis-elegans-orthologs-of-human-genes-differentially-expressed-with-age-are-enriched-for-determinants-of-longevity
#8
George L Sutphin, Grant Backer, Susan Sheehan, Shannon Bean, Caroline Corban, Teresa Liu, Marjolein J Peters, Joyce B J van Meurs, Joanne M Murabito, Andrew D Johnson, Ron Korstanje
We report a systematic RNAi longevity screen of 82 Caenorhabditis elegans genes selected based on orthology to human genes differentially expressed with age. We find substantial enrichment in genes for which knockdown increased lifespan. This enrichment is markedly higher than published genomewide longevity screens in C. elegans and similar to screens that preselected candidates based on longevity-correlated metrics (e.g., stress resistance). Of the 50 genes that affected lifespan, 46 were previously unreported...
April 12, 2017: Aging Cell
https://www.readbyqxmd.com/read/28388304/laparoscopic-ureteroureterostomy-with-an-intraoperative-retrograde-ureteroscopy-assisted-technique-for-distal-ureteral-injury-secondary-to-gynecological-surgery-a-retrospective-comparison-with-laparoscopic-ureteroneocystostomy
#9
Zhaohui Wang, Zhi Chen, Yao He, Bingsheng Li, Zhiqiang Wen, Xiang Chen
OBJECTIVES: The aim of this study was to compare the operative and postoperative outcomes of laparoscopic ureteroureterostomy (LAP-UU) using a retrograde ureteroscopy-assisted technique with laparoscopic ureteroneocystostomy (LAP-UNC) in treating ureteral injury after gynecological surgery. MATERIALS AND METHODS: The study analyzed 60 ureteral injury repairs performed between May 2010 and February 2016 in patients who underwent either LAP-UU using the retrograde ureteroscopy-assisted technique (n = 26) or LAP-UNC (n = 34)...
April 7, 2017: Scandinavian Journal of Urology
https://www.readbyqxmd.com/read/28384160/a-wnt-planar-polarity-pathway-instructs-neurite-branching-by-restricting-f-actin-assembly-through-endosomal-signaling
#10
Chun-Hao Chen, Chun-Wei He, Chien-Po Liao, Chun-Liang Pan
Spatial arrangement of neurite branching is instructed by both attractive and repulsive cues. Here we show that in C. elegans, the Wnt family of secreted glycoproteins specify neurite branching sites in the PLM mechanosensory neurons. Wnts function through MIG-1/Frizzled and the planar cell polarity protein (PCP) VANG-1/Strabismus/Vangl2 to restrict the formation of F-actin patches, which mark branching sites in nascent neurites. We find that VANG-1 promotes Wnt signaling by facilitating Frizzled endocytosis and genetically acts in a common pathway with arr-1/β-arrestin, whose mutation results in defective PLM branching and F-actin patterns similar to those in the Wnt, mig-1 or vang-1 mutants...
April 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28381171/identification-and-validation-of-a-novel-autophagy-gene-expression-signature-for-human-bladder-cancer-patients
#11
Sanaa Eissa, Marwa Matboli, Nahla Awad, Yousif Kotb
We sought to identify and validate a novel urinary autophagy transcript signature in patients with bladder cancer and evaluate its clinical utility. We performed an initial screening for seven autophagy transcript-based panel (autophagy-related protein 12 (ATG12); WD repeat domain, phosphoinositide interacting 2 (WIPI2); FYVE and coiled-coil domain-containing protein 1 (FYCO1); microtubule-associated protein light chain (MAPLC3); RB1-inducible coiled-coil 1 (RB1CC1); tachylectin-II-like beta-propeller domain 1 (TECPR1); and Unc-51-like kinase (ULK1)) that was identified based on bioinformatics analysis followed by SYBR Green-based polymerase chain reaction array validation in paired tissue and urine samples...
April 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28379541/resistance-to-apoptosis-and-autophagy-leads-to-enhanced-survival-in-sertoli-cells
#12
Ferial Aslani, Tim Sebastian, Miguel Keidel, Suada Fröhlich, Hans-Peter Elsässer, Hans-Christian Schuppe, Jörg Klug, Poornima Mahavadi, Monika Fijak, Martin Bergmann, Andreas Meinhardt, Sudhanshu Bhushan
STUDY QUESTION: What is the underlying mechanism of Sertoli cell (SC) resistance to cell death? SUMMARY ANSWER: High expression of pro-survival B cell lymphoma-2 (BCL2) proteins and inhibition of apoptosis and autophagy prolongs SC survival upon exposure to stress stimuli. WHAT IS KNOWN ALREADY: In human and in experimental models of orchitis, tolerogenic SC survive stress conditions, while germ cells undergo massive apoptosis. In general, non-dividing highly differentiated cells tend to resist stress conditions for a longer time by favoring activation of pro-survival mechanisms and inhibition of cell death pathways...
April 3, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28356421/unc-45a-is-required-for-neurite-extension-via-controlling-nmii-activation
#13
Yoshie Iizuka, Ashley Mooneyham, Andrew Sieben, Kevin Chen, Makayla Maile, Raffaele Hellweg, Florian Schütz, Kebebush Teckle, Timothy Starr, Venugopal Thayanithy, Rachel Isaksson Vogel, Emil Lou, Michael K Lee, Martina Bazzaro
UNC-45A is a highly conserved member of the UNC-45/CRO1/She4p family of proteins that act as chaperones for conventional and nonconventional myosins. NMII mediates contractility and actin-based motility, which are fundamental for proper growth cone motility and neurite extension. To date, the presence and the role of UNC-45A in neuronal differentiation is largely unknown.Here we demonstrate that UNC-45A is a growth cone localized, NMII-associated, novel component of the multi-protein complex regulating growth cone dynamics...
March 29, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28356093/conflict-related-trauma-and-bereavement-exploring-differential-symptom-profiles-of-prolonged-grief-and-posttraumatic-stress-disorder
#14
Carina Heeke, Nadine Stammel, Manuel Heinrich, Christine Knaevelsrud
BACKGROUND: Exposure to trauma and bereavement is common in conflict-affected regions. Previous research suggests considerable heterogeneity in responses to trauma and loss with varying symptom representations. The purpose of the current study was to (1) identify classes of prolonged grief disorder (PGD) and posttraumatic stress disorder (PTSD) symptom profiles among individuals who were exposed to both trauma and loss due to the Colombian armed conflict and (2) to examine whether sociodemographic, loss and trauma-related characteristics could predict class membership...
March 29, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28347919/autophagy-related-polymorphisms-predict-hypertension-in-patients-with-metastatic-colorectal-cancer-treated-with-folfiri-and-bevacizumab-results-from-tribe-and-fire-3-trials
#15
Martin D Berger, Shinichi Yamauchi, Shu Cao, Diana L Hanna, Yu Sunakawa, Marta Schirripa, Satoshi Matsusaka, Dongyun Yang, Susan Groshen, Wu Zhang, Yan Ning, Satoshi Okazaki, Yuji Miyamoto, Mitsukuni Suenaga, Sara Lonardi, Chiara Cremolini, Alfredo Falcone, Volker Heinemann, Fotios Loupakis, Sebastian Stintzing, Heinz-Josef Lenz
PURPOSE: The most frequent bevacizumab-related side-effects are hypertension, proteinuria, bleeding and thromboembolism. To date, there is no biomarker that predicts anti-VEGF-associated toxicity. As autophagy inhibits angiogenesis, we hypothesised that single-nucleotide polymorphisms (SNPs) within autophagy-related genes may predict bevacizumab-mediated toxicity in patients with metastatic colorectal cancer (mCRC). PATIENTS AND METHODS: Patients with mCRC treated with first-line FOLFIRI and bevacizumab in two phase III randomised trials, namely the TRIBE trial (n = 219, discovery cohort) and the FIRE-3 trial (n = 234, validation cohort) were included in this study...
March 24, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28344334/the-kif1a-homolog-unc-104-is-important-for-spontaneous-release-postsynaptic-density-maturation-and-perisynaptic-scaffold-organization
#16
Yao V Zhang, Shabab B Hannan, Jeannine V Kern, Doychin T Stanchev, Baran Koç, Thomas R Jahn, Tobias M Rasse
The kinesin-3 family member KIF1A has been shown to be important for experience dependent neuroplasticity. In Drosophila, amorphic mutations in the KIF1A homolog unc-104 disrupt the formation of mature boutons. Disease associated KIF1A mutations have been associated with motor and sensory dysfunctions as well as non-syndromic intellectual disability in humans. A hypomorphic mutation in the forkhead-associated domain of Unc-104, unc-104(bris), impairs active zone maturation resulting in an increased fraction of post-synaptic glutamate receptor fields that lack the active zone scaffolding protein Bruchpilot...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28315862/the-evolving-role-of-rituximab-in-adult-minimal-change-glomerulopathy
#17
Landon C Brown, Meghan A Jobson, Fernanda Payan Schober, Emily H Chang, Ronald J Falk, Patrick H Nachman, William F Pendergraft
BACKGROUND: Minimal-change glomerulopathy is defined histologically by the presence of normal glomeruli on light microscopy and diffuse podocyte effacement on electron microscopy. Although effective in children, corticosteroid treatment in adults is more variable and time to response can be prolonged. Data to support rituximab use in adults with corticosteroid-dependent or resistant minimal-change glomerulopathy are limited. Here, we describe the clinical course of adults with corticosteroid-dependent or -resistant minimal-change glomerulopathy who received rituximab...
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28315811/variant-two-stage-ileal-pouch-anal-anastomosis-an-innovative-and-effective-alternative-to-standard-resection-in-ulcerative-colitis
#18
Jennifer Samples, Krista Evans, Nicole Chaumont, Paula Strassle, Timothy Sadiq, Mark Koruda
BACKGROUND: Ulcerative colitis patients have been historically treated with standard single, two and three stage operative approaches. We perform a variant two-stage procedure beginning with total abdominal colectomy and end ileostomy followed by completion proctectomy and ileal pouch-anal anastomosis without a diverting loop ileostomy. The present study evaluates the effectiveness of this innovative alternative. STUDY DESIGN: Patients with ulcerative colitis admitted to UNC Hospital between 2003 and 2010 for IPAA were eligible for inclusion...
January 28, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28292700/canonical-and-noncanonical-functions-of-ulk-atg1
#19
REVIEW
Bo Wang, Mondira Kundu
Mammalian Unc-51-like kinases 1 and 2 (ULK1 and ULK2) belong to the ULK/Atg1 family of serine/threonine kinases, which are conserved from yeast to mammals. Although ULK/Atg1 is best known for regulating flux through the autophagy pathway, it has evolutionarily conserved noncanonical functions in protein trafficking that are essential for maintaining cellular homeostasis. As a direct target of energy- and nutrient-sensing kinases, ULK/Atg1 is positioned to regulate the distribution and use of cellular resources in response to metabolic cues...
March 11, 2017: Current Opinion in Cell Biology
https://www.readbyqxmd.com/read/28291263/circumcision-does-not-alter-long-term-glucocorticoids-accumulation-or-psychological-effects-associated-with-trauma-and-stressor-related-disorders
#20
E Ullmann, J Licinio, A Barthel, K Petrowski, B Oratovski, T Stalder, C Kirschbaum, S R Bornstein
Male infants and boys through early adolescence can undergo circumcision either for the sake of upholding religious traditions or for medical reasons. According to both, Jewish as well as Islamic tenets, circumcision is a religious rite symbolizing the bond with God. The World Health Organization (WHO), the United Nations Council (UNC) as well as the American Academy of Pediatrics (AAP), and the Centers for Disease Control and Prevention (CDC) strongly recommend circumcision to promote hygiene and prevent disease...
March 14, 2017: Translational Psychiatry
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