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https://www.readbyqxmd.com/read/29180448/a-neutralizing-antibody-that-blocks-delivery-of-the-enzymatic-cargo-of-clostridium-difficile-toxin-tcdb-into-host-cells
#1
Heather K Kroh, Ramyavardhanee Chandrasekaran, Zhifen Zhang, Kim Rosenthal, Rob Woods, Xiaofang Jin, Andrew C Nyborg, G Jonah Rainey, Paul Warrener, Roman A Melnyk, Benjamin W Spiller, D Borden Lacy
Clostridium difficile infection (CDI) is the leading cause of hospital-acquired diarrhea and is mediated by the actions of two toxins, TcdA and TcdB. The toxins perturb host cell function through a multi-step process of receptor binding, endocytosis, low pH-induced pore formation, and the translocation and delivery of an N-terminal glucosyltransferase domain (GTD) that inactivates host GTPases. Infection studies with isogenic strains having defined toxin deletions have established TcdB as an important target for therapeutic development...
November 27, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29149431/seom-clinical-guidelines-in-gestational-trophoblastic-disease-2017
#2
A Santaballa, Y García, A Herrero, N Laínez, J Fuentes, A De Juan, V Rodriguez Freixinós, J Aparicio, A Casado, E García-Martinez
Gestational trophoblastic disease (GTD) is a rare but curable disease. Recent improvements in diagnosis and molecular biology have resulted in changes in staging and treatment. These guidelines provide evidence-based recommendation on how to manage GTD.
November 17, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/29113877/-maternal-deaths-due-to-gestational-trophoblastic-diseases-results-from-the-french-confidential-enquiry-into-maternal-deaths-2010-2012
#3
M Dreyfus
Gestational trophoblastic diseases (GTD) correspond to several entities which all have a common pattern: hypersecretion of human chorionic gondotrophin by trophoblastic hyperplasia. Between 2010 and 2012, there were 4 maternal deaths due to GTD (choriocarcinoma). The ratio of maternal death caused by GTD was 0,16/100,000 living births which was similar to the rate from the 2007-2009 period. These deaths represented 1.6% from the whole maternal mortality and 3.3% of the direct maternal mortality. These four deaths occurred after delivery and the diagnosis of GTD was made between 60 and 180 days in the postpartum period...
November 4, 2017: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/29093619/short-and-long-term-results-of-endoscopic-ultrasound-guided-transmural-drainage-for-pancreatic-pseudocysts-and-walled-off-necrosis
#4
Yuto Watanabe, Rintaro Mikata, Shin Yasui, Hiroshi Ohyama, Harutoshi Sugiyama, Yuji Sakai, Toshio Tsuyuguchi, Naoya Kato
AIM: To evaluate the short- and long-term results of endoscopic ultrasound-guided transmural drainage (EUS-GTD) for pancreatic fluid collection (PFC) and identify the predictive factors of treatment outcome for walled-off necrosis (WON) managed by EUS-GTD alone. METHODS: We investigated 103 consecutive patients with PFC who underwent EUS-GTD between September 1999 and August 2015. Patients were divided into four groups as follows: WON (n = 40), pancreatic pseudocyst (PPC; n = 11), chronic pseudocyst (n = 33), and others (n = 19)...
October 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29072060/risk-factors-for-hydatidiform-mole-is-husband%C3%A2-s-job-a-major-risk-factor
#5
Hourieh Shamshiri Milani, Morteza Abdollahi, Sara Torbati, Taha Asbaghi, Eznollah Azargashb
Background: The hydatidiform mole (HM) is a precancerous placenta considered as a gestational trophoblastic disease (GTD). It may convert to more invasive forms of gestational trophoblastic neoplasia (GTN), endangering women’s health by more severe complications. Most GTN cases originate from HM, which is associated with uterine bleeding, preeclampsia and thyroid problems. Its etiology has not been adequately explored, but some risk factors have been reported. The aim of the present study was to assess any relationships between molar pregnancy and factors including mothers’ and husbands’ occupations...
October 26, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28969138/gestational-trophoblastic-disease-clinicopathological-study-at-tertiary-care-hospital
#6
Sunil Vitthalrao Jagtap, Vidhya Aher, Suchi Gadhiya, Swati Sunil Jagtap
INTRODUCTION: Gestational Trophoblastic Disease (GTD) is a term used for a group of pregnancy-related tumours. These consist of various tumours and tumour like lesions characterized by proliferation of trophoblastic tissue. Amongst GTD, hydatidiform moles are the most common form. These lesions sometimes may develop into invasive moles, or, in rare cases, into choriocarcinoma. AIM: To study the clinicopathologic characteristics and prevalence of different forms of gestational trophoblastic disease in a tertiary care hospital...
August 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28892983/transient-thyrotoxicosis-in-molar-pregnancy
#7
Samarth Virmani, Sujatha B Srinivas, Rama Bhat, Raghavendra Rao, Ranjini Kudva
Molar pregnancy is one of the components of a broader spectrum of diseases known as Gestational Trophoblastic Disease (GTD), presenting with amenorrhoea and irregular bleeding which may be rarely associated with passage of vesicles per vagina. However, it can rarely be associated with hyperthyroidism, which may be associated with clinical features of hyperthyroidism. The following is a report of a 20-year-old woman who presented with amenorrhea followed by irregular bleeding per vagina, thyromegaly and abnormal levels of thyroid hormones...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28817573/network-representations-of-angular-regions-for-electromagnetic-scattering
#8
Vito G Daniele, Guido Lombardi, Rodolfo S Zich
Network modeling in electromagnetics is an effective technique in treating scattering problems by canonical and complex structures. Geometries constituted of angular regions (wedges) together with planar layers can now be approached with the Generalized Wiener-Hopf Technique supported by network representation in spectral domain. Even if the network representations in spectral planes are of great importance by themselves, the aim of this paper is to present a theoretical base and a general procedure for the formulation of complex scattering problems using network representation for the Generalized Wiener Hopf Technique starting basically from the wave equation...
2017: PloS One
https://www.readbyqxmd.com/read/28771616/quantification-of-transplant-derived-circulating-cell-free-dna-in-absence-of-a-donor-genotype
#9
Eilon Sharon, Hao Shi, Sandhya Kharbanda, Winston Koh, Lance R Martin, Kiran K Khush, Hannah Valantine, Jonathan K Pritchard, Iwijn De Vlaminck
Quantification of cell-free DNA (cfDNA) in circulating blood derived from a transplanted organ is a powerful approach to monitoring post-transplant injury. Genome transplant dynamics (GTD) quantifies donor-derived cfDNA (dd-cfDNA) by taking advantage of single-nucleotide polymorphisms (SNPs) distributed across the genome to discriminate donor and recipient DNA molecules. In its current implementation, GTD requires genotyping of both the transplant recipient and donor. However, in practice, donor genotype information is often unavailable...
August 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28730277/regulation-of-class-v-myosin
#10
REVIEW
Ning Zhang, Lin-Lin Yao, Xiang-Dong Li
Class V myosin (myosin-5) is a molecular motor that functions as an organelle transporter. The activation of myosin-5's motor function has long been known to be associated with a transition from the folded conformation in the off-state to the extended conformation in the on-state, but only recently have we begun to understand the underlying mechanism. The globular tail domain (GTD) of myosin-5 has been identified as the inhibitory domain and has recently been shown to function as a dimer in regulating the motor function...
July 20, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28713902/establishment-and-characterization-of-cell-lines-derived-from-complete-hydatidiform-mole
#11
Eiko Yamamoto, Kaoru Niimi, Tohru Kiyono, Toshimichi Yamamoto, Kimihiro Nishino, Kenichi Nakamura, Tomomi Kotani, Hiroaki Kajiyama, Kiyosumi Shibata, Fumitaka Kikkawa
Gestational trophoblastic diseases (GTDs) are a group of diseases characterized by abnormal cellular proliferation of atypical trophoblasts. A hydatidiform mole is an abnormal pregnancy caused by genetic fertilization disorders, and it can be classified as a complete hydatidiform mole (CHM) or a partial hydatidiform mole. The aim of this study was to establish cell lines from CHMs and to characterize the cells for future studies concerning GTD. HMol1-2C, HMol1-3B, HMol1-8 and HMol3-1B were established from primary cultures of CHM explants following the introduction of different combinations of genes including human telomerase reverse transcriptase (hTERT), a mutant form of CDK (CDK4R24C), cyclin D1, p53C234, MYC and HRAS...
September 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28692637/comparison-of-2-human-chorionic-gonadotropin-immunoassays-commercially-available-for-monitoring-patients-with-gestational-trophoblastic-disease
#12
Juliana Maria Quinalha de Souza, Antonio Braga, Rafael Sanches Dos Santos, Marcos Montanha Ramos, Rafael Cortés-Charry, Izildinha Maestá
OBJECTIVE: The aim of this study was to compare serum human chorionic gonadotropin (hCG) levels in patients with gestational trophoblastic disease (GTD) using 2 commercially available hCG immunoassays. METHODS: Serum samples were obtained from patients with GTD attending the Botucatu Medical School Trophoblastic Diseases Center of São Paulo State University (UNESP), from November 2014 to October 2015. Serum hCG levels were measured with both Architect i2000SR and Immulite 2000 XPi chemiluminescence assays...
September 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28683302/salivary-calculi-removal-by-minimally-invasive-techniques-a-decision-tree-based-on-the-diameter-of-the-calculi-and-their-position-in-the-excretory-duct
#13
Jean Marc Foletti, Nicolas Graillon, Simon Avignon, Laurent Guyot, Cyrille Chossegros
PURPOSE: To suggest a decision tree for the choice of the best minimally invasive technique to treat submandibular and parotid calculi, according to the diameter of the calculi and their position in the excretory duct. MATERIALS AND METHODS: Submandibular and parotid ducts can both be divided into thirds, delineated by easily recognizable landmarks. The diameter of calculi is schematically classified into 1 of these 3 categories: floating, slightly impacted, or largely impacted...
June 14, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28607326/morphological-features-and-immunohistochemical-expression-of-p57kip2-in-early-molar-pregnancies-and-their-relations-to-the-progression-to-persistent-trophoblastic-disease
#14
Marwa Khashaba, Mohammad Arafa, Eman Elsalkh, Reda Hemida, Wagiha Kandil
BACKGROUND: Although the morphological features characteristic of products of conception specimens including molar pregnancies are well described, substantial histopathological similarities are observed between the different entities, especially in cases of early pregnancies. Furthermore, there are no current solid criteria that could predict cases with progression to persistent gestational trophoblastic disease. In this study, we aimed to determine the most specific histopathological and immunohistochemical features required for accurate diagnosis that can reliably predict the clinical behavior...
July 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28571514/obstetric-ultrasound-aids-prompt-referral-of-gestational-trophoblastic-disease-in-marginalized-populations-on-the-thailand-myanmar-border
#15
Kathryn McGregor, Aung Myat Min, Noaeni Karunkonkowit, Suporn Keereechareon, Mary Ellen Tyrosvoutis, Nay Win Tun, Marcus J Rijken, Gabie Hoogenboom, Machteld Boel, Kesinee Chotivanich, François Nosten, Rose McGready
BACKGROUND: The use of obstetric ultrasound in the diagnosis of gestational trophoblastic disease (GTD) in high-income settings is well established, leading to prompt management and high survival rates. Evidence from low-income settings suggests ultrasound is essential in identifying complicated pregnancies, but with limited studies reviewing specific conditions including GTD. OBJECTIVE: The aim of this study is to review the role of ultrasound in diagnosis and management of GTD in a marginalized population on the Thailand-Myanmar border...
2017: Global Health Action
https://www.readbyqxmd.com/read/28567058/implementation-and-monitoring-of-a-gestational-trophoblastic-disease-management-program-in-a-tertiary-hospital-in-morocco-opportunities-and-challenges
#16
Imane Khachani, Mohamed Hassan Alami, Rachid Bezad
Objective. Gestational Trophoblastic Disease (GTD) management requires clear guidelines for diagnosis, treatment, and follow-up. Unequal management skills among practitioners, inadequate treatment, irregular surveillance, and drop-out are common in resource-limited settings and can lead to life-threatening complications and morbidities. To address these challenges, we implemented a GTD Management Program at the National Center for Reproductive Health in Rabat, Morocco. Methods and Program Description. In-depth review of management protocols was carried out, and concise guidelines were developed, with targeted training for physicians...
2017: Obstetrics and Gynecology International
https://www.readbyqxmd.com/read/28379570/gene-tree-discordance-does-not-explain-away-the-temporal-decline-of-convergence-in-mammalian-protein-sequence-evolution
#17
Zhengting Zou, Jianzhi Zhang
Several authors reported lower frequencies of protein sequence convergence between more distantly related evolutionary lineages and attributed this trend to epistasis, which renders the acceptable amino acids at a site more different and convergence less likely in more divergent lineages. A recent primate study, however, suggested that this trend is at least partially and potentially entirely an artifact of gene tree discordance (GTD). Here, we demonstrate in a genome-wide data set from 17 mammals that the temporal trend remains (1) upon the control of the GTD level, (2) in genes whose genealogies are concordant with the species tree, and (3) for convergent changes, which are extremely unlikely to be caused by GTD...
July 1, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28365860/low-molecular-weight-hyaluronan-induces-migration-of-human-choriocarcinoma-jeg-3-cells-mediated-by-rhamm-as-well-as-by-pi3k-and-mapk-pathways
#18
Marilina Mascaró, Matías A Pibuel, Silvina L Lompardía, Mariangeles Díaz, Elsa Zotta, Maria I Bianconi, Néstor Lago, Silvina Otero, Gustavo Jankilevich, Elida Alvarez, Silvia E Hajos
Hyaluronan (HA) is the major glycosaminoglycan present in the extracellular matrix. It is produced by some tumours and promotes proliferation, differentiation and migration among others cellular processes. Gestational trophoblastic disease (GTD) is composed by non-tumour entities, such as hydatidiform mole (HM), which is the most common type of GTD and also malignant entities such as choriocarcinoma (CC) and placental site trophoblastic tumour (PSTT), being CC the most aggressive tumour. Although there is a growing understanding of GTD biology, the role of HA in the pathogenesis of this group of diseases remains largely unknown...
August 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28287945/gestational-trophoblastic-disease-clinical-and-imaging-features
#19
REVIEW
Akram M Shaaban, Maryam Rezvani, Reham R Haroun, Anne M Kennedy, Khaled M Elsayes, Jeffrey D Olpin, Mohamed E Salama, Bryan R Foster, Christine O Menias
Gestational trophoblastic disease (GTD) is a spectrum of both benign and malignant gestational tumors, including hydatidiform mole (complete and partial), invasive mole, choriocarcinoma, placental site trophoblastic tumor, and epithelioid trophoblastic tumor. The latter four entities are referred to as gestational trophoblastic neoplasia (GTN). These conditions are aggressive with a propensity to widely metastasize. GTN can result in significant morbidity and mortality if left untreated. Early diagnosis of GTD is essential for prompt and successful management while preserving fertility...
March 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28266547/the-molecular-motor-myosin-va-interacts-with-the-cilia-centrosomal-protein-rpgrip1l
#20
L H P Assis, R M P Silva-Junior, L G Dolce, M R Alborghetti, R V Honorato, A F Z Nascimento, T D Melo-Hanchuk, D M Trindade, C C C Tonoli, C T Santos, P S L Oliveira, R E Larson, J Kobarg, E M Espreafico, P O Giuseppe, M T Murakami
Myosin Va (MyoVa) is an actin-based molecular motor abundantly found at the centrosome. However, the role of MyoVa at this organelle has been elusive due to the lack of evidence on interacting partners or functional data. Herein, we combined yeast two-hybrid screen, biochemical studies and cellular assays to demonstrate that MyoVa interacts with RPGRIP1L, a cilia-centrosomal protein that controls ciliary signaling and positioning. MyoVa binds to the C2 domains of RPGRIP1L via residues located near or in the Rab11a-binding site, a conserved site in the globular tail domain (GTD) from class V myosins...
March 7, 2017: Scientific Reports
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