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https://www.readbyqxmd.com/read/28813673/multipotent-basal-stem-cells-maintained-in-localized-proximal-niches-support-directed-long-ranging-epithelial-flows-in-human-prostates
#1
Mohammad Moad, Edouard Hannezo, Simon J Buczacki, Laura Wilson, Amira El-Sherif, David Sims, Robert Pickard, Nicholas A Wright, Stuart C Williamson, Doug M Turnbull, Robert W Taylor, Laura Greaves, Craig N Robson, Benjamin D Simons, Rakesh Heer
Sporadic mitochondrial DNA mutations serve as clonal marks providing access to the identity and lineage potential of stem cells within human tissues. By combining quantitative clonal mapping with 3D reconstruction of adult human prostates, we show that multipotent basal stem cells, confined to discrete niches in juxta-urethral ducts, generate bipotent basal progenitors in directed epithelial migration streams. Basal progenitors are then dispersed throughout the entire glandular network, dividing and differentiating to replenish the loss of apoptotic luminal cells...
August 15, 2017: Cell Reports
https://www.readbyqxmd.com/read/28813107/climatic-characteristics-of-the-2010-2016-drought-in-the-semiarid-northeast-brazil-region
#2
José A Marengo, Lincoln M Alves, Regina C S Alvala, Ana Paula Cunha, Sheila Brito, Osvaldo L L Moraes
This study discusses the climatological aspects of the most severe drought ever recorded in the semiarid region Northeast Brazil. Droughts are recurrent in the region and while El Nino has driven some of these events others are more dependent on the tropical North Atlantic sea surface temperature fields. The drought affecting this region during the last 5 years shows an intensity and impact not seen in several decades in the regional economy and society. The analysis of this event using drought indicators as well as meteorological fields shows that since the middle 1990s to 2016, 16 out of 25 years experienced rainfall below normal...
August 14, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28812643/a-submarine-volcanic-eruption-leads-to-a-novel-microbial-habitat
#3
Roberto Danovaro, Miquel Canals, Michael Tangherlini, Antonio Dell'Anno, Cristina Gambi, Galderic Lastras, David Amblas, Anna Sanchez-Vidal, Jaime Frigola, Antoni M Calafat, Rut Pedrosa-Pàmies, Jesus Rivera, Xavier Rayo, Cinzia Corinaldesi
Submarine volcanic eruptions are major catastrophic events that allow investigation of the colonization mechanisms of newly formed seabed. We explored the seafloor after the eruption of the Tagoro submarine volcano off El Hierro Island, Canary Archipelago. Near the summit of the volcanic cone, at about 130 m depth, we found massive mats of long, white filaments that we named Venus's hair. Microscopic and molecular analyses revealed that these filaments are made of bacterial trichomes enveloped within a sheath and colonized by epibiotic bacteria...
April 24, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812111/syndrome-of-inappropriate-anti-diuresis-induces-volume-dependent-hypercalciuria
#4
J Grellier, A Jaafar, A Martin, M El Alaoui, C Lebely, I Tack, M Vallet
Hyponatremia is associated with bone demineralization. We hypothesized that, during hyponatremia, calciuria and calcium balance depend on volemic status. We evaluated calciuria in patients with hyponatremia, secondary to SIAD or hypovolemia. Patients with SIAD exhibited a volemic expansion that was associated with hypercalciuria. Calciuria was proportional to markers of volemia. INTRODUCTION: Chronic mild hyponatremia has been associated with bone demineralization of unknown mechanisms...
August 15, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28809929/pregnant-and-breastfeeding-women-a-priority-population-for-hiv-viral-load-monitoring
#5
Landon Myer, Shaffiq Essajee, Laura N Broyles, D Heather Watts, Maia Lesosky, Wafaa M El-Sadr, Elaine J Abrams
Landon Myer and colleagues discuss viral load monitoring for pregnant HIV-positive women and those breastfeeding; ART treatments can suppress viral load and are key to preventing transmission to the child.
August 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28809058/acylated-iridoids-and-rhamnopyranoses-from-premna-odorata-lamiaceae-as-novel-mesenchymal-epithelial-transition-factor-receptor-inhibitors-for-the-control-of-breast-cancer
#6
Abeer H Elmaidomy, Mohamed M Mohyeldin, Mostafa M Ibrahim, Hossam M Hassan, Elham Amin, Mostafa E Rateb, Mona H Hetta, Khalid A El Sayed
Phytochemical investigation of Premna odorata Blanco, Lamiaceae, leaves afforded three new acylated iridoid glycosides 1-3 and two new acylated rhamnopyranoses 9 and 10, in addition to ten known compounds. The structures of the new compounds were confirmed using extensive 1D and 2D NMR analysis. Molecular modeling study suggested the potential of the acylated rhamnopyranoses to bind at the c-Met kinase domain. Cell-free Z'-LYTE™ assay testing revealed the good c-Met phosphorylation inhibitory activity of 9, followed by 8, and 10, with IC50 values of 2...
August 15, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28808387/new-apigenin-glycoside-polyphenolic-constituents-anti-inflammatory-and-hepatoprotective-activities-of-gaillardia-grandiflora-and-gaillardia-pulchella-aerial-parts
#7
Fatma A Moharram, Rabab Abd El Moneim El Dib, Mohamed S Marzouk, Siham M El-Shenawy, Haitham A Ibrahim
BACKGROUND: Gaillardia grandiflora Hort. ex Van Houte and Gaillardia pulchella Foug are flowering plants widely cultivated in Egypt for their ornamental value. Previous reports demonstrated that sesquiterpene derivatives represent the major compounds in both species. Moreover, only few flavones were identified from genus Gaillardia and few studies on the cytotoxicity of G. pulchella were found. AIM OF THE STUDY: Investigation of the phenolic constituents of the aerial parts of both species and evaluation of their anti-inflammatory and hepatoprotective activities...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28807479/multifactorial-analyses-revealed-optimal-aquaculture-modalities-improving-husbandry-fitness-without-clear-effect-on-stress-and-immune-status-of-pikeperch-sander-lucioperca
#8
Sébastien Baekelandt, Baptiste Redivo, Syaghalirwa N M Mandiki, Thibaut Bournonville, Alexis Houndji, Benoît Bernard, Najlae El Kertaoui, Mélodie Schmitz, Pascal Fontaine, Jean-Noël Gardeur, Yannick Ledoré, Patrick Kestemont
High mortality and impairment in growth rate during pikeperch (Sander lucioperca) ongrowing are among the major bottlenecks for its development in aquaculture. These failures may be related to high stress responsiveness since the rearing conditions are not yet optimized for this species. The objectives were to characterize the stress and immunological responses of pikeperch to major aquaculture modalities, and to identify the optimal aquaculture conditions for improving its welfare status. In a screening experiment, eight factors considered as relevant for the welfare of pikeperch were compared in two modalities using a fractional multifactorial design (2(8-4))...
August 11, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28806994/patterns-of-locoregional-failure-following-post-operative-intensity-modulated-radiotherapy-to-oral-cavity-cancer-quantitative-spatial-and-dosimetric-analysis-using-a-deformable-image-registration-workflow
#9
Abdallah S R Mohamed, Andrew J Wong, Clifton D Fuller, Mona Kamal, Gary B Gunn, Jack Phan, William H Morrison, Beth M Beadle, Heath Skinner, Stephen Y Lai, Sean R Quinlan-Davidson, Abdelaziz M Belal, Ahmed G El-Gowily, Steven J Frank, David I Rosenthal, Adam S Garden
BACKGROUND: We sought to identify spatial/dosimetric patterns of failure for oral cavity cancer patients receiving post-operative IMRT (PO-IMRT). METHODS: Two hundred eighty-nine OCC patients receiving PO-IMRT were retrospectively reviewed from 2000 to 2012. Diagnostic CT documenting recurrence (rCT) was co-registered with planning CT (pCT) using a validated deformable image registration software. Manually segmented recurrent gross disease (rGTV) was deformed to co-registered pCTs...
August 15, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28806701/application-of-different-spectrophotometric-methods-for-simultaneous-determination-of-elbasvir-and-grazoprevir-in-pharmaceutical-preparation
#10
Khalid A M Attia, Nasr M El-Abasawi, Ahmed El-Olemy, Ahmed H Abdelazim
The first three UV spectrophotometric methods have been developed of simultaneous determination of two new FDA approved drugs namely; elbasvir and grazoprevir in their combined pharmaceutical dosage form. These methods include simultaneous equation, partial least squares with and without variable selection procedure (genetic algorithm). For simultaneous equation method, the absorbance values at 369 (λmax of elbasvir) and 253nm (λmax of grazoprevir) have been selected for the formation of two simultaneous equations required for the mathematical processing and quantitative analysis of the studied drugs...
August 10, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28805821/opposing-effects-of-cancer-type-specific-spop-mutants-on-bet-protein-degradation-and-sensitivity-to-bet-inhibitors
#11
Hana Janouskova, Geniver El Tekle, Elisa Bellini, Namrata D Udeshi, Anna Rinaldi, Anna Ulbricht, Tiziano Bernasocchi, Gianluca Civenni, Marco Losa, Tanya Svinkina, Craig M Bielski, Gregory V Kryukov, Luciano Cascione, Sara Napoli, Radoslav I Enchev, David G Mutch, Michael E Carney, Andrew Berchuck, Boris J N Winterhoff, Russell R Broaddus, Peter Schraml, Holger Moch, Francesco Bertoni, Carlo V Catapano, Matthias Peter, Steven A Carr, Levi A Garraway, Peter J Wild, Jean-Philippe P Theurillat
It is generally assumed that recurrent mutations within a given cancer driver gene elicit similar drug responses. Cancer genome studies have identified recurrent but divergent missense mutations affecting the substrate-recognition domain of the ubiquitin ligase adaptor SPOP in endometrial and prostate cancers. The therapeutic implications of these mutations remain incompletely understood. Here we analyzed changes in the ubiquitin landscape induced by endometrial cancer-associated SPOP mutations and identified BRD2, BRD3 and BRD4 proteins (BETs) as SPOP-CUL3 substrates that are preferentially degraded by endometrial cancer-associated SPOP mutants...
August 14, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28804572/bacterial-infections-post-living-donor-liver-transplantation-in-egyptian-hepatitis-c-virus-cirrhotic-patients-a-single-center-study
#12
Mohamed F Montasser, Nadia A Abdelkader, Sara M Abdelhakam, Hany Dabbous, Iman F Montasser, Yasmine M Massoud, Waleed Abdelmoaty, Shereen A Saleh, Mohamed Bahaa, Hany Said, Mahmoud El-Meteini
AIM: To determine risk factors, causative organisms and antimicrobial resistance of bacterial infections following living-donor liver transplantation (LDLT) in cirrhotic patients. METHODS: This prospective study included 45 patients with hepatitis C virus-related end-stage liver disease who underwent LDLT at Ain Shams Center for Organ Transplant, Cairo, Egypt from January 2014 to November 2015. Patients were followed-up for the first 3 mo after LDLT for detection of bacterial infections...
July 18, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28804507/2017-update-of-the-wses-guidelines-for-emergency-repair-of-complicated-abdominal-wall-hernias
#13
REVIEW
Arianna Birindelli, Massimo Sartelli, Salomone Di Saverio, Federico Coccolini, Luca Ansaloni, Gabrielle H van Ramshorst, Giampiero Campanelli, Vladimir Khokha, Ernest E Moore, Andrew Peitzman, George Velmahos, Frederick Alan Moore, Ari Leppaniemi, Clay Cothren Burlew, Walter L Biffl, Kaoru Koike, Yoram Kluger, Gustavo P Fraga, Carlos A Ordonez, Matteo Novello, Ferdinando Agresta, Boris Sakakushev, Igor Gerych, Imtiaz Wani, Michael D Kelly, Carlos Augusto Gomes, Mario Paulo Faro, Antonio Tarasconi, Zaza Demetrashvili, Jae Gil Lee, Nereo Vettoretto, Gianluca Guercioni, Roberto Persiani, Cristian Tranà, Yunfeng Cui, Kenneth Y Y Kok, Wagih M Ghnnam, Ashraf El-Sayed Abbas, Norio Sato, Sanjay Marwah, Muthukumaran Rangarajan, Offir Ben-Ishay, Abdul Rashid K Adesunkanmi, Helmut Alfredo Segovia Lohse, Jakub Kenig, Stefano Mandalà, Raul Coimbra, Aneel Bhangu, Nigel Suggett, Antonio Biondi, Nazario Portolani, Gianluca Baiocchi, Andrew W Kirkpatrick, Rodolfo Scibé, Michael Sugrue, Osvaldo Chiara, Fausto Catena
Emergency repair of complicated abdominal wall hernias may be associated with worsen outcome and a significant rate of postoperative complications. There is no consensus on management of complicated abdominal hernias. The main matter of debate is about the use of mesh in case of intestinal resection and the type of mesh to be used. Wound infection is the most common complication encountered and represents an immense burden especially in the presence of a mesh. The recurrence rate is an important topic that influences the final outcome...
2017: World Journal of Emergency Surgery: WJES
https://www.readbyqxmd.com/read/28803697/tumor-necrosis-factor-alpha-gene-polymorphisms-and-haplotypes-in-egyptian-children-with-nephrotic-syndrome
#14
Doaa M Youssef, Amal S El-Shal, Samia Hussein, Khaled Salah, Abd El Rahman E Ahmed
BACKGROUND: Nephrotic syndrome (NS) characterized by complex pathogenesis and clinical course with relapses; and needs novel breakthroughs for decades. Polymorphisms of cytokines genes including tumor necrosis factor alpha (TNF-α)may influence susceptibility to NS as well as different patients' steroid responses. In the current study, we demonstrated the potential roles of TNF-α promoter gene polymorphisms [-238, -308, -863] and haplotypes in susceptibility to childhood NS. Also, elucidating their possible influence on patients' steroid response and serum TNF-α level...
August 10, 2017: Cytokine
https://www.readbyqxmd.com/read/28803411/electro-chemical-deposition-of-nano-hydroxyapatite-zinc-coating-on-titanium-metal-substrate
#15
N A El-Wassefy, F M Reicha, N S Aref
BACKGROUND: Titanium is an inert metal that does not induce osteogenesis and has no antibacterial properties; it is proposed that hydroxyapatite coating can enhance its bioactivity, while zinc can contribute to antibacterial properties and improve osseointegration. AIMS: A nano-sized hydroxyapatite-zinc coating was deposited on commercially pure titanium using an electro-chemical process, in order to increase its surface roughness and enhance adhesion properties...
August 13, 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28803043/structure-based-development-of-novel-triazoles-and-related-thiazolotriazoles-as-anticancer-agents-and-cdc25a-b-phosphatase-inhibitors-synthesis-in%C3%A2-vitro-biological-evaluation-molecular-docking-and-in-silico-adme-t-studies
#16
Sherif A F Rostom, Mona H Badr, Heba A Abd El Razik, Hayam M A Ashour
Synthesis of twenty nine new 1,2,4-triazoles and some derived thiazolothiadiazoles (structurally-relevant to some reported triazoles with anticancer and/or Cdc25A/B inhibitory activities) is described in this study. The obtained NCI's in vitro antitumor data revealed that five analogs (12, 15, 18, 19 and 22) displayed considerable tumor percentage growth inhibitory activity (GI%), among which the analog 18 possessed a special antitumor potential and spectrum. Additionally, the same five analogs showed a marginal GI effect on the normal breast epithelial cell line MCF-10A indicating higher selectivity towards cancer cells...
July 25, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28802821/association-of-sex-hormones-with-metabolic-syndrome-among-egyptian-males
#17
Iman Z Ahmed, Maram M Mahdy, Hussein El Oraby
BACKGROUND: Studies have shown that testosterone and estradiol (E2) are associated with metabolic syndrome (MetS). To our knowledge, few studies, if any about the association of endogenous sex hormones with MetS have been done in Egypt. AIM: To study the relation between endogenous sex hormones and MetS among Egyptian males. SUBJECTS AND METHOD: For the study, 80 Egyptian males were enrolled: 40 males with MetS and 40 healthy age-matched males...
August 5, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28802734/adding-markers-of-organ-damage-to-risk-score-models-improves-cardiovascular-risk-assessment-prospective-analysis-of-a-large-cohort-of-adult-outpatients
#18
Giuliano Tocci, Ilaria Figliuzzi, Vivianne Presta, Nadia Attalla El Halabieh, Barbara Citoni, Roberta Coluccia, Allegra Battistoni, Andrea Ferrucci, Massimo Volpe
INTRODUCTION: Global cardiovascular (CV) risk stratification is recommended in all outpatients. Risk score charts, however, do not include markers of organ damage (OD). AIM: To evaluate the potential added value of including different markers of subclinical OD to US Framingham, European SCORE and Italian Cuore risk score calculators. METHODS: We prospectively evaluated adult outpatients, who underwent blood pressure (BP) assessment and global CV risk stratification...
July 25, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28800856/-impact-of-mitral-annuloplasty-combined-with-surgical-revascularization-in-ischemic-mitral-regurgitation
#19
M Tribak, M Konaté, B Ould Hbib, P Konan, L Mahfoudi, A El Hassani, A Daouda, F Lachhab, N Bendagha, A Soufiani, J Fila, S Maghraoui, A Bensouda, L Marmade, S Moughil
INTRODUCTION: Ischemic Mitral Regurgitation (IMR) is a serious complication of coronary artery disease and is associated with a poor prognosis. The optimal surgical treatment of IMR involves controversies in its indications and modalities. OBJECTIVES: To determine whether mitral annuloplasty associated with surgical revascularization improved short and mid terms outcomes compared with revascularization alone in patients with IMR. METHODS: Between January 2007 and January 2011, 81 patients operated on Department of Cardiovascular Surgery "B" were included in this study divided into 3 groups...
August 8, 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/28800839/outcomes-of-intervention-for-cephalic-arch-stenosis-in-brachiocephalic-arteriovenous-fistulas
#20
Mark G Davies, Taylor D Hicks, George M Haidar, Hosam F El-Sayed
BACKGROUND: Development of recalcitrant stenotic lesions of the cephalic arch is a significant cause of dysfunction of brachiocephalic access arteriovenous fistulas (AVFs). Endovascular and surgical therapy can be used to treat cephalic arch stenosis. The aim of this study was to evaluate the outcomes of endovascular and surgical interventions for cephalic arch stenosis. METHODS: A retrospective review of all patients during a 16-year period with a compromised but not occluded brachiocephalic AVF due to cephalic arch stenosis was undertaken...
August 8, 2017: Journal of Vascular Surgery
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