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https://www.readbyqxmd.com/read/28523340/patient-and-surgical-characteristics-that-affect-revision-risk-in-dynamic-intraligamentary-stabilization-of-the-anterior-cruciate-ligament
#1
Philipp Henle, Kathrin S Bieri, Manuel Brand, Emin Aghayev, Jessica Bettfuehr, Janosch Haeberli, Martina Kess, Stefan Eggli
PURPOSE: Failure of dynamic intraligamentary stabilization (DIS) that requires revision surgery of the anterior cruciate ligament (ACL) has not been studied. The aim of this study was to investigate the incidence of revision ACL surgery, and the patient characteristics and surgery-related factors that are associated with an increased risk of ACL revision after DIS. METHODS: This study analysed a prospective, consecutively documented single-centre case series using standardized case report forms over a 2...
May 18, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28462928/erratum-setting-temporal-baselines-for-biodiversity-the-limits-of-available-monitoring-data-for-capturing-the-full-impact-of-anthropogenic-pressures
#2
Jean-Baptiste Mihoub, Klaus Henle, Nicolas Titeux, Lluís Brotons, Neil A Brummitt, Dirk S Schmeller
No abstract text is available yet for this article.
May 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28457645/toxicological-and-thermoregulatory-effects-of-feather-contamination-with-artificially-weathered-mc-252-oil-in-western-sandpipers-calidris-mauri
#3
Ivan Maggini, Lisa V Kennedy, Steven J Bursian, Karen M Dean, Alexander R Gerson, Kendal E Harr, Jane E Link, Chris A Pritsos, Karen L Pritsos, Christopher G Guglielmo
The external contamination of bird feathers with crude oil might have effects on feather structure and thus on thermoregulation. We tested the thermoregulatory ability of western sandpipers (Calidris mauri) in a respirometry chamber with oil applied either immediately prior, or three days before the experiment. The birds were then exposed to a sliding cold temperature challenge between 27°C and -3°C to calculate thermal conductance. After the experiment, a large blood sample was taken and the liver extracted to measure a range of parameters linked to toxicology and oxidative stress...
April 27, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28437467/mutant-uromodulin-expression-leads-to-altered-homeostasis-of-the-endoplasmic-reticulum-and-activates-the-unfolded-protein-response
#4
Céline Schaeffer, Stefania Merella, Elena Pasqualetto, Dejan Lazarevic, Luca Rampoldi
Uromodulin is the most abundant urinary protein in physiological conditions. It is exclusively produced by renal epithelial cells lining the thick ascending limb of Henle's loop (TAL) and it plays key roles in kidney function and disease. Mutations in UMOD, the gene encoding uromodulin, cause autosomal dominant tubulointerstitial kidney disease uromodulin-related (ADTKD-UMOD), characterised by hyperuricemia, gout and progressive loss of renal function. While the primary effect of UMOD mutations, retention in the endoplasmic reticulum (ER), is well established, its downstream effects are still largely unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28428858/genetic-diversity-and-spatial-structure-of-the-rufous-throated-antbird-gymnopithys-rufigula-an-amazonian-obligate-army-ant-follower
#5
Juliana Menger, Klaus Henle, William E Magnusson, Antonella Soro, Martin Husemann, Martin Schlegel
Amazonian understory antbirds are thought to be relatively sedentary and to have limited dispersal ability; they avoid crossing forest gaps, and even narrow roads through a forest may limit their territories. However, most evidence for sedentariness in antbirds comes from field observations and plot-based recapture of adult individuals, which do not provide evidence for lack of genetic dispersal, as this often occurs through juveniles. In this study, we used microsatellite markers and mitochondrial control-region sequences to investigate contemporary and infer historical patterns of genetic diversity and structure of the Rufous-throated Antbird (Gymnopithys rufigula) within and between two large reserves in central Amazonia...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28426631/directional-changes-in-tissue-reflectivity-may-influence-flow-detection-on-optical-coherence-tomography-angiography
#6
Rosa Dolz-Marco, K Bailey Freund
PURPOSE: To determine if directional or anatomical changes in tissue reflectivity of Henle fiber layer (HFL) may influence flow detection on optical coherence tomography angiography (OCT-A). METHODS: Cross-sectional analysis of consecutive cases undergoing OCT-A. Directional changes in visualization of HFL were either produced manually by moving the beam entrance within the pupil or observed occurring naturally because of tilting of the OCT line-scan within a myopic staphyloma...
April 19, 2017: Retina
https://www.readbyqxmd.com/read/28415841/unique-pattern-of-protein-bound-maillard-reaction-products-in-manuka-leptospermum-scoparium-honey
#7
Michael Hellwig, Jana Rückriemen, Daniel Sandner, Thomas Henle
As a unique feature, honey from the New Zealand manuka tree (Leptospermum scoparium) contains substantial amounts of dihydroxyacetone (DHA) and methylglyoxal (MGO). Although MGO is a reactive intermediate in the Maillard reaction, very little is known about reactions of MGO with honey proteins. We hypothesized that the abundance of MGO should result in a particular pattern of protein-bound Maillard reaction products (MRPs) in manuka honey. A protein-rich high-molecular-weight fraction was isolated from 12 manuka and 8 non-manuka honeys and hydrolyzed enzymatically...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28407946/manuka-honey-leptospermum-scoparium-inhibits-jack-bean-urease-activity-due-to-methylglyoxal-and-dihydroxyacetone
#8
Jana Rückriemen, Oliver Klemm, Thomas Henle
Manuka honey (Leptospermum scoparium) exerts a strong antibacterial effect. Bacterial enzymes are an important target for antibacterial compounds. The enzyme urease produces ammonia and enables bacteria to adapt to an acidic environment. A new enzymatic assay, based on photometric detection of ammonia with ninhydrin, was developed to study urease activity. Methylglyoxal (MGO) and its precursor dihydroxyacetone (DHA), which are naturally present in manuka honey, were identified as jack bean urease inhibitors with IC50 values of 2...
September 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28402284/three-new-genera-of-rhinebothriidean-cestodes-from-stingrays-in-southeast-asia
#9
Janine N Caira, Claire J Healy, Fernando P L Marques, Kirsten Jensen
Three genera of rhinebothriideans, previously referred to as New genus 1, New genus 2 and New genus 4, are erected in the the Anthocephaliidae. New genus 1 is established as Divaricobothrium gen. n., with Divaricobothrium tribelum sp. n. as its type species; Echeneibothrium trifidum Shipley et Hornell, 1906 is transferred to the genus as Divaricobothrium trifidum (Shipley et Hornell, 1906) comb. n. This genus is unique among rhinebothriidean genera in bearing bothridia that are posteriorly deeply divided into two lobes with facial loculi but no apical sucker, and a vagina that extends to near the anterior margin of the proglottid...
April 4, 2017: Folia Parasitologica
https://www.readbyqxmd.com/read/28389525/the-role-of-renal-transporters-and-novel-regulatory-interactions-in-the-tal-that-control-blood-pressure
#10
Lesley A Graham, Anna Dominiczak, Nicholas R Ferreri
Hypertension (HTN), a major public health issue is currently the leading factor in the global burden of disease, where associated complications account for 9.4 million deaths worldwide every year (98). Excessive dietary salt intake is among the environmental factors that contribute to HTN, known as salt sensitivity. The heterogeneity of salt sensitivity and the multiple mechanisms that link high salt intake to increases in blood pressure are of upmost importance for therapeutic application. A continual increase in the kidney's reabsorption of sodium (Na+) relies on sequential actions at various segments along the nephron...
April 7, 2017: Physiological Genomics
https://www.readbyqxmd.com/read/28373577/parathyroid-hormone-controls-paracellular-ca-2-transport-in-the-thick-ascending-limb-by-regulating-the-tight-junction-protein-claudin14
#11
Tadatoshi Sato, Marie Courbebaisse, Noriko Ide, Yi Fan, Jun-Ichi Hanai, Jovana Kaludjerovic, Michael J Densmore, Quan Yuan, Hakan R Toka, Martin R Pollak, Jianghui Hou, Beate Lanske
Renal Ca(2+) reabsorption is essential for maintaining systemic Ca(2+) homeostasis and is tightly regulated through the parathyroid hormone (PTH)/PTHrP receptor (PTH1R) signaling pathway. We investigated the role of PTH1R in the kidney by generating a mouse model with targeted deletion of PTH1R in the thick ascending limb of Henle (TAL) and in distal convoluted tubules (DCTs): Ksp-cre;Pth1r(fl/fl) Mutant mice exhibited hypercalciuria and had lower serum calcium and markedly increased serum PTH levels. Unexpectedly, proteins involved in transcellular Ca(2+) reabsorption in DCTs were not decreased...
April 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28361319/making-a-kidney-organoid-using-the-directed-differentiation-of-human-pluripotent-stem-cells
#12
Minoru Takasato, Melissa H Little
An organoid can be defined as a three-dimensional organ-like structure formed from organ-specific progenitor cells. Organ progenitor cells were empirically found to self-organize three-dimensional tissues when they were aggregated and cultivated in vitro. While this nature power of progenitor cells has an amazing potential to recreate artificial organs in vitro, there had been difficulty to apply this technology to human organs due to the inaccessibility to human progenitor cells until human-induced pluripotent stem cell (hiPSC) was invented by Takahashi and Yamanaka in 2007...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28351042/intracellular-edema
#13
Raja Narayanan, Baruch D Kuppermann
The macula is predisposed to edema in various retinal conditions, even when the insult is remote from the macula. The various factors that may predispose the macula to edema include high metabolic activity, radial arrangement of the Henle's layer, lack of inner layers at the fovea, and lack of blood supply at the fovea. The edema is most pronounced in the outer plexiform layer (Henle's layer). Alteration in the blood-retinal barrier and ischemia cause disturbances in vascular permeability as well as with the function of Müller cells...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28329890/directional-oct-scans-of-the-macula-reveal-henle-fibre-layer-related-imaging-patterns
#14
G M Somfai, J Tian, D C DeBuc, H Gerding
No abstract text is available yet for this article.
April 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28327689/unusual-case-of-failure-to-thrive-type-iii-bartter-syndrome
#15
S Agrawal, K Subedi, P Ray, A Rayamajhi
Bartter syndrome Type III is a rare autosomal recessive disorder resulting from an inherited defect in the thick ascending limb of the loop of henle of the nephrons in kidney. The typical clinical manifestations in childhood are failure to thrive and recurrent episodes of vomiting. Typical laboratory findings which help in the diagnosis are hypokalemic metabolic alkalosis, hypomagnesemia and hypercalciuria. We report a case of Type III Bartter syndrome not responding to repeated conventional treatment of failure to thrive...
September 2016: Journal of Nepal Health Research Council
https://www.readbyqxmd.com/read/28275646/producing-tissue-specific-stem-cells-for-regeneration-how-yap-taz-may-prove-useful
#16
EDITORIAL
Steven J Henle, Brian A Link
No abstract text is available yet for this article.
2017: Stem Cell Investigation
https://www.readbyqxmd.com/read/28258571/aquaporins-in-urinary-system
#17
Yingjie Li, Weiling Wang, Tao Jiang, Baoxue Yang
Several aquaporin (AQP )-type water channels are expressed in kidney: AQP1 in the proximal tubule, thin descending limb of Henle, and vasa recta; AQP2 -6 in the collecting duct; AQP7 in the proximal tubule; AQP8 in the proximal tubule and collecting duct; and AQP11 in the endoplasmic reticulum of proximal tubule cells. AQP2 is the vasopressin-regulated water channel that is important in hereditary and acquired diseases affecting urine-concentrating ability. The roles of AQPs in renal physiology and transepithelial water transport have been determined using AQP knockout mouse models...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28253301/targeting-gene-expression-to-specific-cells-of-kidney-tubules-in-vivo-using-adenoviral-promoter-fragments
#18
Sumiyo Watanabe, Toru Ogasawara, Yoshifuru Tamura, Taku Saito, Toshiyuki Ikeda, Nobuchika Suzuki, Tatsuo Shimosawa, Shigeru Shibata, Ung-Il Chung, Masaomi Nangaku, Shunya Uchida
Although techniques for cell-specific gene expression via viral transfer have advanced, many challenges (e.g., viral vector design, transduction of genes into specific target cells) still remain. We investigated a novel, simple methodology for using adenovirus transfer to target specific cells of the kidney tubules for the expression of exogenous proteins. We selected genes encoding sodium-dependent phosphate transporter type 2a (NPT2a) in the proximal tubule, sodium-potassium-2-chloride cotransporter (NKCC2) in the thick ascending limb of Henle (TALH), and aquaporin 2 (AQP2) in the collecting duct...
2017: PloS One
https://www.readbyqxmd.com/read/28228405/inhibition-of-romk-blocks-macula-densa-tubuloglomerular-feedback-yet-causes-renal-vasoconstriction-in-anesthetized-rats
#19
Magali Araujo, William J Welch, Xiaoyan Zhou, Kathleen Sullivan, Shawn Walsh, Alexander Pasternak, Christopher S Wilcox
The Na+/K+/2Cl- cotransporter (NKCC2) on the loop of Henle is the site of action of furosemide. Since outer medullary potassium channel (ROMK) inhibitors prevent reabsorption by NKCC2, we tested the hypothesis that ROMK inhibition with a novel, selective ROMK inhibitor (Compound C) blocks tubuloglomerular feedback (TGF) and reduces vascular resistance. Loop perfusion of either ROMK inhibitor or furosemide caused dose-dependent blunting of TGF, but the response to furosemide was 10-fold more sensitive (IC50= 10-6M for furosemide and IC50=10-5M for Compound C)...
February 22, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28225774/environmental-characteristics-drive-variation-in-amazonian-understorey-bird-assemblages
#20
Juliana Menger, William E Magnusson, Marti J Anderson, Martin Schlegel, Guy Pe'er, Klaus Henle
Tropical bird assemblages display patterns of high alpha and beta diversity and, as tropical birds exhibit strong habitat specificity, their spatial distributions are generally assumed to be driven primarily by environmental heterogeneity and interspecific interactions. However, spatial distributions of some Amazonian forest birds are also often restricted by large rivers and other large-scale topographic features, suggesting that dispersal limitation may also play a role in driving species' turnover. In this study, we evaluated the effects of environmental characteristics, topographic and spatial variables on variation in local assemblage structure and diversity of birds in an old-growth forest in central Amazonia...
2017: PloS One
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