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https://www.readbyqxmd.com/read/28340464/a-review-on-various-electrochemical-techniques-for-heavy-metal-ions-detection-with-different-sensing-platforms
#1
REVIEW
BabanKumar Bansod, Tejinder Kumar, Ritula Thakur, Shakshi Rana, Inderbir Singh
Heavy metal ions are non-biodegradable and contaminate most of the natural resources occurring in the environment including water. Some of the heavy metals including Lead (Pb), Mercury (Hg), Arsenic (As), Chromium (Cr) and Cadmium (Cd) are considered to be highly toxic and hazardous to human health even at trace levels. This leads to the requirement of fast, accurate and reliable techniques for the detection of heavy metal ions. This review presents various electrochemical detection techniques for heavy metal ions those are user friendly, low cost, provides on-site and real time monitoring as compared to other spectroscopic and optical techniques...
March 18, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28340075/a-rainbow-of-extra-tubes-useful-or-wasteful-practice
#2
Robert M Humble, Scott R Davis, Hermann G Hounkponou, Matthew D Krasowski
No abstract text is available yet for this article.
March 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28339550/the-tension-sensitive-ion-transport-activity-of-msl8-is-critical-for-its-function-in-pollen-hydration-and-germination
#3
Eric S Hamilton, Elizabeth S Haswell
All cells respond to osmotic challenges, including those imposed during normal growth and development. Mechanosensitive (MS) ion channels provide a conserved mechanism for regulating osmotic forces by conducting ions in response to increased membrane tension. We previously demonstrated that the MS ion channel MscS-Like 8 (MSL8) is required for pollen to survive multiple osmotic challenges that occur during the normal process of fertilization, and that it can inhibit pollen germination. However, it remained unclear whether these physiological functions required ion flux through a mechanically gated channel provided by MSL8...
January 10, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28338894/establishment-of-radiation-doses-for-pediatric-x-ray-examinations-in-a-large-pediatric-hospital-in-turkey
#4
T Olgar, T Sahmaran
Pediatric patients are more sensitive to ionizing radiation when compared with adults. The aim of this study was to evaluate the radiation doses for some common pediatric x-ray examinations performed with various digital radiography systems. Quality control tests of the digital radiography systems were carried out according to international published protocols before the pediatric dose measurements. Radiation dose measurement was performed by using the x-ray tube outputs and thermoluminescent dosimeter dose measurement methods...
February 25, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/28338823/transporters-involved-in-ph-and-k-homeostasis-affect-pollen-wall-formation-male-fertility-and-embryo-development
#5
Senthilkumar Padmanaban, Daniel D Czerny, Kara A Levin, Alexander R Leydon, Robert T Su, Timothy K Maugel, Yanjiao Zou, Salil Chanroj, Alice Y Cheung, Mark A Johnson, Heven Sze
Flowering plant genomes encode multiple cation/H+ exchangers (CHXs) whose functions are largely unknown. AtCHX17, AtCHX18, and AtCHX19 are membrane transporters that modulate K+ and pH homeostasis and are localized in the dynamic endomembrane system. Loss of function reduced seed set, but the particular phase(s) of reproduction affected was not determined. Pollen tube growth and ovule targeting of chx17chx18chx19 mutant pollen appeared normal, but reciprocal cross experiments indicate a largely male defect...
February 23, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28338577/weight-gain-after-veptr-surgery-may-be-from-nutritional-optimization-rather-than-improvement-in-pulmonary-function
#6
Ying Li, Maksim A Shlykov, Christopher B Robbins, Frances A Farley, Michelle S Caird, Michelle C Burke
STUDY DESIGN: Prospective comparative study. OBJECTIVE: To evaluate whether weight percentile (WP) increases after VEPTR insertion, and whether WP correlates with nutrition labs and pulmonary function. SUMMARY OF BACKGROUND DATA: Children with thoracic insufficiency syndrome (TIS) often have "failure to thrive" (WP ≤5). Previous authors have reported an increase in WP after VEPTR surgery. Weight gain was hypothesized to be secondary to improved pulmonary function...
March 23, 2017: Spine
https://www.readbyqxmd.com/read/28338517/improving-nutritional-support-of-burn-service-patients-by-increasing-the-number-of-days-when-100-of-prescribed-formula-is-given
#7
Peggie F Conrad, Julie Liberio, Razia Aleem, Marcia M Halerz, Michael J Mosier, Arthur P Sanford, Richard L Gamelli
The authors sought to increase the number of days when burn service patients receive 100% of prescribed enteral nutrition. The authors first performed a retrospective review of 37 patients (group 1) receiving enteral nutrition. The authors then created and implemented a nurse-directed feeding algorithm, placing patients into three age groups addressing maximum hourly infusion rates, high residual limits, initiating feeding, refeeding residuals, and replacing formula. The authors then performed a prospective review of 37 patients (group 2) fed utilizing the new algorithm...
March 21, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28338490/small-volume-injections-evaluation-of-volume-administration-deviation-from-intended-injection-volumes
#8
Matthew K Muffly, Michael I Chen, Rebecca E Claure, David R Drover, Bradley Efron, William L Fitch, Gregory B Hammer
BACKGROUND: In the perioperative period, anesthesiologists and postanesthesia care unit (PACU) nurses routinely prepare and administer small-volume IV injections, yet the accuracy of delivered medication volumes in this setting has not been described. In this ex vivo study, we sought to characterize the degree to which small-volume injections (≤0.5 mL) deviated from the intended injection volumes among a group of pediatric anesthesiologists and pediatric postanesthesia care unit (PACU) nurses...
March 23, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28338300/%C3%A2-separated-root-canal-instruments-%C3%A2-an-overview-of-incidence-localisation-treatment-strategies-and-outcome%C3%A2
#9
Beat Suter
The dreaded fracture of a root canal instrument is in fact a rare adverse event. Most instrument fractures occur in molar teeth with the highest degree of root curvature. Various treatment options (leaving the fractured instrument with or without apicoectomy, bypassing or removing the fragment) and removing techniques (using ultrasonics, hollow tubes or bypassing and removing with debriders) are discussed. The clinical prognosis for teeth with fractured instruments is not necessarily compromised if appropriate further treatment is undertaken...
March 24, 2017: Swiss Dental Journal
https://www.readbyqxmd.com/read/28338200/glioma-cells-promote-angiogenesis-through-the-release-of-exosomes-containing-long-non-coding-rna-pou3f3
#10
H-L Lang, G-W Hu, Y Chen, Y Liu, W Tu, Y-M Lu, L Wu, G-H Xu
OBJECTIVE: Angiogenesis is a key event in the progression of gliomas, and emerging evidence suggests that exosomes are signaling extracellular organelles that modulate the tumor microenvironment and promote angiogenesis and tumor progression. This study aimed to explore the mechanism by which glioma-derived exosomes affect angiogenesis. MATERIALS AND METHODS: qRT-PCR was used to determine the expression level of linc-POU3F3 in glioma tissue as well as glioma cell lines...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28338165/-clinical-efficacy-of-partial-resection-of-puborectalis-combined-with-mutilation-of-internal-anal-sphincter-in-the-treatment-of-puborectalis-syndrome-with-high-anal-pressure
#11
Hui Ye, Weicheng Liu, Qun Qian, Zhisu Liu, Congqing Jiang, Keyan Zheng, Qianbo Qin, Zhao Ding, Zhilin Gong
OBJECTIVE: To explore the efficacy of partial resection of puborectalis combined with mutilation of internal anal sphincter(IAS) in the treatment of puborectalis syndrome with high anal pressure. METHODS: Twenty-five cases of puborectalis syndrome with high anal resting pressure in the preoperative examination received the operation of partial resection of puborectalis combined with mutilation of IAS in Zhongnan Hospital of Wuhan University between January 2013 and May 2015...
March 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28338158/-diagnosis-and-treatment-of-duodenal-injury-and-fistula
#12
Kunmei Gong, Shikui Guo, Kunhua Wang
Duodenal injury is a serious abdominal organ injury. Duodenal fistula is one of the most serious complications in gastrointestinal surgery, which is concerned for its critical status, difficulty in treatment and high mortality. Thoracic and abdominal compound closed injury and a small part of open injury are common causes of duodenal injury. Iatrogenic or traumatic injury, malnutrition, cancer, tuberculosis, Crohn's disease etc. are common causes of duodenal fistula, however, there has been still lacking of ideal diagnosis and treatment by now...
March 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28337978/microrna-filters-hox-temporal-transcription-noise-to-confer-boundary-formation-in-the-spinal-cord
#13
Chung-Jung Li, Tian Hong, Ying-Tsen Tung, Ya-Ping Yen, Ho-Chiang Hsu, Ya-Lin Lu, Mien Chang, Qing Nie, Jun-An Chen
The initial rostrocaudal patterning of the neural tube leads to differential expression of Hox genes that contribute to the specification of motor neuron (MN) subtype identity. Although several 3' Hox mRNAs are expressed in progenitors in a noisy manner, these Hox proteins are not expressed in the progenitors and only become detectable in postmitotic MNs. MicroRNA biogenesis impairment leads to precocious expression and propagates the noise of Hoxa5 at the protein level, resulting in an imprecise Hoxa5-Hoxc8 boundary...
March 24, 2017: Nature Communications
https://www.readbyqxmd.com/read/28337902/helicobacter-pylori-in-periodontal-pockets-and-saliva-a-possible-role-in-gastric-infection-relapses
#14
L Azzi, F Carinci, S Gabaglio, F Cura, F Croveri, L Tettamanti, A Tagliabue, S Segato
It has been a long time since the scientific community started to speculate upon the presence of Helicobacter pylori (HP) in periodontal pockets as an extra-gastric reservoir responsible for gastric relapses after eradication therapy. The aim of this study is to evaluate the presence of oral HP in a group of patients who underwent examination for gastric infection. Sixty patients were enrolled in the current study, subdivided into two groups: 30 patients with a positive result for HP gastric infection with C-Breath Test Urea examination, and 30 patients with a negative result for HP gastric infection...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28337899/substance-p-expression-in-the-gingival-tissue-after-upper-third-molar-extraction-effect-of-ketoprofen-a-preliminary-study
#15
G M Abbate, A Mangano, P Sacerdote, G Amodeo, G Moschetti, L Levrini
The aim of this study was to evaluate substance P (SP) levels and the effect of a non-steroidal anti-inflammatory drug (NSAID), ketoprofen, on SP in the pericoronal gingival tissue after extraction of upper third molars. A sample of 20 young non-smoking systemically healthy adults of both sexes, with a healthy upper third molar to extract for orthodontic purposes, was selected. After extraction, a sample of the gingival tissue of the pericoronal region was collected with a sterile scalpel, placed into test tubes and kept frozen at -20°C until the SP determination...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28337443/urethral-reconstruction-using-mesothelial-cell-seeded-autogenous-granulation-tissue-tube-an-experimental-study-in-male-rabbits
#16
Shiwei Jiang, Zhonghua Xu, Yuanyuan Zhao, Lei Yan, Zunlin Zhou, Gangli Gu
Objective. This study was to evaluate the utility of the compound graft for tubularized urethroplasty by seeding mesothelial cells onto autogenous granulation tissue. Methods. Silastic tubes were implanted subcutaneously in 18 male rabbits, of which nine underwent omentum biopsies simultaneously for in vitro expansion of mesothelial cells. The granulation tissue covering the tubes was harvested 2 weeks after operation. Mesothelial cells were seeded onto and cocultured with the tissue for 7 days. A pendulous urethral segment of 1...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28337415/a-modification-of-the-constant-head-permeameter-to-measure-saturated-hydraulic-conductivity-of-highly-permeable-media
#17
Jelmer J Nijp, Klaas Metselaar, Juul Limpens, Harm P A Gooren, Sjoerd E A T M van der Zee
The saturated hydraulic conductivity (Ks ) is a key characteristic of porous media, describing the rate of water flow through saturated porous media. It is an indispensable parameter in a broad range of simulation models that quantify saturated and/or unsaturated water flow. The constant-head permeameter test is a common laboratory method to determine Ks on undisturbed soil samples collected from the field. In this paper we show that the application of this conventional method may result in a biased Ks in the case of highly permeable media, such as the top layer of Sphagnum peat and gravel...
2017: MethodsX
https://www.readbyqxmd.com/read/28337286/lps-induces-huvec-angiogenesis-in-vitro-through-mir-146a-mediated-tgf-%C3%AE-1-inhibition
#18
Yize Li, Huayu Zhu, Xu Wei, Heng Li, Zhicao Yu, Hongmei Zhang, Wenchao Liu
Angiogenesis is an essential process for tissue growth and embryo development. However, inflammation, abnormal wound healing, vascular diseases, and tumor development and progression can result from inappropriate angiogenesis. Lipopolysaccharide (LPS) can activate various cells and alter endothelium function and angiogenesis. This study investigated the underlying molecular events involved in LPS-induced angiogenesis and revealed a novel strategy for controlling abnormal angiogenesis. LPS treatment promoted wound healing and tube formation in human umbilical vein endothelial cell (HUVEC) cultures and induced their expression of miR-146a...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28337224/gut-mesenchymal-stromal-cells-in-immunity
#19
REVIEW
Valeria Messina, Carla Buccione, Giulia Marotta, Giovanna Ziccheddu, Michele Signore, Gianfranco Mattia, Rossella Puglisi, Benedetto Sacchetti, Livia Biancone, Mauro Valtieri
Mesenchymal stromal cells (MSCs), first found in bone marrow (BM), are the structural architects of all organs, participating in most biological functions. MSCs possess tissue-specific signatures that allow their discrimination according to their origin and location. Among their multiple functions, MSCs closely interact with immune cells, orchestrating their activity to maintain overall homeostasis. The phenotype of tissue MSCs residing in the bowel overlaps with myofibroblasts, lining the bottom walls of intestinal crypts (pericryptal) or interspersed within intestinal submucosa (intercryptal)...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28336393/contributions-of-%C3%AE-tubulin-to-cellular-morphology-sporulation-and-virulence-in-the-insect-fungal-pathogen-metarhizium-acridum
#20
Jie Zhang, Kai Jin, Yuxian Xia
β-tubulin is an elementary subunit of microtubules that form the cytoskeleton, participating in a wide range of cellular processes. The contributions of the single β-tubulin gene in affecting cell morphology, sporulation and virulence were examined in the entomopathogenic fungus Metarhizium acridum. Targeted gene knockout of β-tubulin resulted in resistance to benomyl but impaired proper nuclear segregation, lipid droplet transport, and deposition of chitin to the cell wall. M. acridum β-tubulin mutants displayed wavy hyphal growth and densely packed, wrinkled colonies...
March 20, 2017: Fungal Genetics and Biology: FG & B
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