keyword
MENU ▼
Read by QxMD icon Read
search

Ammar

keyword
https://www.readbyqxmd.com/read/27914001/subtilosin-prevents-biofilm-formation-by-inhibiting-bacterial-quorum-sensing
#1
Ammar Algburi, Saskia Zehm, Victoria Netrebov, Anzhelica B Bren, Vladimir Chistyakov, Michael L Chikindas
Subtilosin, the cyclic lantibiotic protein produced by Bacillus subtilis KATMIRA1933, targets the surface receptor and electrostatically binds to the bacterial cell membrane. In this study, subtilosin was purified using ammonium sulfate ((NH4)2SO4) precipitation and purified via column chromatography. Subtilosin's antibacterial minimum and sub-minimum inhibitory concentrations (MIC and sub-MIC) and anti-biofilm activity (biofilm prevention) were established. Subtilosin was evaluated as a quorum sensing (QS) inhibitor in Gram-positive bacteria using Fe(III) reduction assay...
December 2, 2016: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/27906045/smoking-is-associated-with-the-concurrent-presence-of-multiple-autoantibodies-in-rheumatoid-arthritis-rather-than-with-anti-citrullinated-protein-antibodies-per-se-a-multicenter-cohort-study
#2
Tineke J van Wesemael, Sofia Ajeganova, Jennifer Humphreys, Chikashi Terao, Ammar Muhammad, Deborah P M Symmons, Alex J MacGregor, Ingiäld Hafström, Leendert A Trouw, Annette H M van der Helm-van Mil, Tom W J Huizinga, Tsuneyo Mimori, René E M Toes, Fumihiko Matsuda, Björn Svensson, Suzanne M M Verstappen, Diane van der Woude
BACKGROUND: The contribution of smoking to rheumatoid arthritis (RA) is hypothesized to be mediated through formation of anti-citrullinated protein antibodies (ACPA). In RA, however, autoantibodies such as ACPA, rheumatoid factor (RF), and anti-carbamylated protein antibodies (anti-CarP) often occur together, and it is thus unclear whether smoking is specifically associated with some autoantibodies rather than others. We therefore investigated whether smoking is only associated with ACPA or with the presence of multiple RA-related autoantibodies...
December 1, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27902791/genome-wide-association-mapping-of-leaf-rust-response-in-a-durum-wheat-worldwide-germplasm-collection
#3
Meriem Aoun, Matthew Breiland, M Kathryn Turner, Alexander Loladze, Shiaoman Chao, Steven S Xu, Karim Ammar, James A Anderson, James A Kolmer, Maricelis Acevedo
Leaf rust (caused by Erikss. []) is increasingly impacting durum wheat ( L. var. ) production with the recent appearance of races with virulence to widely grown cultivars in many durum producing areas worldwide. A highly virulent race on durum wheat was recently detected in Kansas. This race may spread to the northern Great Plains, where most of the US durum wheat is produced. The objective of this study was to identify sources of resistance to several races from the United States and Mexico at seedling stage in the greenhouse and at adult stage in field experiments...
November 2016: Plant Genome
https://www.readbyqxmd.com/read/27900960/new-onset-diabetes-after-kidney-transplantation-incidence-risk-factors-and-outcomes
#4
Hassan Aleid, Ahmad Alhuraiji, Abdullah Alqaraawi, Ammar Abdulbaki, Mai Altalhi, Mohamed Shoukri, Eldali Abdelmoneim, Tariq Ali
Many patients develop new-onset diabetes after kidney transplantation (NODAT). Its incidence and epidemiology are unknown in the Saudi population. We aimed to study the incidence, epidemiology, and outcomes of kidney transplant recipients who developed NODAT. This is a retrospective study of all adults who received kidney transplant between January 2003 and December 2009. NODAT was defined according to the criteria outlined in the 2003 International Consensus guidelines. A total of 500 patients were included in this study, 54% were male patients...
November 2016: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/27895920/pd1-pd-l1-inhibition-as-a-potential-radiosensitizer-in-head-and-neck-squamous-cell-carcinoma-a-case-report
#5
Misako Nagasaka, Mark Zaki, Harold Kim, S Naweed Raza, George Yoo, Ho-Sheng Lin, Ammar Sukari
BACKGROUND: Immunotherapy targeting the checkpoint PD1 (programmed cell death protein 1) or PDL1 (programmed death ligand 1) has led to advances in the treatment of melanoma and non-small cell lung cancer (NSCLC). The use of such therapies has also been introduced into the treatment of other malignancies, including head and neck cancer. The combined effects of checkpoint inhibitors and anti-PD1(L1) antibodies and radiation therapy have not yet been sufficiently investigated. CASE PRESENTATION: We report a case of locally relapsed non-resectable oral cavity squamous cell carcinoma, with excellent local control after pembrolizumab (MK3475) followed by radiotherapy...
2016: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/27895373/percutaneous-ilio-sacral-screw-fixation-for-unstable-pelvic-ring-injuries
#6
Muhammad Suhail Amin, Muhammad Khurram Habib, Ammar Khalid
This prospective interventional study was planned to determine the clinical and radiological outcome of percutaneous iliosacral screw fixation for unstable pelvic ring injuries. It was conducted from March 2008 to June 2014 at the Department of Orthopaedic Surgery Combined Military Hospital (CMH) at Lahore, Multan, Rawalpindi and Muzaffarabad. It comprised 50 patients with unstable pelvic ring injuries. Visual analogue scale (VAS), Majeed pelvic score and Lindahl criteria were used for functional and radiological outcomes assessment...
October 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27895353/bacterobilia-in-acute-cholecystitis-bile-cultures-isolates-antibiotic-sensitivities-and-antibiotic-usage-a-study-on-a-pakistani-population
#7
Yousaf Bashir Hadi, Muhammad Waqas, Hafiz Muhammad Umer, Ammar Alam, Abdul Rehman Alvi, Muhammad Rizwan Khan
Acute cholecystitis is one of the most common acute surgical conditions. Laparoscopic cholecystectomy remains the mainstay of treatment. In patients managed non-operatively, antibiotics play an important role in the treatment of cholecystitis. The current retrospective observational study was conducted at a tertiary care hospital in Karachi, and comprised medical records of patients admitted between 2008 and 2014with acute cholecystitis and in whom bile cultures were obtained. Of the 509 patients with a mean age of 51...
October 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27895134/vancomycin-and-the-risk-of-aki-a-systematic-review-and-meta-analysis
#8
Abhisekh Sinha Ray, Ammar Haikal, Kassem A Hammoud, Alan S L Yu
BACKGROUND AND OBJECTIVES: Vancomycin has been in use for more than half a century, but whether it is truly nephrotoxic and to what extent are still highly controversial. The objective of this study was to determine the risk of AKI attributable to intravenous vancomycin. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: We conducted a systematic review of randomized, controlled trials and cohort studies that compared patients treated with intravenous vancomycin with a control group of patients given a comparator nonglycopeptide antibiotic and in which kidney function or kidney injury outcomes were reported...
November 28, 2016: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/27890707/novel-mutation-in-dock8-hies-with-severe-phenotype-and-successful-transplantation
#9
Latifa Al Shekaili, Farrukh Sheikh, Sulaiman Al Gazlan, Hasan Al Dhekri, Hamoud Al Mousa, Abdulaziz Al Ghonaium, Bander Al Saud, Saleh Al Mohsen, Agha M Rehan Khaliq, Safiah Al Sumayli, Mufarreh Al Zahrani, Anas Dababo, Ammar AlKawi, Abbas Hawwari, Rand Arnaout
BACKGROUND: Hyper-IgE syndrome (HIES) due to DOCK8 deficiency is an autosomal recessive (AR) primary combined immunodeficiency which results in significant morbidity and mortality at a young age. Different mutations in the DOCK8 gene can lead to variable severity of the disease. OBJECTIVE: We evaluated the genetic mutations in three related patients with severe clinical manifestations suggestive of AR HIES. We also explored whether treatment with stem cell transplantation could lead to complete disease resolution...
November 23, 2016: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/27890482/dietary-nitrate-does-not-affect-physical-activity-outcomes-in-health-older-adults-in-a-randomized-crossover-trial
#10
Mario Siervo, Clio Oggioni, Djordje G Jakovljevic, Michael Trenell, John C Mathers, David Houghton, Carlos Celis-Morales, Ammar W Ashor, Alan Ruddock, Mayur Ranchordas, Markos Klonizakis, Elizabeth A Williams
Although dietary nitrate (NO3(-)) ingestion appears to enhance exercise capacity and performance in young individuals, inconclusive findings have been reported in older people. Therefore, we conducted a double-blind, crossover randomized clinical trial using beetroot juice in older healthy participants, who were classified as normal weight and overweight. We tested whether consumption of beetroot juice (a rich source of NO3(-)) for 1 week would increase nitric oxide bioavailability via the nonenzymatic pathway and enhance (1) exercise capacity during an incremental exercise test, (2) physical capability, and (3) free-living physical activity...
November 14, 2016: Nutrition Research
https://www.readbyqxmd.com/read/27890365/protoscolicidal-and-immunomodulatory-activity-of-ziziphora-tenuior-extract-and-its-fractions
#11
Mojtaba Shahnazi, Abbas Azadmehr, Ammar Andalibian, Reza Hajiaghaee, Mehrzad Saraei, Mahmood Alipour
OBJECTIVE: To evaluate the scolicidal and immunomodulatory effect of the Ziziphora tenuior (Z. tenuior) extract and its fractions. METHODS: Protoscolices were treated with six concentrations (3, 5, 10, 25, 50, and 100 mg/mL) of Z. tenuior extract and its fractions (ethanol, petroleum ether, ethyl acetate and chloroform) in periods of 10, 20, 30, 40, 50 and 60 min, and viability of protoscolices was evaluated using the 1.0% eosin. To examine the immunomodulatory effects of Ziziphora and its fractions on macrophage cells, the non-toxic concentration of extract and different fractions determined by MTT assay, and the Griess reaction was used to measure the level of nitrite as an indicator of nitric oxide by the macrophage cells in 10, 100 and 200 μg/mL in 24 h at 37 °C...
November 2016: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/27889889/biosurfactant-production-by-the-crude-oil-degrading-stenotrophomonas-sp-b-2-chemical-characterization-biological-activities-and-environmental-applications
#12
Boutheina Gargouri, María Del Mar Contreras, Sonda Ammar, Antonio Segura-Carretero, Mohamed Bouaziz
In this work, biosurfactant-producing microorganisms were isolated from hydrocarbon-contaminated water collected from Tunisian oilfield. After enrichment and isolation, different bacterial strains were preliminary studied for their biosurfactant/bioemulsifier properties when using crude oil as the unique carbon source. In particular, the isolate strain B-2, a Gram-negative, rod-shaped bacterium, efficiently emulsified crude oil. The extracellular biosurfactant product from this strain presented an emulsification activity above 70% and a hydrophobicity of 71%...
November 26, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27888184/amnion-assisted-conjunctival-epithelial-redirection-in-limbal-stem-cell-grafting
#13
Harminder S Dua, Ammar Miri, Mohamed S Elalfy, Anna Lencova, Dalia G Said
AIMS: To develop a technique using amniotic membrane (AM) to prevent admixture of conjunctival epithelial cells and limbal explant-derived corneal epithelial cells in patients undergoing limbal stem cell transplantation. To compare this technique with the current method of 'sequential sector conjunctival epitheliectomy' (SSCE). METHODS: 26 patients with total limbal stem cell deficiency who underwent ocular surface reconstruction with limbal stem cells transplantation were retrospectively studied...
November 25, 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/27885893/tumor-vessel-relationships-in-pancreatic-ductal-adenocarcinoma-at-multidetector-ct-different-classification-systems-and-their-influence-on-treatment-planning
#14
Ahmed M Zaky, Christopher L Wolfgang, Matthew J Weiss, Ammar A Javed, Elliot K Fishman, Atif Zaheer
Treatment of pancreatic ductal adenocarcinoma (PDAC) remains a challenge, given its propensity for early systemic spread and growth into the adjacent vital vascular structures. With the advent of newer surgical techniques and chemoradiation therapies, multidetector computed tomography (CT) plays a crucial role in the identification of patients with borderline resectable disease who may benefit from such treatments. Stage III PDAC is divided into two categories-locally advanced, defined by arterial encasement or nonreconstructible portovenous axis involvement; and borderline resectable, defined by limited arterial involvement and/or reconstructible portovenous involvement...
November 25, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27883183/effect-of-nanoclay-concentration-level-on-the-electrical-properties-of-polypropylene-under-electron-irradiation-in-a-sem
#15
L Ben Ammar, S Fakhfakh, O Jbara, S Rondot
For studying the electrical properties (charge trapping, transport and secondary electron emission) of the polypropylene-based nanocomposites with different contents of natural clay, the specimens were submitted to electron irradiation of a scanning electron microscope. A device, suitably mounted on the sample holder of the scanning electron microscope, was used to measure two currents (i.e. leakage and displacement currents) induced in the polypropylene-based nanocomposites (polymer nanocomposites) under electron irradiation...
November 24, 2016: Journal of Microscopy
https://www.readbyqxmd.com/read/27879288/multi-omics-analysis-of-serum-samples-demonstrates-reprogramming-of-organ-functions-via-systemic-calcium-mobilization-and-platelet-activation-in-metastatic-melanoma
#16
Besnik Muqaku, Martin Eisninger, Samuel M Meier, Ammar Tahir, Tobias Prokop, Sebastian Haferkamp, Astrid Slany, Albrecht Reichle, Christopher Gerner
Pathophysiologies of cancer-associated syndroms such as cachexia are poorly understood and no routine biomarkers have been established, yet. Using shotgun proteomics, known marker molecules including PMEL, CRP, SAA and CSPG4 were found deregulated in patients with metastatic melanoma. Targeted analysis of 58 selected proteins with multiple reaction monitoring was applied for independent data verification. In three patients, two of which suffered from cachexia, a tissue damage signature was determined, consisting of nine proteins, PLTP, CD14, TIMP1, S10A8, S10A9, GP1BA, PTPRJ, CD44 and C4A, as well as increased levels of glycine and asparagine, and decreased levels of polyunsaturated phosphatidylcholine concentrations, as determined by targeted metabolomics...
November 22, 2016: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/27870560/effect-of-prenatal-versus-postnatal-vitamin-d-deficiency-on-pulmonary-structure-and-function-in-mice
#17
Ammar Saadoon, Namasivayam Ambalavanan, Kurt Zinn, Ambika P Ashraf, Mark MacEwen, Teodora Nicola, Michelle V Fanucchi, William T Harris
Epidemiologic studies have linked gestational vitamin D deficiency to respiratory diseases, although mechanisms have not been defined. We hypothesized that antenatal vitamin D deficiency would impair airway development and alveolarization in a mouse model. We studied the effect of antenatal vitamin D deficiency by inducing vitamin D deficiency in pregnant mice and then compared lung development and function in their offspring to littermate controls. Postnatal vitamin D deficiency and sufficiency models from each group were also studied...
November 21, 2016: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/27868455/identification-of-patients-at-risk-for-preeclampsia-with-the-use-of-uterine-artery-doppler-velocimetry-and-copeptin
#18
Ali Yeşil, Ammar Kanawati, Çağlar Helvacıoğlu, Cihan Kaya, Çağseli Göksu Özgün, Hüseyin Cengiz
PURPOSE: To investigate the relationship between maternal copeptin levels and uterine artery Doppler examination and progress of preeclampsia. MATERIALS AND METHODS: A cross-sectional study was designed with women those were screened at 20 + 0 - 24 + 6 weeks' gestation between May 2014 and August 2014. The obstetric records of all normotensive women were examined. Uterine artery Doppler velocimetry results and serum copeptin levels were measured. The patients were divided in two groups according to normal (n = 67) and abnormal uterine artery Doppler (n = 21) findings...
November 21, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27864170/control-of-biofilm-formation-antibiotics-and-beyond
#19
Ammar Algburi, Nicole Comito, Dimitri Kashtanov, Leon M T Dicks, Michael L Chikindas
Biofilm-associated bacteria are less sensitive to antibiotics than free-living (planktonic) cells. Furthermore, with variation in concentration of antibiotics throughout a biofilm, microbial cells are often exposed to levels below inhibitory concentrations and may develop resistance. This, and the irresponsible use of antibiotics, lead to the selection of pathogens that are difficult to eradicate. The Centers for Disease Control and Prevention use the terms "antibiotic" and "antimicrobial agents" interchangeably...
November 18, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27862658/a-double-blind-randomized-crossover-study-of-intravenous-infusion-of-magnesium-sulfate-versus-5-dextrose-on-depressive-symptoms-in-adults-with-treatment-resistant-depression
#20
Syed A Mehdi, Steven E Atlas, Sidra Qadir, Dominique Musselman, Sharon Goldberg, Judi M Woolger, Raul Corredor, Muhammad Hasnain Abbas, Leopoldo Arosemena, Simone Caccamo, Carmen Campbell, Ashar Farooqi, Jinrun Gao, Janet Konefal, Lucas C Lages, Laura Lantigua, Johanna Lopez, Vanessa Padilla, Ammar Rasul, Anna M Ray, Herbert Simões, Eduard Tiozzo, John E Lewis
AIM: Treatment-resistant depression patients are more likely to suffer from comorbid physical and mental disorders, experience marked and protracted functional impairment, and incur higher healthcare costs than non-affected individuals. Magnesium sulfate is a treatment option that may offer great potential for patients with treatment-resistant depression based on prior work in animals and humans. METHODS: Twelve subjects with mild or moderate treatment-resistant depression were randomized into a double-blind crossover trial to receive an infusion of 4 gram of magnesium sulfate in 5% dextrose or placebo infusion of 5% dextrose with a 5-day washout in between the 8-day intervention period...
November 10, 2016: Psychiatry and Clinical Neurosciences
keyword
keyword
107702
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"