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https://www.readbyqxmd.com/read/28229140/partitioning-of-caffeine-in-lipid-bilayers-reduces-membrane-fluidity-and-increases-membrane-thickness
#1
Adree Khondker, Alexander Dhaliwal, Richard J Alsop, Jennifer Tang, Matilda Backholm, An-Chang Shi, Maikel C Rheinstädter
Caffeine is a small amphiphilic molecule, which is widely consumed as a stimulant to prevent fatigue, but is also used as a common drug adjuvant in modern medicine. Here, we show that caffeine interacts with unsaturated lipid membranes made of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC). By combining X-ray diffraction and molecular dynamics simulations, we present evidence that caffeine partitions in lipid membranes and locates at the head group-tail group interface of the bilayers. By attracting water molecules from neighboring lipid molecules, it leads to the formation of "water pockets", i...
February 23, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28196528/exploring-the-impact-of-financial-barriers-on-secondary-prevention-of-heart-disease
#2
Kirnvir K Dhaliwal, Kathryn King-Shier, Braden J Manns, Brenda R Hemmelgarn, James A Stone, David J T Campbell
BACKGROUND: Patients with coronary artery disease experience various barriers which impact their ability to optimally manage their condition. Financial barriers may result in cost related non-adherence to medical therapies and recommendations, impacting patient health outcomes. Patient experiences regarding financial barriers remain poorly understood. Therefore, we used qualitative methods to explore the experience of financial barriers to care among patients with heart disease. METHODS: We conducted a qualitative descriptive study of participants in Alberta, Canada with heart disease (n = 13) who perceived financial barriers to care...
February 14, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28182807/a-shocking-diagnosis
#3
REVIEW
Anbazhagan Prabhakaran, Gurpreet Dhaliwal, Christopher Robert-James Schilf, George H Caughey, James Pile
No abstract text is available yet for this article.
February 2017: Journal of Hospital Medicine: An Official Publication of the Society of Hospital Medicine
https://www.readbyqxmd.com/read/28182287/transthoracic-echocardiography-study-of-congenitally-corrected-transposition-of-the-great-arteries
#4
Amarjit Singh, Gurpreet Singh, Tejveer S Dhaliwal, Manpreet Singh
Congenitally corrected transposition of the great arteries (CCTGA) is a rare congenital heart defect, occurring in only 0.5% of patients exhibiting congenital heart defects. Because it is not seen in a routine transthoracic echocardiography (TTE) examination, CCTGA may be missed. The echocardiography diagnosis of CCTGA is difficult and not well explained in most textbooks. The present report provides key sonographic images that contribute to the diagnosis. In the present case, the patient had no prior history of heart disease...
February 9, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28182046/eculizumab-for-atypical-hemolytic-uremic-syndrome-in-india-first-report-from-india-and-the-challenges-faced
#5
S K Sethi, S Rohatgi, M A Dragon-Durey, V Raghunathan, M Dhaliwal, A Rawat, P Jha, S B Bansal, R Raina, V Kher
Much progress has been made in understanding the pathophysiology and treatment of atypical hemolytic uremic syndrome (aHUS). Plasma therapy is the mainstay of treatment for aHUS. The availability of the first effective anti-complement therapeutic agent, eculizumab, has dramatically changed the outlook of this disease. However, its use in clinical practice raises important questions, such as who should receive the drug, when to start such therapy, and is it safe to stop treatment once the disease is controlled...
January 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28159948/admission-to-undergraduate-and-postgraduate-medical-courses-looking-beyond-single-entrance-examinations
#6
Tejinder Singh, Jyoti Nath Modi, Vinay Kumar, Upreet Dhaliwal, Piyush Gupta, Rita Sood
In India, a single national level entrance examination for admission to undergraduate and postgraduate medical courses has been introduced. This is largely an effort towards alleviating financial corruption in admission process, improving logistics and ease of examination for students, and resource efficacy in conduction of examination. Unfortunately, the possible educational impact of such single high stakes examination has not been overtly discussed. A major handicap in doing so is the lack of documentation and analysis of our own experience with multiple entrance examinations over many years...
February 2, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28159947/producing-competent-doctors-the-art-and-science-of-teaching-clinical-skills
#7
Upreet Dhaliwal, Avinash Supe, Piyush Gupta, Tejinder Singh
For a doctor to provide medical care with competence, he must not only have knowledge but must also be able to translate that knowledge into action. It is his competence in clinical skills that will enable him to practice safely and effectively in the real world. To ensure acquisition of clinical skills, medical teachers must adopt teaching methods that prioritise observation, practice, feedback; and more practice. We try to elucidate the meaning of clinical skills, the challenges inherent in clinical skills training in India, training models that have shown success in practice and can be adopted in the Indian context, and various techniques to enhance skill-training, including the giving of feedback, which is a critically important component of skills development...
February 2, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28159882/my-favorite-person
#8
Upreet Dhaliwal
No abstract text is available yet for this article.
February 3, 2017: Medical Humanities
https://www.readbyqxmd.com/read/28156007/acute-effects-of-implantable-cardioverter-defibrillator-shocks-on-biomarkers-of-myocardial-injury-apoptosis-heart-failure-and-systemic-inflammation
#9
Jordan Brewster, Travis Sexton, Gary Dhaliwal, Richard Charnigo, Gustavo Morales, Kevin Parrott, Yousef Darrat, John Gurley, Susan Smyth, Claude S Elayi
BACKGROUND: ICD shocks are potentially associated with myocardial injury, altered hemodynamics, apoptosis and inflammatory signaling. Their precise cellular impact can be explored after defibrillation testing (DFT) via biomarkers. We evaluated changes in biomarkers after ICD shocks during DFT. METHODS: We prospectively enrolled outpatients presenting for first implantation of a cardiac device. Biomarkers indicative of myocardial injury, inflammation and apoptosis were measured before and after implantation, and compared between patients receiving DFT (DFT+) to those not (DFT-)...
February 3, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28152330/randomized-controlled-trial-on-effect-of-intermittent-early-versus-late-kangaroo-mother-care-on-human-milk-feeding-in-low-birth-weight-neonates
#10
Dhaarani Jayaraman, Kanya Mukhopadhyay, Anil Kumar Bhalla, Lakhbir Kaur Dhaliwal
BACKGROUND: Breastfeeding at discharge among sick low-birth-weight (LBW) infants is low despite counseling and intervention like kangaroo mother care (KMC). Research aim: The aim was to study the effects of early initiation of KMC on exclusive human milk feeding, growth, mortality, and morbidities in LBW neonates compared with late initiation of KMC during the hospital stay and postdischarge. METHODS: A randomized controlled trial was conducted in level 2 and 3 areas of a tertiary care neonatal unit over 15 months...
February 1, 2017: Journal of Human Lactation: Official Journal of International Lactation Consultant Association
https://www.readbyqxmd.com/read/28150188/customized-smartpeg-for-measurement-of-resonance-frequency-of-mini-dental-implants
#11
Jagjit Singh Dhaliwal, Rubens F Albuquerque, Ali Fakhry, Sukhbir Kaur, Jocelyne S Feine
BACKGROUND: One-piece narrow diameter implants (NDIs) have been recommended as "Single-tooth replacements in the anterior zones, single posterior, multiple-unit fixed dental prosthesis (FDP), edentulous jaws to be rehabilitated with FDP, and edentulous jaws rehabilitation with overdentures in situations with reduced mesiodistal space or reduced ridge width." (ITI consensus 2013). Since NDIs can be immediately loaded, it is important to be able to carry out stability testing. We developed and validated a customized SmartPeg for this type of implant to measure the Implant Stability Quotient (ISQ)...
December 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28145952/patient-and-radiographic-factors-help-to-predict-metal-on-metal-hip-resurfacings-with-evidence-of-a-pseudotumor
#12
Gulraj S Matharu, Oliver Blanshard, Kawaljit Dhaliwal, Andrew Judge, David W Murray, Hemant G Pandit
BACKGROUND: The role of radiographs in the follow-up of patients with metal-on-metal hip resurfacing (MoMHR) implants is unclear. We investigated whether a combination of patient and radiographic factors predicted MoMHRs with evidence of a pseudotumor. METHODS: We performed a retrospective single-center case-control study of 384 MoMHRs. The pseudotumor group of 130 hips all had evidence of a symptomatic pseudotumor on cross-sectional imaging, with the diagnosis confirmed at revision...
February 1, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28129448/differential-regulation-of-sphingolipid-metabolism-in-plasma-hippocampus-and-cerebral-cortex-of-mice-administered-sphingolipid-modulating-agents
#13
Corey Giles, Ryusuke Takechi, Natalie A Mellett, Peter J Meikle, Satvinder Dhaliwal, John C Mamo
Accumulation of ceramide is implicated in mediating the cellular responses to stress and aberrant sphingolipid metabolism is frequently associated with metabolic and neurodegenerative diseases. It is often assumed that (1) peripheral disturbances in sphingolipid concentrations are reflective of processes occurring in the brain, or (2) circulating sphingolipids directly influence cerebral sphingolipid abundance. In order to address these assumptions, this study explores, in a physiological system, the metabolic pathways regulating sphingolipid metabolism in the brain and plasma of mice...
January 27, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28128512/abnormal-mismatch-repair-and-other-clinicopathologic-predictors-of-poor-response-to-progestin-treatment-in-young-women-with-endometrial-complex-atypical-hyperplasia-and-well-differentiated-endometrial-adenocarcinoma-a-consecutive-case-series
#14
M Zakhour, J G Cohen, A Gibson, A E Walts, B Karimian, A Baltayan, C Aoyama, L Garcia, S K Dhaliwal, D Elashoff, M Amneus, C Walsh
OBJECTIVE: To report the response to progestin therapy in young women with endometrial complex atypical hyperplasia (CAH) or FIGO grade 1 endometrial adenocarcinoma (FIGO 1 EAC) based on clinicopathologic features, including abnormal DNA mismatch repair (MMR) by immunohistochemistry (IHC). DESIGN: Consecutive case series. SETTING: Olive View-UCLA Medical Center in Sylmar, CA, USA, and Cedars-Sinai Medical Center in Los Angeles, CA, USA. POPULATION: Women ≤55 years old with CAH or FIGO 1 EAC...
January 27, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28104707/improving-care-standards-for-patients-with-spinal-trauma-combining-a-modified-e-delphi-process-and-stakeholder-interviews-a-study-protocol
#15
Lisa N Sharwood, Ralph Stanford, James W Middleton, Brian Burns, Anthony Joseph, Oliver Flower, Oran Rigby, Jonathon Ball, Shelly Dhaliwal
INTRODUCTION: Around 300 people sustain a new traumatic spinal cord injury (TSCI) in Australia each year; a relatively low incidence injury with extremely high long-term associated costs. Care standards are inconsistent nationally, lacking in consensus across important components of care such as prehospital spinal immobilisation, timing of surgery and timeliness of transfer to specialist services. This study aims to develop 'expertly defined' and agreed standards of care across the majority of disciplines involved for these patients...
January 19, 2017: BMJ Open
https://www.readbyqxmd.com/read/28101415/endoscopic-sensing-of-alveolar-ph
#16
D Choudhury, M G Tanner, S McAughtrie, F Yu, B Mills, T R Choudhary, S Seth, T H Craven, J M Stone, I K Mati, C J Campbell, M Bradley, C K I Williams, K Dhaliwal, T A Birks, R R Thomson
Previously unobtainable measurements of alveolar pH were obtained using an endoscope-deployable optrode. The pH sensing was achieved using functionalized gold nanoshell sensors and surface enhanced Raman spectroscopy (SERS). The optrode consisted of an asymmetric dual-core optical fiber designed for spatially separating the optical pump delivery and signal collection, in order to circumvent the unwanted Raman signal generated within the fiber. Using this approach, we demonstrate a ~100-fold increase in SERS signal-to-fiber background ratio, and demonstrate multiple site pH sensing with a measurement accuracy of ± 0...
January 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28096209/use-of-mixed-methods-research-in-research-on-coronary-artery-disease-diabetes-mellitus-and-hypertension-a-scoping-review
#17
David J T Campbell, Helen Tam-Tham, Kirnvir K Dhaliwal, Braden J Manns, Brenda R Hemmelgarn, Claudia Sanmartin, Kathryn King-Shier
BACKGROUND: Mixed methods research, the use of both qualitative and quantitative methods within 1 program of study, is becoming increasingly popular to allow investigators to explore patient experiences (qualitative) and also measure outcomes (quantitative). Coronary artery disease and its risk factors are some of the most studied conditions; however, the extent to which mixed methods studies are being conducted in these content areas is unknown. We sought to comprehensively describe the characteristics of published mixed methods studies on coronary artery disease and major risk factors (diabetes mellitus and hypertension)...
January 2017: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/28076745/absolute-risk-of-cardiovascular-disease-events-and-blood-pressure-and-lipid-lowering-therapy-in-australia
#18
Satvinder S Dhaliwal, Timothy A Welborn
No abstract text is available yet for this article.
January 16, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28067913/impaired-h3k36-methylation-defines-a-subset-of-head-and-neck-squamous-cell-carcinomas
#19
Simon Papillon-Cavanagh, Chao Lu, Tenzin Gayden, Leonie G Mikael, Denise Bechet, Christina Karamboulas, Laurie Ailles, Jason Karamchandani, Dylan M Marchione, Benjamin A Garcia, Ilan Weinreb, David Goldstein, Peter W Lewis, Octavia Maria Dancu, Sandeep Dhaliwal, William Stecho, Christopher J Howlett, Joe S Mymryk, John W Barrett, Anthony C Nichols, C David Allis, Jacek Majewski, Nada Jabado
Human papillomavirus (HPV)-negative head and neck squamous cell carcinomas (HNSCCs) are deadly and common cancers. Recent genomic studies implicate multiple genetic pathways, including cell signaling, cell cycle and immune evasion, in their development. Here we analyze public data sets and uncover a previously unappreciated role of epigenome deregulation in the genesis of 13% of HPV-negative HNSCCs. Specifically, we identify novel recurrent mutations encoding p.Lys36Met (K36M) alterations in multiple H3 histone genes...
January 9, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28045119/the-molecular-structure-of-human-red-blood-cell-membranes-from-highly-oriented-solid-supported-multi-lamellar-membranes
#20
Sebastian Himbert, Richard J Alsop, Markus Rose, Laura Hertz, Alexander Dhaliwal, Jose M Moran-Mirabal, Chris P Verschoor, Dawn M E Bowdish, Lars Kaestner, Christian Wagner, Maikel C Rheinstädter
We prepared highly oriented, multi-lamellar stacks of human red blood cell (RBC) membranes applied on silicon wafers. RBC ghosts were prepared by hemolysis and applied onto functionalized silicon chips and annealed into multi-lamellar RBC membranes. High resolution X-ray diffraction was used to determine the molecular structure of the stacked membranes. We present direct experimental evidence that these RBC membranes consist of nanometer sized domains of integral coiled-coil peptides, as well as liquid ordered (lo) and liquid disordered (ld) lipids...
January 3, 2017: Scientific Reports
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