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https://www.readbyqxmd.com/read/29042286/protein-kinase-and-lipase-inhibitors-of-inositide-metabolism-deplete-ip7-indirectly-in-pancreatic-%C3%AE-cells-off-target-effects-on-cellular-bioenergetics-and-direct-effects-on-ip6k-activity
#1
Subu Surendran Rajasekaran, Christopher Illies, Stephen B Shears, Huanchen Wang, Thais S Ayala, Joilson O Martins, Elisabetta Daré, Per-Olof Berggren, Christopher J Barker
Inositol pyrophosphates have emerged as important regulators of many critical cellular processes from vesicle trafficking and cytoskeletal rearrangement to telomere length regulation and apoptosis. We have previously demonstrated that 5-di-phosphoinositol pentakisphosphate, IP7, is at a high level in pancreatic β-cells and is important for insulin exocytosis. To better understand IP7 regulation in β-cells, we used an insulin secreting cell line, HIT-T15, to screen a number of different pharmacological inhibitors of inositide metabolism for their impact on cellular IP7...
October 14, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/29024402/blueberry-metabolites-attenuate-lipotoxicity-induced-endothelial-dysfunction
#2
Divya Bharat, Rafaela Ramos Mororo Cavalcanti, Chrissa Petersen, Nathan Begaye, Brett Ronald Cutler, Marcella Melo Assis Costa, Renata Kelly Luna Gomes Ramos, Marina Ramos Ferreira, Youyou Li, Leena P Bharath, Emma Toolson, Paul Sebahar, Ryan E Looper, Thunder Jalili, Namakkal S Rajasekaran, Zhenquan Jia, J David Symons, Anandh Babu Pon Velayutham
SCOPE: Lipotoxicity-induced endothelial dysfunction is an important vascular complication associated with diabetes. Clinical studies support the vascular benefits of blueberry anthocyanins, but the underlying mechanism is unclear. We tested the hypothesis that metabolites of blueberry anthocyanins attenuate lipotoxicity-induced endothelial dysfunction. METHODS AND RESULTS: Human aortic endothelial cells (HAECs) were treated for 6 h with either: (i) the parent anthocyanins (malvidin-3-glucoside and cyanidin-3-glucoside); or (ii) the blueberry metabolites (hydroxyhippuric acid, hippuric acid, benzoic acid-4-sulfate, isovanillic acid-3-sulfate, and vanillic acid-4-sulfate), at concentrations known to circulate in humans following blueberry consumption...
October 12, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28989838/sacral-fractures-and-associated-injuries
#3
REVIEW
Ricardo Rodrigues-Pinto, Mark F Kurd, Gregory D Schroeder, Christopher K Kepler, James C Krieg, Jörg H Holstein, Carlo Bellabarba, Reza Firoozabadi, F Cumhur Oner, Frank Kandziora, Marcel F Dvorak, Conor P Kleweno, Luiz R Vialle, S Rajasekaran, Klause J Schnake, Alexander R Vaccaro
STUDY DESIGN: Literature review. OBJECTIVE: The aim of this review is to describe the injuries associated with sacral fractures and to analyze their impact on patient outcome. METHODS: A comprehensive narrative review of the literature was performed to identify the injuries associated with sacral fractures. RESULTS: Sacral fractures are uncommon injuries that result from high-energy trauma, and that, due to their rarity, are frequently underdiagnosed and mistreated...
October 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28986357/excess-omega-6-fatty-acids-influx-in-aging-drives-metabolic-dysregulation-electrocardiographic-alterations-and-low-grade-chronic-inflammation
#4
Vasundhara Kain, Kevin A Ingle, Maureen Kachman, Heidi Baum, Gobinath Shanmugam, Namakkal S Rajasekaran, Martin E Young, Ganesh V Halade
Maintaining a balance of omega-6 and -3 fatty acids is essential for cardiac health. Current omega-6 and omega-3 fatty acids in the American diet has shifted from the ideal ratio of 2:1 to almost 20:1, while there is a body of evidence suggest the negative impact of such a shift in younger organisms, the underlying age-related metabolic signaling in response to the excess influx of omega-6 is incompletely understood. In the current study, young (6-month-old) and aging (≥18-month-old) mice were fed for two months with omega-6 enriched diet...
October 6, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28923309/altered-penile-caveolin-expression-in-diabetes-potential-role-in-erectile-dysfunction
#5
Jay Parikh, Alice Zemljic-Harpf, Johnny Fu, Dimosthenis Giamouridis, Tung-Chin Hsieh, Adam Kassan, Karnam S Murthy, Valmik Bhargava, Hemal H Patel, M Raj Rajasekaran
BACKGROUND: The pathophysiology of increased severity of erectile dysfunction in men with diabetes and their poor response to oral pharmacotherapy are unclear. Defective vascular endothelium and consequent impairment in the formation and action of nitric oxide (NO) are implicated as potential mechanisms. Endothelial NO synthase, critical for NO generation, is localized to caveolae, plasma membrane lipid rafts enriched in structural proteins, and caveolins. Type 2 diabetes mellitus (T2DM)-induced changes in caveolin expression are recognized to play a role in cardiovascular dysfunction...
October 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28918873/use-of-ganga-hospital-open-injury-severity-scoring-for-determination-of-salvage-versus-amputation-in-open-type-iiib-injuries-of-lower-limbs-in-children-an-analysis-of-52-type-iiib-open-fractures
#6
K Venkatadass, Tarani Sai Prasanth Grandhi, S Rajasekaran
INTRODUCTION AND AIMS: Open injuries in children are rare compared to adults. In children with major open injuries, there is no specific scoring system to guide when to amputate or salvage the limb. The use of available adult scoring systems may lead to errors in management. The role of Ganga Hospital Open Injury Severity Scoring (GHOISS) for open injuries in adults is well established and its applicability for pediatric open injuries has not been studied. This study was done to analyse the usefulness of GHOISS in pediatric open injuries and to compare it with MESS(Mangled Extremity Severity Score)...
September 12, 2017: Injury
https://www.readbyqxmd.com/read/28900744/structural-vertebral-endplate-nomenclature-and-etiology-a-study-by-the-issls-spinal-phenotype-focus-group
#7
Uruj Zehra, Cora Bow, Jeffrey C Lotz, Frances M K Williams, S Rajasekaran, Jaro Karppinen, Keith D K Luk, Michele C Battiê, Dino Samartzis
PURPOSE: Vertebral endplate abnormalities may be associated with disc degeneration and, perhaps, pain generation. However, consensus definitions for endplate findings on spine MRI do not exist, posing a challenge to compare findings between studies and ethnic groups. The following survey was created to characterize the variability among the global spine community regarding endplate structural findings with respect to nomenclature and etiology. METHODS: A working group within the International Society for the Study of the Lumbar Spine (ISSLS) Spinal Phenotype Focus Group was established to assess the endplate phenotype...
September 12, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28879874/diffusion-tensor-imaging-in-spinal-pathology-a-robust-investigative-tool-in-clinical-practice
#8
Rishi M Kanna, S Rajasekaran
No abstract text is available yet for this article.
September 2017: Neurology India
https://www.readbyqxmd.com/read/28768233/identification-of-transcriptome-signature-for-myocardial-reductive-stress
#9
Justin M Quiles, Madhusudhanan Narasimhan, Timothy Mosbruger, Gobinath Shanmugam, David Crossman, Namakkal S Rajasekaran
The nuclear factor erythroid 2 like 2 (Nfe2l2/Nrf2) is a master regulator of antioxidant gene transcription. We recently identified that constitutive activation of Nrf2 (CaNrf2) caused reductive stress (RS) in the myocardium. Here we investigate how chronic Nrf2 activation alters myocardial mRNA transcriptome in the hearts of CaNrf2 transgenic (TG-low and TG-high) mice using an unbiased integrated systems approach and next generation RNA sequencing followed by qRT-PCR methods. A total of 246 and 1031 differentially expressed genes (DEGs) were identified in the heart of TGL and TGH in relation to NTG littermates at ~ 6 months of age...
October 2017: Redox Biology
https://www.readbyqxmd.com/read/28713109/comparative-evaluation-of-neem-mouthwash-on-plaque-and-gingivitis-a-double-blind-crossover-study
#10
Md Jalaluddin, U B Rajasekaran, Sam Paul, R S Dhanya, C B Sudeep, V J Adarsh
AIM: The present study aimed at evaluating the impact of neem-containing mouthwash on plaque and gingivitis. MATERIALS AND METHODS: This randomized, double-blinded, crossover clinical trial included 40 participants aged 18 to 35 years with washout period of 1 week between the crossover phases. A total of 20 participants, each randomly allocated into groups I and II, wherein in the first phase, group I was provided with 0.2% chlorhexidine gluconate and group II with 2% neem mouthwash...
July 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28673258/differential-regulation-of-mirna-and-mrna-expression-in-the-myocardium-of-nrf2-knockout-mice
#11
Justin M Quiles, Madhusudhanan Narasimhan, Gobinath Shanmugam, Brett Milash, John R Hoidal, Namakkal S Rajasekaran
No abstract text is available yet for this article.
July 3, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28630898/polymeric-lithography-editor-editing-lithographic-errors-with-nanoporous-polymeric-probes
#12
Pradeep Ramiah Rajasekaran, Chuanhong Zhou, Mallika Dasari, Kay-Obbe Voss, Christina Trautmann, Punit Kohli
A new lithographic editing system with an ability to erase and rectify errors in microscale with real-time optical feedback is demonstrated. The erasing probe is a conically shaped hydrogel (tip size, ca. 500 nm) template-synthesized from track-etched conical glass wafers. The "nanosponge" hydrogel probe "erases" patterns by hydrating and absorbing molecules into a porous hydrogel matrix via diffusion analogous to a wet sponge. The presence of an interfacial liquid water layer between the hydrogel tip and the substrate during erasing enables frictionless, uninterrupted translation of the eraser on the substrate...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28630841/bipolar-hemiarthroplasty-in-a-patient-with-above-knee-amputation-surgical-technique
#13
Ramesh Perumal, Santhosh Ram Gaddam, J Vasudeva, J Dheenadhayalan, S Rajasekaran
INTRODUCTION: Femoral neck fractures are a common occurrence in lower limb amputees. Good post-operative results of hip hemiarthroplasty have been described in below-knee amputees. However, to our knowledge, very few such cases have been reported in above-knee amputees. CASE REPORT: We present a case of a 75-year-old male patient who underwent above-knee amputation of the right lower limb for severe crush injury right leg and a bipolar hemiarthroplasty for an ipsilateral fracture neck of femur sustained in the same road traffic accident...
January 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28566787/acute-flaccid-paraparesis-cauda-equina-syndrome-in-a-patient-with-bardet-biedl-syndrome
#14
Vibhu Krishnan Viswanathan, Rishi Mugesh Kanna, Ajoy Prasad Shetty, S Rajasekaran
Bardet-Biedl syndrome (BBS) is a rare, autosomal-recessive, debilitating genetic disorder, which can present with multitudinous systemic clinical features including rod-cone dystrophy, polydactyly, Frohlich-like central obesity, mental retardation, hypogonadism, and renal anomalies. Diverse neuromuscular manifestations in patients afflicted by this heterogeneous disorder include ataxia, cervical, and thoracic canal stenoses, presenting as spastic quadriparesis and other gait disturbances. We report a young patient with BBS, who had presented with acute flaccid paraparesis due to severe primary lumbar canal stenosis...
May 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28515695/chronic-endurance-exercise-impairs-cardiac-structure-and-function-in-middle-aged-mice-with-impaired-nrf2-signaling
#15
Gobinath Shanmugam, Madhusudhanan Narasimhan, Robbie L Conley, Thiagarajan Sairam, Ashutosh Kumar, Ronald P Mason, Ramalingam Sankaran, John R Hoidal, Namakkal S Rajasekaran
Nuclear factor erythroid 2 related factor 2 (Nrf2) signaling maintains the redox homeostasis and its activation is shown to suppress cardiac maladaptation. Earlier we reported that acute endurance exercise (2 days) evoked antioxidant cytoprotection in young WT animals but not in aged WT animals. However, the effect of repeated endurance exercise during biologic aging (WT) characterized by an inherent deterioration in Nrf2 signaling and pathological aging (pronounced oxidative susceptibility-Nrf2 absence) in the myocardium remains elusive...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28507966/ipsilateral-hip-and-knee-dislocation-with-open-tibial-fracture-a-case-report-of-a-limb-threatening-injury
#16
Ramesh Perumal, S R Sundararajan, J Vasudeva, S Rajasekaran
INTRODUCTION: Hip or knee dislocations are usually treated as a surgical emergency, but ipsilateral hip and knee dislocation should be considered a dual emergency that must be addressed immediately and reduced at the earliest. We present here the sequence of events and the final functional outcome of one such rare injury manages by us. CASE REPORT: A 22-year-old male was involved in a road traffic accident. He presented to the emergency department in 4 h injury time with painful deformities of the right hip and knee, along with Type I open wound right leg with abnormal mobility suggestive of fracture in the ipsilateral leg...
November 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28484883/delayed-chance-fracture-pattern-injury-in-a-case-of-skeletal-fluorosis
#17
Srikanth Reddy Dumpa, Siddharth N Aiyer, Sreekanth Reddy Rajoli, Ajoy Prasad Shetty, S Rajasekaran
PURPOSE: To document a rare complication of a delayed 'chance fracture pattern'-type injury through the proximal end of a pedicle screw construct in the clinical scenario of skeletal fluorosis. METHODS: A 72-year-old man with fluorosis presented following a fall which resulted in a T12-L1 fracture. Investigations revealed an unstable three-column injury, so the patient was treated with surgical stabilisation using pedicle screw fixation from T11 to L2. He presented 1 month following surgery with worsening back pain...
May 8, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28482326/constitutive-activation-of-nrf2-induces-a-stable-reductive-state-in-the-mouse-myocardium
#18
Gobinath Shanmugam, Madhusudhanan Narasimhan, Susan Tamowski, Victor Darley-Usmar, Namakkal S Rajasekaran
Redox homeostasis regulates key cellular signaling pathways in both physiology and pathology. The cell's antioxidant response provides a defense against oxidative stress and establishes a redox tone permissive for cell signaling. The molecular regulation of the well-known Keap1/Nrf2 system acts as sensor responding to changes in redox homeostasis and is poorly studied in the heart. Importantly, it is not yet known whether Nrf2 alone can serve as a master regulator of cellular redox homeostasis without compensation of the transcriptional regulation of antioxidant response element (ARE) genes through alternate mechanisms...
August 2017: Redox Biology
https://www.readbyqxmd.com/read/28368928/bilateral-avascular-necrosis-of-the-femoral-head-following-asynchronous-postictal-femoral-neck-fractures-a-case-report-and-review-of-the-literature
#19
K Venkatadass, M Avinash, S Rajasekaran
Bilateral avascular necrosis (AVN) following postictal bilateral fracture neck of the femur is a rare occurrence. Here, we report a case of bilateral AVN of the femoral head following an asynchronous bilateral postictal fracture neck of the femur. A 16-year-old autistic boy presented with left hip pain following an episode of seizures and radiographs showed Delbet type II fracture neck of the left femur. This was treated by closed reduction and cancellous screw fixation and skeletal traction for 6 weeks. At 3 months, follow-up radiograph showed union of the fracture, but he had developed segmental AVN with collapse of the head...
March 31, 2017: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/28368632/dynamical-stability-limit-for-the-charge-density-wave-in-k_-0-3-moo_-3
#20
R Mankowsky, B Liu, S Rajasekaran, H Y Liu, D Mou, X J Zhou, R Merlin, M Först, A Cavalleri
We study the response of the one-dimensional charge density wave in K_{0.3}MoO_{3} to different types of excitation with femtosecond optical pulses. We compare direct excitation of the lattice at midinfrared frequencies with injection of quasiparticles across the low energy charge density wave gap and with charge transfer excitation in the near infrared. For all three cases, we observe a fluence threshold above which the amplitude-mode oscillation frequency is softened and the mode becomes increasingly damped...
March 17, 2017: Physical Review Letters
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