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https://www.readbyqxmd.com/read/28640628/oriented-gold-nanorods-and-gold-nanorod-chains-within-smectic-liquid-crystal-topological-defects
#1
Brigita Rožič, Jérôme Fresnais, Celine Molinaro, Joseph Calixte, Shivakumar Umadevi, Stephanie Lau-Truong, Nordin Felidj, Tobias Kraus, Fabrice Charra, Vincent Dupuis, Torsten Hegmann, Celine Fiorini-Debuisschert, Bruno Gallas, Emmanuelle Lacaze
We show that the use of oriented linear arrays of smectic A defects, the so-called smectic oily streaks, enables the orientation of gold nanorods (GNRs) for a large range of GNR diameters, ranging from 7 to 48 nm, and for various ligands. For the small GNRs it enables oriented end-to-end small chains of GNRs when the density is increased from around 2 GNRs/μm(2) to around 6 GNRs/μm(2). We have characterized the orientation of single GNRs by spectrophotometry and two-photon luminescence (TPL). A strongly anisotropic absorption of the composites and an on-off switching of GNR luminescence, both controlled by incident light polarization, are observed, revealing an orientation of the GNRs mostly parallel to the oily streaks...
June 22, 2017: ACS Nano
https://www.readbyqxmd.com/read/28618177/assessing-the-quality-of-primary-care-referrals-to-surgery-of-patients-with-diabetes-in-the-east-of-england-a-multi-centre-cross-sectional-cohort-study
#2
Dimitri J Pournaras, Evangelos S Photi, Nicholas Barnett, Christopher P Challand, Nikolaos A Chatzizacharias, Nokwanda P Dlamini, Triantafyllos Doulias, Aoibhinn Foley, James Hernon, Bhaskar Kumar, Jack Martin, Ian Nunney, Ioanna Panagiotopoulou, Neel Sengupta, Oshini Shivakumar, Piriyah Sinclair, Phil Stather, Miriam M Than, Antonia C Wells, Athanasios Xanthis, Ketan Dhatariya
AIM: Peri-operative hyperglycaemia is associated with an increased incidence of adverse outcomes. Communication between primary and secondary care is paramount to minimise these harms. National guidance in the UK recommends that the glycated haemoglobin (HbA1c) should be measured within 3 months prior to surgery and that the concentration should be less that 69 mmol/mol (8.5%). In addition, national guidance outlines the minimum dataset that should be included in any letter at the time of referral to the surgeons...
June 15, 2017: International Journal of Clinical Practice
https://www.readbyqxmd.com/read/28615756/neurocognitive-impairments-in-unaffected-first-degree-relatives-of-schizophrenia
#3
Virupaksha Shanmugam Harave, Venkataram Shivakumar, Sunil V Kalmady, Janardhanan C Narayanaswamy, Shivarama Varambally, Ganesan Venkatasubramanian
BACKGROUND: Neurocognitive impairments of attention and executive functioning are trait abnormalities in schizophrenia, and these are considered to be endophenotypes. These deficits have been convincingly linked to prefrontal cortical functioning. In this study, we examined the cognitive performance in the domains of attention and executive functioning among first-degree relatives of Indian people with schizophrenia (high-risk [HR] patients) compared to healthy controls (HC). MATERIALS AND METHODS: Siblings of patients with DSM-IV schizophrenia, HR patients (n = 17), were compared with HC (n = 30) (matched as a group for age, sex, years of education, and handedness) using the following neurocognitive tests for attention and executive function - digit span test (DST), trail making test, letter-number sequencing (LNS), and spatial span test...
May 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/28608560/endocannabinoid-system-in-neurodegenerative-disorders
#4
REVIEW
Balapal S Basavarajappa, Madhu Shivakumar, Vikram Joshi, Shivakumar Subbanna
Most neurodegenerative disorders (NDDs) are characterized by cognitive impairment and other neurological defects. The definite cause of and pathways underlying the progression of these NDDs are not well defined. Several mechanisms have been proposed to contribute to the development of NDDs. These mechanisms may proceed concurrently or successively, and they differ among cell types at different developmental stages in distinct brain regions. The endocannabinoid system, which involves cannabinoid receptors type 1 (CB1R) and type 2 (CB2R), endogenous cannabinoids and the enzymes that catabolize these compounds, has been shown to contribute to the development of NDDs in several animal models and human studies...
June 13, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28602428/influence-of-amalaki-rasayana-on-telomerase-activity-and-telomere-length-in-human-blood-mononuclear-cells
#5
Kanive P Guruprasad, Sweta Dash, Marigowda B Shivakumar, Pavithra R Shetty, Kothanahalli S Raghu, Bhanuvalli R Shamprasad, Vishwanatha Udupi, Raviraj V Acharya, Prasanna B Vidya, Jayakrishna Nayak, Anandan E Mana, Rajesh Moni, Muraleedharan T Sankaran, Kapaettu Satyamoorthy
BACKGROUND: Indian traditional medicine practices use defined rasayana preparations to improve the quality of health in aged individuals. Amalaki Rasayana is one such rasayana prepared from the fruits of Phyllanthus emblica and is popularly used to prevent or treat various age related health conditions. Telomerase activity in the cells maintains telomere length and is implicated in ageing and various diseases wherein the shortening of telomere during ageing is controlled chiefly by the telomerase activity...
June 8, 2017: Journal of Ayurveda and Integrative Medicine
https://www.readbyqxmd.com/read/28600140/income-generated-by-women-treated-with-magnetic-resonance-imaging-based-brachytherapy-a-simulation-study-evaluating-the-macroeconomic-benefits-of-implementing-a-high-end-technology-in-a-public-sector-healthcare-setting
#6
Santam Chakraborty, Umesh Mahantshetty, Supriya Chopra, Shirley Lewis, Vinod Hande, Shivakumar Gudi, Rahul Krishnatry, Reena Engineer, Shyam Kishore Shrivastava
PURPOSE: To estimate the difference in income generated if all women presenting in our institute over a 5-year period were treated with MRI-based image-guided brachytherapy (MR-IGBT) instead of conventional radiograph-based brachytherapy (CR-BT). METHODS AND MATERIALS: Outcome data from 463 patients (94 treated with MR-IGBT) treated in our institute was used to simulate cumulative women-days of work and cumulative income over 5 years for 5526 patients expected to be treated in this period...
June 6, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28596037/development-and-evaluation-of-an-oral-fast-disintegrating-anti-allergic-film-using-hot-melt-extrusion-technology
#7
Manjeet B Pimparade, Anh Vo, Abhijeet S Maurya, Jungeun Bae, Joseph T Morott, Xin Feng, Dong Wuk Kim, Vijay I Kulkarni, Roshan Tiwari, K Vanaja, Reena Murthy, H N Shivakumar, D Neupane, S R Mishra, S N Murthy, Michael A Repka
The main objective of this novel study was to develop chlorpheniramine maleate orally disintegrating films (ODF) using hot-melt extrusion technology and evaluate the characteristics of the formulation using in vitro and in vivo methods. Modified starch with glycerol was used as a polymer matrix for melt extrusion. Sweetening and saliva-simulating agents were incorporated to improve palatability and lower the disintegration time of film formulations. A standard screw configuration was applied, and the last zone of the barrel was opened to discharge water vapors, which helped to manufacture non-sticky, clear, and uniform films...
June 5, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28589857/identification-of-epigenetic-interactions-between-mirna-and-dna-methylation-associated-with-gene-expression-as-potential-prognostic-markers-in-bladder-cancer
#8
Manu Shivakumar, Younghee Lee, Lisa Bang, Tullika Garg, Kyung-Ah Sohn, Dokyoon Kim
BACKGROUND: One of the fundamental challenges in cancer is to detect the regulators of gene expression changes during cancer progression. Through transcriptional silencing of critical cancer-related genes, epigenetic change such as DNA methylation plays a crucial role in cancer. In addition, miRNA, another major component of epigenome, is also a regulator at the post-transcriptional levels that modulate transcriptome changes. However, a mechanistic role of synergistic interactions between DNA methylation and miRNA as epigenetic regulators on transcriptomic changes and its association with clinical outcomes such as survival have remained largely unexplored in cancer...
May 24, 2017: BMC Medical Genomics
https://www.readbyqxmd.com/read/28567148/hip-abductor-strengthening-improves-physical-function-following-total-knee-replacement-one-year-follow-up-of-a-randomized-pilot-study
#9
Karvannan Harikesavan, Raj D Chakravarty, Arun G Maiya, Sanjay P Hegde, Shivakumar Y Shivanna
BACKGROUND: Total knee replacement (TKR) is the commonest surgical procedure for patients with severe pain and impaired physical function following end stage knee osteoarthritis. The hip abductors are well renowned in stabilization of the trunk and hip during walking, maintaining the lower limb position, and transferring the forces from the lower limbs to the pelvis. OBJECTIVE: To assess the efficacy of hip abductor strengthening exercise on functional outcome using performance based outcome measures following total knee replacement...
2017: Open Rheumatology Journal
https://www.readbyqxmd.com/read/28558892/functional-near-infra-red-spectroscopy-fnirs-in-schizophrenia-a-review
#10
REVIEW
Vijay Kumar, Venkataram Shivakumar, Harleen Chhabra, Anushree Bose, Ganesan Venkatasubramanian, Bangalore N Gangadhar
The research on the alterations in functional connectivity in schizophrenia has been facilitated by development of an array of functional neuroimaging techniques. Functional Near Infra Red Spectroscopy (fNIRS) is a novel diffuse optical neuromonitring method with its own advantages and limitations. The advantages of fNIRS have made it to be frequently used as a research tool by medical community in different settings. In fNIRS the property of haemoglobin to absorb near infrared light is used to measure brain activity...
June 2017: Asian Journal of Psychiatry
https://www.readbyqxmd.com/read/28557150/characterization-of-cd34-deficient-myofibroblastomas-of-the-breast
#11
Timothy M D'Alfonso, Shivakumar Subramaniyam, Paula S Ginter, Juan Miguel Mosquera, Jaclyn Croyle, Yi-Fang Liu, Mark A Rubin, Sandra J Shin
Mammary myofibroblastoma is a benign spindle cell tumor that can show variable morphologic patterns and lines of differentiation. Diffuse and strong immunohistochemical expression of CD34 is a characteristic of myofibroblastoma and greatly aids in confirming a diagnosis. Myofibroblastoma has been shown to belong to a family of CD34-positive tumors with similar morphology that show a deletion of 13q14, which includes RB1 and FOXO1A genes. The purpose of this study was to better understand a subset of myofibroblastomas that is characteristically CD34-deficient by immunohistochemistry...
May 30, 2017: Breast Journal
https://www.readbyqxmd.com/read/28546703/histological-surprises-in-benign-cytologies-after-lymph-node-biopsy-surgeon-s-knife-improving-patient-care
#12
Mario Victor Newton, Rakesh S Ramesh, Suraj Manjunath, K ShivaKumar, Hemanth G Nanjappa, Ramu Damuluri, Elvis Peter Joseph, C Prasad
Lymphadenopathy can be due to multitude of causes. Owing to the high prevalence of infectious diseases in India, and malignancy being a life threatening cause for lymphadenopathy; accurate diagnosis is important in preventing delay or misdiagnosis and in improving patient care, thereby increasing longevity with quality. Fine needle aspiration cytology (FNAC) is the first line investigation commonly done. Should the doctor be contented with the benign FNAC or is a lymph node biopsy needed in this age? The aims of this study are the following: (1) to study the spectral pattern of lymph node biopsies done in a surgical oncology unit of tertiary care centre, (2) to assess the yield of malignant cases from lymph node biopsy and (3) to compare the reliability of benign FNAC with lymph node biopsy...
June 2017: Indian Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28537220/patterned-cortical-tension-mediated-by-n-cadherin-controls-cell-geometric-order-in-the-drosophila-eye
#13
Eunice HoYee Chan, Pruthvi Chavadimane Shivakumar, Raphaël Clément, Edith Laugier, Pierre-François Lenne
Adhesion molecules hold cells together but also couple cell membranes to a contractile actomyosin network, which limits the expansion of cell contacts. Despite their fundamental role in tissue morphogenesis and tissue homeostasis, how adhesion molecules control cell shapes and cell patterns in tissues remains unclear. Here we address this question in vivo using the Drosophila eye. We show that cone cell shapes depend little on adhesion bonds and mostly on contractile forces. However, N-cadherin has an indirect control on cell shape...
May 24, 2017: ELife
https://www.readbyqxmd.com/read/28536110/bottom-of-an-iceberg-undiagnosed-aortic-aneurysm-masquerading-as-vocal-cord-palsy
#14
Vishal U S Rao, Sataksi Chatterjee, Shivakumar S Swamy
No abstract text is available yet for this article.
May 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28533638/clinical-utility-of-gallium-68-psma-pet-ct-scan-for-prostate-cancer
#15
Kumaraswamy G Kallur, Prashanth G Ramachandra, Krishnappa Rajkumar, Shivakumar S Swamy, Indiresh Desai, Raghavendra M Rao, Shekhar Gowda Patil, P S Sridhar, Nagaraj Madhusudhan, Raghunath S Krishnappa, Veerendra Bhadrasetty, Hemantha M Kumara, S D Santhosh, Basavalingaiah S Ajaikumar
BACKGROUND: Prostate cancer is biologically and clinically a heterogeneous disease that makes imaging evaluation challenging. One of the important challenges in this cancer is to detect recurrent disease. Biochemical response using Prostate Specific Antigen (PSA) and Imaging using several PET tracers have poor sensitivity and specificity. Therefore, we analyse the role of Ga68-PSMA (Prostate Specific Membrane Antigen) imaging in prostate cancer, which is a new PET tracer. METHODS: In this study, we evaluated PET scans of 262 patients with diagnosis of prostate cancer...
April 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/28524162/targeted-sequencing-based-analyses-of-candidate-gene-variants-in-ulcerative-colitis-associated-colorectal-neoplasia
#16
Sanjiban Chakrabarty, Vinay Koshy Varghese, Pranoy Sahu, Pradyumna Jayaram, Bhadravathi M Shivakumar, Cannanore Ganesh Pai, Kapaettu Satyamoorthy
BACKGROUND: Long-standing ulcerative colitis (UC) leading to colorectal cancer (CRC) is one of the most serious and life-threatening consequences acknowledged globally. Ulcerative colitis-associated colorectal carcinogenesis showed distinct molecular alterations when compared with sporadic colorectal carcinoma. METHODS: Targeted sequencing of 409 genes in tissue samples of 18 long-standing UC subjects at high risk of colorectal carcinoma (UCHR) was performed to identify somatic driver mutations, which may be involved in the molecular changes during the transformation of non-dysplastic mucosa to high-grade dysplasia...
May 18, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28521704/dopamine-d2-receptors-dimers-how-can-we-pharmacologically-target-them
#17
Marco Carli, Shivakumar Kolachalam, Stefano Aringhieri, Mario Rossi, Luca Giovannini, Roberto Maggio, Marco Scarselli
Dopamine D2 and D3 receptors are important pharmacological targets in Schizophrenia and Parkinson’s disease. Intriguingly, many studies have shown that they form homo- and heterodimers, and they can be targeted in specific tissues with new drugs. In this direction, many efforts have been made to develop new molecules that are able to interact with these receptor dimeric complexes. Among various strategies for targeting dopamine receptors dimers, two distinct classes of compounds, such as bivalent and bitopic ligands, have gained particular attention and their use in pharmacology looks promising...
May 18, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28492188/assessment-of-maternal-risk-indicators-for-the-development-of-caries-in-their-children-a-comparative-cross-sectional-study
#18
H R Priyadarshini, Bennete Aloysius Fernandes, S S Hiremath, Avita Rath, Vanishree Shivakumar, Anand Siddappa Tegginamani
INTRODUCTION: Certain factors in mothers could be risk indicators for certain diseases in their children. Hence, this study was undertaken to assess maternal risk indicators for the development of early childhood caries in their children. METHODOLOGY: A comparative, cross-sectional study was designed among 180 mother-child pairs attending various Anganwadi centers. Demographic, dietary, oral hygiene practices and other necessary information were collected from mothers using a structured questionnaire...
April 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28490935/characteristics-predicting-outcomes-of-allogeneic-stem-cell-transplantation-in-relapsed-acute-myelogenous-leukemia
#19
J Frazer, S Couban, S Doucette, S Shivakumar
BACKGROUND: Allogeneic hematopoietic stem-cell transplantation (ahsct) is associated with significant morbidity and mortality, but it can cure carefully selected patients with acute myeloid leukemia (aml) in second remission (cr2). In a cohort of patients with aml who underwent ahsct in cr2, we determined the pre-transplant factors that predicted for overall survival (os), relapse, and non-relapse mortality. We also sought to validate the prognostic risk groups derived by Michelis and colleagues in this independent population...
April 2017: Current Oncology
https://www.readbyqxmd.com/read/28478834/3d-printed-liner-for-treatment-of-periprosthetic-joint-infections
#20
Tae Won B Kim, Osvaldo J Lopez, Jillian P Sharkey, Kyle R Marden, Muhammad Ridwan Murshed, Shivakumar I Ranganathan
In the United States, long standing deep infections of joint arthroplasty, such as total knee and total hip replacements, are treated with two-stage exchange. This requires the removal of the prior implant, placement of an antibiotic eluting spacer block made of polymethylmethacrylate (PMMA), followed by re-implantation of a new implant after treatment with intravenous antibiotics for six to eight weeks. Unfortunately, the use of PMMA as a spacer material has limitations in terms of mechanical and drug-eluting properties...
May 2017: Medical Hypotheses
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