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Mohit Kumar Jolly, Prakash Kulkarni, Keith Weninger, John Orban, Herbert Levine
It is well known that genetic mutations can drive drug resistance and lead to tumor relapse. Here, we focus on alternate mechanisms-those without mutations, such as phenotypic plasticity and stochastic cell-to-cell variability that can also evade drug attacks by giving rise to drug-tolerant persisters. The phenomenon of persistence has been well-studied in bacteria and has also recently garnered attention in cancer. We draw a parallel between bacterial persistence and resistance against androgen deprivation therapy in prostate cancer (PCa), the primary standard care for metastatic disease...
2018: Frontiers in Oncology
Vinay Kulkarni, Anthony Murray, Rajat Mittal, David Spence, Gabrielle O'Kane, Ian Incoll
Nail varnish is commonly removed from fingernails prior to surgical procedures. We report the results of a randomized controlled trial comparing the microbial counts in hands with and without nail varnish applied, following surgical skin preparation. Forty-three patients were randomized; three patients were lost to follow-up. Each patient had one hand painted with nail varnish and had both hands tested 1 week later. There was no significant difference in terms of positive microbial growth between the nail plates or hyponichia with or without nail varnish applied...
January 1, 2018: Journal of Hand Surgery, European Volume
Upasana Kulkarni, Daniel R Goldstein
No abstract text is available yet for this article.
April 2018: Transplantation
Jayashri Kulkarni, Natalie Thomas, Abdul-Rahman Hudaib, Emorfia Gavrilidis, Jasmin Grigg, Raelene Tan, Jacinta Cheng, Amelia Arnold, Caroline Gurvich
BACKGROUND: Borderline personality disorder (BPD) is a complex, severe and highly stigmatised psychiatric illness. Several lines of evidence highlight the causal link between chronic stress, glucocorticoid response to stress and glutamatergic overactivity as a key event in the pathophysiology of BPD. Therefore, molecular mechanisms capable of regulating glutamate excitotoxicity represent novel and potentially promising treatment targets. Memantine-HCl is a voltage-dependent N-methyl-D-aspartate (NMDA) receptor 'channel blocker' that selectively blocks pathological glutamate overactivity...
March 16, 2018: CNS Drugs
Jessica MacLean, Tamara MacDonald, Carol Digout, Nadine Smith, Krista Rigby, Ketan Kulkarni
BACKGROUND: Central venous catheter (CVC) dysfunction is a common complication among pediatric cancer patients. Tissue plasminogen activator (tPA) is administered to resolve CVC dysfunction. The present study was designed to determine risk factors associated with requirement of tPA for CVC dysfunction and to assess the clinical impact of CVC dysfunction in terms of CVC loss and venous thrombotic events (VTE). PROCEDURE: Case records of all pediatric patients with cancer from the Maritimes, Canada were reviewed following ethics approval...
March 14, 2018: Pediatric Blood & Cancer
Chandni Rajesh Patel, Aryan Maleki, Sagar Kulkarni
No abstract text is available yet for this article.
2018: Advances in Medical Education and Practice
Sanjay Chauhan, Sayeed Unisa, Beena Joshi, Ragini Kulkarni, Amarjeet Singh, Thilakavathi Subramanian, Ramendra Narayan Chaudhuri, A C Baishya, Shalini Bharat, Anushree Patil, Achhelal Pasi, Dinesh Agarwal
Background: Infertility is a neglected service component in the public health-care system in India. Objectives: This study aims to assess the availability and practices on prevention and management services for infertility in the district health system. Methodology: A cross-sectional survey of selected health facilities and the staff from 12 district hospitals (DHs), 24 community health centers (CHCs), 48 primary health centers (PHCs), and 48 subcenters was conducted using qualitative and quantitative methods...
January 2018: Indian Journal of Community Medicine
Gurudatt Pavagada Sudarshan, Manoj Kulkarni, Leonid Akhov, Paula Ashe, Hamid Shaterian, Sylvie Cloutier, Gordon Rowland, Yangdou Wei, Gopalan Selvaraj
A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.
March 12, 2018: Scientific Reports
Eleonora Vighi, Dragana Trifunović, Patricia Veiga-Crespo, Andreas Rentsch, Dorit Hoffmann, Ayse Sahaboglu, Torsten Strasser, Manoj Kulkarni, Evelina Bertolotti, Angelique van den Heuvel, Tobias Peters, Arie Reijerkerk, Thomas Euler, Marius Ueffing, Frank Schwede, Hans-Gottfried Genieser, Pieter Gaillard, Valeria Marigo, Per Ekström, François Paquet-Durand
Inherited retinal degeneration (RD) is a devastating and currently untreatable neurodegenerative condition that leads to loss of photoreceptor cells and blindness. The vast genetic heterogeneity of RD, the lack of "druggable" targets, and the access-limiting blood-retinal barrier (BRB) present major hurdles toward effective therapy development. Here, we address these challenges ( i ) by targeting cGMP (cyclic guanosine- 3',5'-monophosphate) signaling, a disease driver common to different types of RD, and ( ii ) by combining inhibitory cGMP analogs with a nanosized liposomal drug delivery system designed to facilitate transport across the BRB...
March 12, 2018: Proceedings of the National Academy of Sciences of the United States of America
Nathan Perlis, Murray D Krahn, Kirstin E Boehme, Shabbir Mh Alibhai, Munir Jamal, Antonio Finelli, Srikala S Sridhar, Peter Chung, Rushi Gandhi, Jennifer Jones, George Tomlinson, Karen E Bremner, Girish Kulkarni
PURPOSE: Health-related quality of life (HRQOL) is important in bladder cancer care and clinical decision-making because patients must choose between diverse treatment modalities with unique morbidities. A patient-reported outcome (PRO) measure of overall HRQOL for bladder cancer regardless of disease severity and treatment could benefit clinical care and research. MATERIALS AND METHODS: Prospective questionnaire development was completed in three parts. In study 1, the Bladder Utility Symptom Scale (BUSS) questions were created by experts using a conceptual framework of BC HRQOL generated through patient focus groups...
March 9, 2018: Journal of Urology
Manoj Kumar, Shanmugasundaram Nagarajan, Harshad V Murugkar, Barnalee Saikia, Bharati Singh, Amit Mishra, Sushil K Tripathi, Sonam Agarwal, Shweta Shukla, Diwakar D Kulkarni, Vijendra Pal Singh, Chakradhar Tosh
H6 subtype avian influenza viruses (AIV), established in terrestrial poultry, have jumped species barriers and caused human infection indicating pandemic potential of the virus. Here, we report isolation, and antigenic and genetic characterization of two H6N2 viruses isolated from apparently healthy domestic ducks in Kerala and Assam, India during 2014 and 2015, respectively. Hemagglutination inhibition assay revealed antigenic divergence between the two isolates. This result was corroborated by amino acid differences at 55 positions (15...
March 9, 2018: Infection, Genetics and Evolution
Leena Joseph, A P Das, Anuradha Ravindra, D B Kulkarni, M S Kulkarni
4πβ-γ coincidence method is a powerful and widely used method to determine the absolute activity concentration of radioactive solutions. A new automated liquid scintillator based coincidence system has been designed, developed, tested and established as absolute standard for radioactivity measurements. The automation is achieved using PLC (programmable logic controller) and SCADA (supervisory control and data acquisition). Radioactive solution of60 Co was standardized to compare the performance of the automated system with proportional counter based absolute standard maintained in the laboratory...
March 6, 2018: Applied Radiation and Isotopes
Wei-Lun Tang, Wei-Hsin Tang, Andras Szeitz, Jayesh Kulkarni, Pieter Cullis, Shyh-Dar Li
The solvent-assisted active loading technology (SALT) was developed for encapsulating a water insoluble weak base into the liposomal core in the presence of 5% DMSO. In this study, we further examined the effect of various water miscible solvents in promoting active loading of other types of drugs into liposomes. To achieve complete drug loading, the amount of solvent required must result in complete drug solubilization and membrane permeability enhancement, but must be below the threshold that induces liposomal aggregation or causes bilayer disruption...
March 3, 2018: Biomaterials
Aditi Kulkarni, Jessica Chen, Sandra Maday
Neurons are particularly dependent on robust quality control pathways to maintain cellular homeostasis and functionality throughout their extended lifetime. Failure to regulate protein and organelle integrity is linked to devastating neurodegenerative diseases. Autophagy is a lysosomal degradation pathway that maintains homeostasis by recycling damaged or aged cellular components. Autophagy has important functions in development of the nervous system, as well as in neuronal function and survival. In fact, defects in autophagy underlie neurodegeneration in mice and humans...
March 9, 2018: Current Opinion in Neurobiology
Jahnavi Aluri, Maya Gupta, Aparna Dalvi, Snehal Mhatre, Manasi Kulkarni, Gouri Hule, Mukesh Desai, Nitin Shah, Prasad Taur, Ramprasad Vedam, Manisha Madkaikar
Major histocompatibility complex (MHC) class II deficiency is a rare autosomal recessive form of primary immunodeficiency disorder (PID) characterized by the deficiency of MHC class II molecules. This deficiency affects the cellular and humoral immune response by impairing the development of CD4+ T helper (Th) cells and Th cell-dependent antibody production by B cells. Affected children typically present with severe respiratory and gastrointestinal tract infections. Hematopoietic stem cell transplantation (HSCT) is the only curative therapy available for treating these patients...
2018: Frontiers in Immunology
Natalie K Y Wee, Ronaldo F Enriquez, Amy D Nguyen, Harry Horsnell, Rishikesh Kulkarni, Ee Cheng Khor, Herbert Herzog, Paul A Baldock
OBJECTIVE: To determine whether age and neuropeptide Y (NPY) were involved in the skeletal response to extended periods of diet-induced obesity. METHODS: Male wild-type (WT) and NPY null (NPYKO) mice were fed a mild (23% fat) high-fat diet for 10 weeks from 6 or 16 weeks of age. Metabolism and bone density were assessed during feeding. Skeletal changes were assessed by microCT and histomorphometry. RESULTS: High-fat feeding in 6-week-old WT mice led to significantly increased body weight, adiposity and serum leptin levels, accompanied with markedly suppressed cortical bone accrual...
March 9, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
Goudappagouda- -, Murali- Gedda, Giridhar U Kulkarni, Santhosh Babu Sukumaran
One-dimensional (1D) nanostructures of -conjugated molecules exhibiting excellent charge carrier mobilities have found much interest in organic electronic devices. Even though it is tedious to form such structures, the availability of highly delocalized electron and hole carriers in these donor (D)-acceptor (A) co-assemblies realize ambipolar charge transport. Here we report the successful demonstration of a simple solution casting method to create ambipolar donor-acceptor single crystalline assembly. 1D assemblies of 5,10,15,20-tetraphenylporphyrins (H2TPP, ZnTPP) and fullerene (C60) exhibit high ambipolar mobility in the range of 0...
March 9, 2018: Chemistry: a European Journal
Nagarajan Muthukaman, Sanjay Deshmukh, Macchindra Tambe, Dnyandeo Pisal, Shital Tondlekar, Mahamadhanif Shaikh, Neelam Sarode, Vidya G Kattige, Pooja Sawant, Monali Pisat, Vikas Karande, Srinivasa Honnegowda, Abhay Kulkarni, Dayanidhi Behera, Satyawan B Jadhav, Ramchandra R Sangana, Girish S Gudi, Neelima Khairatkar-Joshi, Laxmikant A Gharat
In an effort to identify CYP and hERG clean mPGES-1 inhibitors from the dihydrofuran-fused tricyclic benzo[d]imidazole series lead 7, an extensive structure-activity relationship (SAR) studies were performed. Optimization of A, D and E-rings in 7 afforded many potent compounds with human whole blood potency in the range of 160-950 nM. Selected inhibitors 21d, 21j, 21m, 21n, 21p and 22b provided selectivity against COX-enzymes and mPGES-1 isoforms (mPGES-2 and cPGES) along with sufficient selectivity against prostanoid synthases...
February 28, 2018: Bioorganic & Medicinal Chemistry Letters
Yashraj S Kulkarni, Qinghua Liao, Fabian Byléhn, Tina L Amyes, John P Richard, Shina C L Kamerlin
We have previously performed empirical valence bond calculations of the kinetic activation barriers, ∆G‡ calc , for the deprotonation of complexes between TIM and the whole substrate glyceraldehyde-3-phosphate (GAP, Kulkarni et al. J. Am. Chem. Soc. 2017 , 139, 10514-10525). We now extend this work to also study the deprotonation of the substrate pieces glycolaldehyde (GA) and GA•HPi [HPi = phosphite dianion]. Our combined calculations provide activation barriers, ∆G‡ calc , for the TIM-catalyzed deprotonation of GAP (12...
March 8, 2018: Journal of the American Chemical Society
Nithin Kumar, Tanuj Kanchan, Bhaskaran Unnikrishnan, Rekha Thapar, Prasanna Mithra, Vaman Kulkarni, Ramesh Holla, Darshan Bhagwan, Yeshwanter Radhakrishnan
BACKGROUND: The Medical Council of India (MCI) has envisioned a change in the undergraduate medical curriculum by encouraging integrated teaching and Problem Based Learning (PBL). METHODS: In this cross-sectional study 110 medical teachers of Kasturba Medical College, Mangalore were assessed regarding their perception on PBL. Independent t -test was applied to find out the difference in the mean perception scores regarding PBL among the teachers in pre/para-clinical and clinical departments and P < 0...
September 2017: Indian Journal of Pharmacology
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