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Aliru M, Aziz K, Bodd M, Sanders K, Mahadevan L, Sahoo N, Tailor R, Krishnan S. Targeted Gold Nanoparticles Enhance Radiation Effects in Pancreatic Tumor Models. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Krishnan S, Graham J, Al Snih S. STRESS AND DEPRESSION AMONG CAREGIVERS FOR OLDER MEXICAN AMERICANS WITH AND WITHOUT STROKE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Pappadis M, Krishnan S, Weller S, Tan A, Jaramillo E, Sheffield K, Goodwin J. CONTINUE OR STOP: A QUALITATIVE ANALYSIS OF MAMMOGRAPHY SCREENING DECISION FOR OLDER WOMEN. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Krishnan S, Rawindran H, Sinnathambi CM, Lim JW. Comparison of various advanced oxidation processes used in remediation of industrial wastewater laden with recalcitrant pollutants. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1757-899x/206/1/012089] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Bhattarai SR, Derry PJ, Aziz K, Singh PK, Khoo AM, Chadha AS, Liopo A, Zubarev ER, Krishnan S. Gold nanotriangles: scale up and X-ray radiosensitization effects in mice. NANOSCALE 2017; 9:5085-5093. [PMID: 28134383 PMCID: PMC6091862 DOI: 10.1039/c6nr08172j] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
In the past decade, there has been considerable interest in radiosensitization using gold nanoparticles that accumulate specifically in cancerous tissue while sparing normal tissues. Despite this interest, it remains unclear which nanoparticle morphologies, cellular uptake, or cytoplasmic distribution elicit optimal radiosensitization. We introduce gold nanotriangles (AuNTs) as a possible X-ray radiotherapy sensitizer. In this study, we first explored a large-scale synthetic method for the production of high quality monodisperse AuNTs. Second, we conducted in vitro and in vivo experiments to evaluate the effect of PEGylated AuNTs (pAuNTs) on cellular uptake, cytotoxicity, bio-distribution, and radiosensitization on radiation-resistant human Glioblastoma Multiforme (GBM) cells. Our results suggest that the new scale up synthesis methodology consistently produced high quality AuNTs and pAuNTs which had nonspecific cellular uptake without any obvious cytotoxicity and exhibited excellent radiosensitization.
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Gupta N, Mishra D, Parihar M, Arora N, Singh M, Sr A, Rath A, Shewale S, Nair R, Bhave S, Chakrapani A, Radhakrishnan V, Bhattacharyya A, Krishnan S, Das A, Saha V, Chandy M. Spectrum of MDS Patients from a Single Tertiary Care Cancer Center in India. Leuk Res 2017. [DOI: 10.1016/s0145-2126(17)30253-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Iorio A, Krishnan S, Myrén KJ, Lethagen S, McCormick N, Yermakov S, Karner P. Indirect comparisons of efficacy and weekly factor consumption during continuous prophylaxis with recombinant factor VIII Fc fusion protein and conventional recombinant factor VIII products. Haemophilia 2017; 23:408-416. [PMID: 28233383 DOI: 10.1111/hae.13160] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/21/2016] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Recombinant factor VIII (rFVIII) products with extended half-lives have the potential to improve adherence and outcomes in haemophilia beyond the results obtained with conventional rFVIII products. AIM In the absence of head-to-head comparisons, annualized bleed rates (ABRs) and weekly factor consumption with rFVIII Fc fusion protein (rFVIIIFc) and conventional rFVIII products were indirectly compared using studies of continuous prophylaxis. METHODS A systematic literature review was conducted to identify studies of rFVIII products for comparison with rFVIIIFc in the continuous prophylactic treatment of previously treated adolescents and adults with moderate and severe haemophilia A. Mean ABRs were compared between rFVIIIFc and individual rFVIII studies and between rFVIIIFc and a pooled measure for rFVIII estimated by meta-analysis. Comparisons of factor consumption were based on mean or median weekly factor consumption. RESULTS Results from seven studies of conventional rFVIII products (injections 2-4 times week-1 ) were compared with rFVIIIFc (injections 1.4-2.4 times week-1 ). The pooled mean ABR for rFVIII products was significantly higher compared with rFVIIIFc (difference = 2.0; P = 0.007). Compared with most rFVIII studies, the reported weekly factor consumption was lower with rFVIIIFc [mean differences = 15.5-21.8 IU kg-1 week-1 (17-26%); median differences = 12.7-29.8 IU kg-1 week-1 (16-37%)]. In one comparison, mean weekly factor consumption with rFVIII was significantly lower but mean ABR was significantly higher than rFVIIIFc. CONCLUSION Prophylaxis with rFVIIIFc may be associated with improved bleeding rates and lower weekly factor consumption than more frequently injected rFVIII products. Relative to rFVIII products with similar bleeding rates, results indicate that rFVIIIFc is associated with reduced weekly factor consumption while requiring fewer prescribed injections.
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Krishnan S. Dr. T. S. Chandrasekar, incoming president, Indian Society of Gastroenterology 2016-2017. Indian J Gastroenterol 2017; 36:1-2. [PMID: 27878465 DOI: 10.1007/s12664-016-0716-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Accepted: 11/06/2016] [Indexed: 02/04/2023]
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von Mackensen S, Eldar-Lissai A, Auguste P, Krishnan S, von Maltzahn R, Yu R, Wyrwich KW. Measurement properties of the Haem-A-QoL in haemophilia clinical trials. Haemophilia 2016; 23:383-391. [PMID: 28026074 DOI: 10.1111/hae.13140] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/07/2016] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Patients with haemophilia on long-acting prophylactic treatment may experience an improvement in health-related quality of life (HRQoL) through reductions in breakthrough bleeds and associated complications, including long-term joint damage, compared with episodic treatment. AIM This analysis examined clinical trial data to understand the psychometric characteristics (reliability, validity and sensitivity to change over time) of the Haem-A-QoL Questionnaire in adult males with haemophilia. METHODS Two recent, multinational, Phase 3 clinical trials of new, long-acting factor concentrates (A-LONG: rFVIIIFc; B-LONG: rFIXFc) assessed HRQoL in adolescent and adult males with severe haemophilia A or B respectively. The adults' baseline assessments, via the 46-item Haem-A-QoL Questionnaire, and change over time at the 6-month assessment were used in the psychometric analyses. RESULTS Internal consistency reliability was adequate (Cronbach's alpha > 0.70) for nine of the 10 Haem-A-QoL domains and for 'Total Score' in both trials at baseline (A-LONG, n = 133; B-LONG, n = 73). At baseline, several Haem-A-QoL domains and 'Total Score' demonstrated known-groups and convergent validity when compared with other trial measures, including the EQ-5D (items and total scores) and joint impairment. Change score correlations (baseline to 28 weeks) between the EQ-5D and the Haem-A-QoL 'Total Score', and 'Physical Health' and 'Feelings' domains were moderate in magnitude (│r│ ≥ 0.33; P < 0.03), demonstrating sensitivity to change for these outcome measures in A-LONG. CONCLUSION These psychometric analyses provide evidence of the reliability, validity and ability to detect change of the Haem-A-QoL to assess the HRQoL of adult males with severe haemophilia A and B in longitudinal clinical trials.
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Deshpande AS, Mirgal A, Krishnan S, Narkhede S, Janarthanam MK. Extended distribution of Dipcadi concanense (Dalzell) Baker - a highly threatened plant taxon of the family Asparagaceae. JOURNAL OF THREATENED TAXA 2016. [DOI: 10.11609/jott.2403.8.13.9586-9588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Dipcadi concanense (Dalzell) Baker a highly threatened species is endemic to the Konkan region of Maharashtra State, India. Now, it is recorded from a new locality in Goa State, extending its distribution further southwards. A total of 10 patches of a large population were identified in the new locality with an area of occupancy of about 14,400sq.m.
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Bhonsle SJ, Krishnan S. Molecular Genetic Diversity of Landraces, Cultivars and Wild Relatives of Rice of Goa. CURR SCI INDIA 2016. [DOI: 10.18520/cs/v111/i10/1675-1679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Miners AH, Krishnan S, Pasi KJ. Predicting the outcomes of using longer-acting prophylactic factor VIII to treat people with severe hemophilia A: a hypothetical decision analysis. J Thromb Haemost 2016; 14:2141-2147. [PMID: 27510890 DOI: 10.1111/jth.13440] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Indexed: 01/19/2023]
Abstract
Essentials No randomized trials have compared long-acting factor VIII (FVIII) with currently used products. A comparison was undertaken using a decision model to predict FVIII use and number of bleeds. In the base case, longer acting FVIII reduced factor use by 17% while resulting in similar bleeds. The value of longer acting FVIII will be largely determined by existing regimens and unit price. Click to hear Prof. Makris's presentation on new treatments in hemophilia SUMMARY: Background Recently, factor VIII (FVIII) products with longer half-lives, such as recombinant FVIII Fc fusion protein (rFVIIIFc), have become available. Use of longer-acting FVIII products will largely depend on effectiveness and cost; no direct evaluations have compared these parameters between conventional and longer-acting FVIII therapies. Objectives To present a hypothetical decision analysis, combining evidence from multiple sources to estimate bleeding frequency, resource use and cost of longer-acting prophylactic products, such as rFVIIIFc, vs. conventional recombinant FVIII (rFVIII). Patients/Methods The decision model used published pharmacokinetic parameters, bleeding frequency vs. time information below a 1-IU dL-1 FVIII trough level, and adherence. Prophylactic treatment scenarios were modelled for a hypothetical patient with severe hemophilia A (<1 IU/dL) receiving rFVIIIFc or rFVIII. Results Infusing twice weekly with rFVIIIFc 42.7 IU kg-1 per dose required less clotting factor than infusing every 56 h with rFVIII 33.75 IU kg-1 per dose; annual bleeding rates were similar. Base case analysis suggested that total FVIII costs were equated when rFVIIIFc cost 1.18 times more per IU than rFVIII, assuming similar adherence. Other modelled scenarios produced similar results, although differences in FVIII consumption were particularly sensitive to assumptions regarding frequency and dose of the rFVIII and rFVIIIFc regimens. For example, decreasing rFVIII from 33.75 IU kg-1 to 30 IU kg-1 per dose decreased the price factor to 1.05. Conclusions Longer-acting FVIII products may reduce FVIII consumption and infusion frequency without compromising hemostatic effect; this should be considered along with other factors (e.g. adherence and underlying FVIII regimen) when evaluating a suitable price for these agents.
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Kearns M, Reddy K, Krishnan S, Radojicic C, Gonzalez-Estrada A. O003 Successful treatment of attacks in hereditary angioedema with normal C1 inhibitor using prophylactic tranexamic acid. Ann Allergy Asthma Immunol 2016. [DOI: 10.1016/j.anai.2016.09.363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Osborne E, Eng C, Skibber J, Rodriguez-Bigas M, Chang G, You Y, Bednarski B, Minsky B, Delclos M, Koay E, Krishnan S, Crane C, Das P. Outcomes Following Hyperfractionated Accelerated Reirradiation for Recurrent Anal Cancer. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Burghardt I, Krishnan S. P01.05 Differential expression patterns of the transforming growth factor (TGF)-beta receptors (TGF-bR) I ALK-1 and ALK-5 and TGF-bR II in glioblastoma. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now188.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Colbert L, Moningi S, Chadha A, Wolff R, Varadhachary G, Fleming J, Katz M, Taniguchi C, Das P, Krishnan S, Koay E, Crane C. Dose Escalation With an Intensity Modulated Radiation Therapy Technique in 15 to 28 Fractions Is Better Tolerated Than Are Standard Doses of 3DCRT for LAPC. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Galsky M, Retz M, Siefker-Radtke A, Baron A, Necchi A, Bedke J, Plimack E, Vaena D, Grimm MO, Bracarda S, Arija JA, Pal S, Ohyama C, Saci A, Lambert A, Krishnan S, Azrilevich A, Sharma P. Efficacy and safety of nivolumab monotherapy in patients with metastatic urothelial cancer (mUC) who have received prior treatment: Results from the phase II CheckMate 275 study. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw435.24] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Aliru M, Khoo A, Krishnan S. Tumor Radiosensitization Using Nuclear-Targeted Gold Nanoparticles. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.2103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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95
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Tao R, Tsai C, Eng C, Kopetz S, Overman M, Skibber J, Rodriguez-Bigas M, Chang G, You Y, Bednarski B, Minsky B, Delclos M, Koay E, Krishnan S, Crane C, Das P. Hyperfractionated Accelerated Reirradiation for Rectal Cancer: A Large Single-Institution Retrospective Analysis. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Khoo A, Sahoo N, Krishnan S, Diagaradjane P. Enhancing the Relative Biological Effectiveness of Proton Therapy Using EGFR-Targeted Gold Nanorods. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.587] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Singh P, Deorukhkar A, Diagaradjane P, Aziz K, Tailor R, Bomalaski J, Krishnan S. Arginine Deiminase Radiosensitizes Pancreatic Cancer by Amplifying Early Endoplasmic Reticulum Stress. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.2102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Liang T, Boulos MI, Murray BJ, Krishnan S, Katzberg H, Umapathy K. Detection of myasthenia gravis using electrooculography signals. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2016; 2016:896-899. [PMID: 28268468 DOI: 10.1109/embc.2016.7590845] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Myasthenia gravis (MG) is an autoimmune neuromuscular disorder resulting from skeletal muscle weakness and fatigue. An early common symptom is fatigable weakness of the extrinsic ocular muscles; if symptoms remain confined to the ocular muscles after a few years, this is classified as ocular myasthenia gravis (OMG). Diagnosis of MG when there are mild, isolated ocular symptoms can be difficult, and currently available diagnostic techniques are insensitive, non-specific or technically cumbersome. In addition, there are no accurate biomarkers to follow severity of ocular dysfunction in MG over time. Single-fiber electromyography (SFEMG) and repetitive nerve stimulation (RNS) offers a way of detecting and measuring ocular muscle dysfunction in MG, however, challenges of these methods include a poor signal to noise ratio in quantifying eye muscle weakness especially in mild cases. This paper presents one of the attempts to use the electric potentials from the eyes or electrooculography (EOG) signals but obtained from three different forms of sleep testing to differentiate MG patients from age- and gender-matched controls. We analyzed 8 MG patients and 8 control patients and demonstrated a difference in the average eye movements detected between the groups. A classification accuracy as high as 68.8% was achieved using a linear discriminant analysis based classifier.
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Wyrwich KW, Krishnan S, Auguste P, Poon JL, von Maltzahn R, Yu R, Pierce GF, Mei B, Mahlangu J, von Mackensen S. Changes in health-related quality of life with treatment of longer-acting clotting factors: results in the A-LONG and B-LONG clinical studies. Haemophilia 2016; 22:866-872. [DOI: 10.1111/hae.12987] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/22/2016] [Indexed: 11/29/2022]
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Beheshti M, Foomany FH, Magtibay K, Masse S, Lai P, Asta J, Jaffray DA, Nanthakumar K, Krishnan S, Umapathy K. Modeling Current Density Maps Using Aliev-Panfilov Electrophysiological Heart Model. Cardiovasc Eng Technol 2016; 7:238-53. [PMID: 27357301 DOI: 10.1007/s13239-016-0271-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 06/22/2016] [Indexed: 11/28/2022]
Abstract
Most existing studies of cardiac arrhythmia rely on surface measurements through optical or electrical mapping techniques. Current density imaging (CDI) is a method which enables us to study current pathways inside the tissue. However, this method entails implementation complexities for beating ex vivo hearts. Hence, this work presents an approach to simulate and study the current distributions in different cardiac electrophysiological states. The results are corroborated by experimental data, and they indicate that different states were distinguishable. The CDI simulations can be used for studying cardiac arrhythmias under simulation conditions which are otherwise impossible or difficult to be implemented experimentally.
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