26
|
Gerberich BG, Hannon BG, Hejri A, Winger EJ, Schrader Echeverri E, Nichols LM, Gersch HG, MacLeod NA, Gupta S, Read AT, Ritch MD, Sridhar S, Toothman MG, Gershon GS, Schwaner SA, Sánchez-Rodríguez G, Goyal V, Toporek AM, Feola AJ, Grossniklaus HE, Pardue MT, Ethier CR, Prausnitz MR. Transpupillary collagen photocrosslinking for targeted modulation of ocular biomechanics. Biomaterials 2021; 271:120735. [PMID: 33721571 PMCID: PMC8044034 DOI: 10.1016/j.biomaterials.2021.120735] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 02/15/2021] [Accepted: 02/21/2021] [Indexed: 12/21/2022]
Abstract
The central vision-threatening event in glaucoma is dysfunction and loss of retinal ganglion cells (RGCs), thought to be promoted by local tissue deformations. Here, we sought to reduce tissue deformation near the optic nerve head by selectively stiffening the peripapillary sclera, i.e. the scleral region immediately adjacent to the optic nerve head. Previous scleral stiffening studies to treat glaucoma or myopia have used either pan-scleral stiffening (not regionally selective) or regionally selective stiffening with limited access to the posterior globe. We present a method for selectively stiffening the peripapillary sclera using a transpupillary annular light beam to activate methylene blue administered by retrobulbar injection. Unlike prior approaches to photocrosslinking in the eye, this approach avoids the damaging effects of ultraviolet light by employing red light. This targeted photocrosslinking approach successfully stiffened the peripapillary sclera at 6 weeks post-treatment, as measured by whole globe inflation testing. Specifically, strain was reduced by 47% when comparing treated vs. untreated sclera within the same eye (n = 7, p=0.0064) and by 54% when comparing the peripapillary sclera of treated vs. untreated eyes (n = 7, p<0.0001). Post-treatment characterization of RGCs (optic nerve axon counts/density, and grading), retinal function (electroretinography), and retinal histology revealed that photocrosslinking was associated with some ocular toxicity. We conclude that a transpupillary photocrosslinking approach enables selective scleral stiffening targeted to the peripapillary region that may be useful in future treatments of glaucoma.
Collapse
|
27
|
Kumar SS, Ragunanthanan S, Ramesh D, Rajendran V, Sridhar S. Case Reports of Two Interesting Patients with Sea Snake Envenomation. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 2020; 68:78-81. [PMID: 33247651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Sea Snakes have the most potent venom among snakes known to mankind and a few species are implicated in human fatalities.1 Commonest Sea snake in the Indian Sea is Enhydrina Schistosa.2 Mortality is high in spite of therapy because of multiple complications. This is a Case report of two Fishermen who were bitten by Sea Snake and developed complications.
Collapse
|
28
|
Iadonato S, Tarcha E, Bader R, Dutzar B, Eyde N, Frazier E, Jurchen D, Lance R, Loomis C, Lustig K, Ovechkina Y, Peckham D, Posakony J, Sridhar S, Xu M, Guillaudeux T. 76P Highly potent fully human anti-VISTA antibodies efficiently abrogate the interaction of this new target checkpoint inhibitor to its different putative receptors at different pH. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
29
|
|
30
|
Soria F, Giordano A, Black P, Fairey A, Cookson M, Yu E, Kassouf W, Dall’Era M, Sridhar S, McGrath J, Wright J, Thorpe A, Morgan T, Daneshmand S, Holzbeierlein J, Bivalacqua T, North S, Barocas D, Lotan Y, Grivas P, Stephenson A, Shah J, van Rhijn B, Spiess P, Shariat S, Gontero P. Neoadjuvant chemotherapy plus radical cystectomy versus radical cystectomy alone in clinical T2 bladder cancer patients without hydronephrosis: results from a large multicenter cohort study. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)35401-x] [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] Open
|
31
|
Powles T, Loriot Y, Bellmunt J, Sternberg C, Sridhar S, Petrylak D, Tambaro R, Dourthe L, Alvarez-Fernandez C, Aarts M, Mu X, Ching K, Pu J, Roychoudhury S, Davis C, di Pietro A, Grivas P. 699O Avelumab first-line (1L) maintenance + best supportive care (BSC) vs BSC alone for advanced urothelial carcinoma (UC): Association between clinical outcomes and exploratory biomarkers. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.771] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
32
|
Al-Ezzi E, Alqaisi H, Iafolla M, Sridhar S, Sacher A, Fallah-Rad N, Jiang D, Catton C, Warde P, Hamilton R, Fleshner N, Zlotta A, Hansen A. 668P Clinical factors that are prognostic for survival outcomes in men with metastatic castration-resistant prostate cancer (mCRPC) treated with radium-223. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
33
|
Somford D, Daneshmand S, Grivas P, Sridhar S, Gupta S, Bellmunt J, Sonpavde G, Fleming M, Lerner S, Loriot Y, Li A, Takkele H, Andresen C, Rearden J, Peacock Shepherd S, Schnabel M, Pal S. 799TiP PROOF 302: A randomized, double-blind, placebo-controlled, phase III trial of infigratinib as adjuvant therapy in patients with invasive urothelial carcinoma harboring susceptible FGFR3 alterations. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.2070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
34
|
Chan KH, Sridhar S, Zhang RR, Chu H, Fung AYF, Chan G, Chan JFW, To KKW, Hung IFN, Cheng VCC, Yuen KY. Factors affecting stability and infectivity of SARS-CoV-2. J Hosp Infect 2020; 106:226-231. [PMID: 32652214 PMCID: PMC7343644 DOI: 10.1016/j.jhin.2020.07.009] [Citation(s) in RCA: 155] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/06/2020] [Indexed: 02/09/2023]
Abstract
BACKGROUND In late 2019, a novel human coronavirus - severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) - emerged in Wuhan, China. This virus has caused a global pandemic involving more than 200 countries. SARS-CoV-2 is highly adapted to humans and readily transmits from person-to-person. AIM To investigate the infectivity of SARS-CoV-2 under various environmental and pH conditions. The efficacies of various laboratory virus inactivation methods and home disinfectants against SARS-CoV-2 were investigated. METHODS The residual virus in dried form or in solution was titrated on to Vero E6 cells on days 0, 1, 3, 5 and 7 after incubation at different temperatures. Viral viability was determined after treatment with various disinfectants and pH solutions at room temperature (20-25oC). FINDINGS SARS-CoV-2 was able to retain viability for 3-5 days in dried form or 7 days in solution at room temperature. SARS-CoV-2 could be detected under a wide range of pH conditions from pH 4 to pH 11 for several days, and for 1-2 days in stool at room temperature but lost 5 logs of infectivity. A variety of commonly used disinfectants and laboratory inactivation procedures were found to reduce viral viability effectively. CONCLUSION This study demonstrated the stability of SARS-CoV-2 on environmental surfaces, and raises the possibility of faecal-oral transmission. Commonly used fixatives, nucleic acid extraction methods and heat inactivation were found to reduce viral infectivity significantly, which could ensure hospital and laboratory safety during the SARS-CoV-2 pandemic.
Collapse
|
35
|
Gravis G, Kolinsky M, Mourey L, Piulats J, Sridhar S, Romano E, Berry W, Gurney H, Retz M, Appleman L, Boegemann M, De Bono J, Joshua A, Emmenegger U, Conter H, Laguerre B, Wu H, Schloss C, Poehlein C, Yu E. KEYNOTE-365 cohort B updated results: Pembrolizumab (pembro) plus docetaxel and prednisone in abiraterone (abi) or enzalutamide (enza) pre-treated patients with metastatic castration-resistant prostate cancer (mCRPC). EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33163-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
36
|
Cecchi F, Carrolle D, Gustavson M, Sridhar S, de los Reyes M, Thyparambil S, Bhalkikar A, Liao WL, Coats S, Hembrough T. 13P HER2 low testing in breast cancer: How to optimize detection. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.03.149] [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] Open
|
37
|
Mandal S, Santhi B, Sridhar S, Vinolia K, Swaminathan P. Minor fault detection of thermocouple sensor in nuclear power plants using time series analysis. ANN NUCL ENERGY 2019. [DOI: 10.1016/j.anucene.2019.07.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
38
|
Mandal S, Santhi B, Sridhar S, Vinolia K, Swaminathan P. Sensor fault detection in nuclear power plants using symbolic dynamic filter. ANN NUCL ENERGY 2019. [DOI: 10.1016/j.anucene.2019.07.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
39
|
Hansen A, Ala-leppilampi K, McKillop C, Siu L, Bedard P, Razak ARA, Spreafico A, Sridhar S, Leighl N, Butler M, Hogg D, Sacher A, Oza A, Nisenbaum R, Webster K, Cella D, Parsons J. Development of the functional assessment of cancer therapy-immune checkpoint modulator (FACT-ICM): A scale to measure quality of life in cancer patients treated with ICMs. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz253.101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
40
|
Powles T, Balar A, Gravis G, Jones R, Ravaud A, Florence J, Grivas P, Petrylak D, Galsky M, Carles J, Sridhar S, Arkenau HT, Carroll D, DeCesare J, Mercier F, Hodgson D, Stone J, Cosaert J, Landers D. An adaptive, biomarker directed platform study in metastatic urothelial cancer (BISCAY) with durvalumab in combination with targeted therapies. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz249.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
41
|
Hotte S, Winquist E, Chi K, Ellard S, Sridhar S, Emmenegger U, Salim M, Iqbal N, Canil C, Kollmannsberger C, Hansen A, Lalani AKA, Gingerich J, Finch D, Cabanero M, Wyatt A, Tu D, Vera-Badillo F, Seymour L, Smoragiewicz M. CCTG IND 232: A phase II study of durvalumab with or without tremelimumab in patients with metastatic castration resistant prostate cancer (mCRPC). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz394.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
42
|
Al-ezzi E, Veitch Z, Salah S, Van der Kwast T, Stockley T, Malone E, Sridhar S, Sacher A, Fallah-rad N, Kulkarni G, Zlotta A, Finelli A, Hansen A. Genomic characterization of non-schistosomiasis-related squamous cell carcinoma (NSR-SCC) of the urinary bladder: A retrospective study of potential prognostic and predictive biomarkers. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz249.042] [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
|
43
|
Dierckx H, Fenton FH, Filippi S, Pumir A, Sridhar S. Editorial: Simulating Normal and Arrhythmic Dynamics: From Sub-cellular to Tissue and Organ Level. FRONTIERS IN PHYSICS 2019; 7:89. [PMID: 37425197 PMCID: PMC10327871 DOI: 10.3389/fphy.2019.00089] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
|
44
|
Ajib K, Tjong M, Lunsky I, Tan G, Nason G, Erlich A, Manjula M, Sridhar S, Fleshner N, Zlotta A, Berlin A, Chung P, Kulkarni G. Impact of neoadjuvant chemotherapy on bladder recurrences in patients managed with trimodal therapy (TMT) for muscle-invasive bladder cancer. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/s1569-9056(19)31532-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
45
|
Sridhar S, Sebastian S, Asokan S. Temperature sensor based on multi-layer MoS 2 coated etched fiber Bragg grating. APPLIED OPTICS 2019; 58:535-539. [PMID: 30694236 DOI: 10.1364/ao.58.000535] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 12/10/2018] [Indexed: 06/09/2023]
Abstract
The development of an etched fiber Bragg grating (eFBG)-based temperature sensor with a uniform multi-layer molybdenum-di-sulphide (MoS2) coating is presented in this paper. Multi-layer MoS2 has been coated on clad etched FBG sensors by DC magnetron sputtering of molybdenum (Mo) and subsequent sulfurization. The dependence of temperature sensitivity on the coating thickness of MoS2 on eFBGs has been tested from room temperature to 100°C. It has been found that MoS2 coated clad etched FBG sensors with a coating thickness of around 10 nm exhibit a maximum temperature sensitivity of ∼95 pm/°C (almost one order higher than that of bare fiber Bragg gratings), with a resolution of ∼0.01°C obtained using an FBG interrogator with 1 pm resolution.
Collapse
|
46
|
Bernasko J, Salnave J, Sridhar S, Messina C, Combs A. 551: Does ACT between 30 and 34 weeks gestation reduce morbidity in late preterm/early term neonates? Am J Obstet Gynecol 2019. [DOI: 10.1016/j.ajog.2018.11.573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
47
|
Sebastian S, Sridhar S, Shiva Prasad P, Asokan S. Highly sensitive fiber Bragg grating-based pressure sensor using side-hole packaging. APPLIED OPTICS 2019; 58:115-121. [PMID: 30645508 DOI: 10.1364/ao.58.000115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 11/07/2018] [Indexed: 06/09/2023]
Abstract
In this work, an analysis of pressure response of a fiber Bragg grating (FBG) sensor in a side-hole package is presented using the finite element method. Various parameters of the side-hole packaging such as hole radius, the distance of separation between them, the radius and length of the package, and the choice of the package material are considered and optimized in order to promote maximum pressure sensitivity of the FBG sensor. This investigation on optimization of the side-hole package parameters gives rise to pressure sensitivity of nearly 105 times as compared with the bare FBG sensor, with the numerical values of 3 pm/MPa for a bare FBG sensor to ∼280,000 pm/MPa for an optimized side-hole package FBG sensor. Such high-pressure sensitivity of an FBG sensor is being reported for the very first time in this work, to the best of our knowledge, and can be considered as the initial step toward the realization of a highly sensitive hydrophone based on FBG for sensing underwater acoustic signals.
Collapse
|
48
|
Southern J, Sridhar S, Tsou CY, Hopkins S, Collier S, Nikolayevskyy V, Lozewicz S, Lalvani A, Abubakar I, Lipman M. Discordance in latent tuberculosis (TB) test results in patients with end-stage renal disease. Public Health 2018; 166:34-39. [PMID: 30439554 DOI: 10.1016/j.puhe.2018.09.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 09/18/2018] [Accepted: 09/25/2018] [Indexed: 11/18/2022]
Abstract
OBJECTIVES This natural experiment was designed to assess the impact of exposure to an active case of tuberculosis (TB) on a group of immunosuppressed individuals, with end-stage renal disease over an extended follow-up. STUDY DESIGN Close contacts of people with sputum smear-positive Mycobacterium tuberculosis are at high risk of infection, particularly immunosuppressed individuals. An infectious TB healthcare worker worked in a renal dialysis unit for a month before diagnosis, with 104 renal dialysis patients, was exposed for ≥8 h. METHODS Patients were informed and invited for screening 8-10 weeks postexposure. They either underwent standard two-step assessment with tuberculin skin test (TST) and QuantiFERON®-TB Gold (Cellestis GmbH; QFN) interferon-gamma release assay (IGRA) or after consent, enrolled in a study where these two tests were performed simultaneously with T-SPOT®-TB (Oxford Immunotec Ltd; TSPOT). Patients within the study were followed up for 2 years from exposure, with QFN and TSPOT repeated at months 3 and 6 from the first testing. RESULTS Of 104 exposed individuals, 75 enrolled in the study. There was a high degree of discordance among QFN, TSPOT and TST. This was seen at both the first time point and also over time in subjects who were retested. No patients had active TB at the baseline testing. None received treatment for latent TB infection. Over the following 2 years, no one developed TB disease. CONCLUSION This study suggests that there is a low risk of progression to active TB in low-incidence countries even in high-risk groups. This plus the degree of the test result discordance emphasises the complexities of managing TB in such settings as it is unclear which of these tests, if any, provides the best diagnostic accuracy.
Collapse
|
49
|
Marcu I, Balica A, Lemos N, Sridhar S, Gavard J, Campian E. Pelvic Neuroanatomy Knowledge Assessment and Improvement. J Minim Invasive Gynecol 2018. [DOI: 10.1016/j.jmig.2018.09.331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
50
|
Higgs B, Morehouse C, Brohawn P, Sridhar S, Raja R, Gao G, Englert J, Ranade K. High tumor mutational burden (TMB) and PD-L1 have similar predictive utility in 2L+ NSCLC patients (pts) treated with anti-PD-L1 and anti-CTLA-4. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy269.063] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|