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Mouniga R, Anita B, Lakshmanan A, Shanthi A, Karthikeyan G. Nematicidal Properties of Chitosan Nanoformulation. J Nematol 2023; 55:20230033. [PMID: 37622051 PMCID: PMC10446853 DOI: 10.2478/jofnem-2023-0033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Indexed: 08/26/2023] Open
Abstract
Chitosan is the second most abundant bio-polymer available in the world, second only to cellulose. It is found in crustaceous shells, e.g., those of crabs, shrimps, prawns, and fungi, as well as insect exoskeletons. The use of nanoformulations for the management of pests and diseases is receiving increased interest with the advancement of nanotechnology. Here, chitosan nanospheres were obtained from chitosan using the ionic gelation technique. The nanoformulations obtained were characterized using a particle size analyzer, Fourier transform infrared spectroscopy, and a transmission electron microscope. The efficacy of chitosan nanospheres in suppressing the root-knot nematode Meloidogyne incognita was studied. The particle size of nanospheres formulated for this study was 380.2 nm, with a polydispersity index (PI) of 0.4 and Zeta potential of 45.7 or 50.9 mV at pH 5.2. The chitosan nanospheres were spherical and the particles did not agglomerate. FTIR spectra of the chitosan nanospheres peaked at 3334 cm-1, thereby indicating the stretching of the OH and NH group. In In-vitro studies, chitosan nanospheres showed significant nematicidal activity against M. incognita. Under pot culture conditions, chitosan nanospheres (1%- active compound chitosan) at 2ml/plant decreased the nematode population in roots or soil. Compared to the control, the number of galls was reduced by 83.68%, the number of egg masses by 83.85%, the number of adult females by 66.56%, and the number of second-stage juveniles by 73.20%. In a field experiment, application of chitosan nanospheres (1%) was followed by a 18.75% increase in fruit yield compared to the non-treated control.
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Affiliation(s)
- R. Mouniga
- Tamil Nadu Agricultural University, Coimbatore (Tamil Nadu), India
| | - B. Anita
- Tamil Nadu Agricultural University, Coimbatore (Tamil Nadu), India
| | - A. Lakshmanan
- Tamil Nadu Agricultural University, Coimbatore (Tamil Nadu), India
| | - A. Shanthi
- Tamil Nadu Agricultural University, Coimbatore (Tamil Nadu), India
| | - G. Karthikeyan
- Tamil Nadu Agricultural University, Coimbatore (Tamil Nadu), India
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Latha M, Raja K, Subramanian KS, Govindaraju K, Karthikeyan M, Lakshmanan A, Srivignesh S, Kumuthan MS. Polyvinyl alcohol (PVA) nanofibre matrix encapsulated with tebuconazole fungicide: a smart delivery system against dry root rot disease of black gram. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04509-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sharmila DJS, Lakshmanan A. Molecular dynamics study of plant bioactive nutraceutical keto-Curcumin encapsulated in medium chain triglyceride oil-in-Water nanoemulsion that are stabilized by globular whey proteins. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lakshmanan A, Akasov RA, Sholina NV, Demina PA, Generalova AN, Gangadharan A, Sardar DK, Lankamsetty KB, Khochenkov DA, Khaydukov EV, Gudkov SV, Jayaraman M, Jayaraman S. Nanocurcumin-Loaded UCNPs for Cancer Theranostics: Physicochemical Properties, In Vitro Toxicity, and In Vivo Imaging Studies. Nanomaterials (Basel) 2021; 11:2234. [PMID: 34578550 PMCID: PMC8471946 DOI: 10.3390/nano11092234] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/06/2021] [Accepted: 08/16/2021] [Indexed: 11/20/2022]
Abstract
Formulation of promising anticancer herbal drug curcumin as a nanoscale-sized curcumin (nanocurcumin) improved its delivery to cells and organisms both in vitro and in vivo. We report on coupling nanocurcumin with upconversion nanoparticles (UCNPs) using Poly (lactic-co-glycolic Acid) (PLGA) to endow visualisation in the near-infrared transparency window. Nanocurcumin was prepared by solvent-antisolvent method. NaYF4:Yb,Er (UCNP1) and NaYF4:Yb,Tm (UCNP2) nanoparticles were synthesised by reverse microemulsion method and then functionalized it with PLGA to form UCNP-PLGA nanocarrier followed up by loading with the solvent-antisolvent process synthesized herbal nanocurcumin. The UCNP samples were extensively characterised with XRD, Raman, FTIR, DSC, TGA, UV-VIS-NIR spectrophotometer, Upconversion spectrofluorometer, HRSEM, EDAX and Zeta Potential analyses. UCNP1-PLGA-nanocurcumin exhibited emission at 520, 540, 660 nm and UCNP2-PLGA-nanocurmin showed emission at 480 and 800 nm spectral bands. UCNP-PLGA-nanocurcumin incubated with rat glioblastoma cells demonstrated moderate cytotoxicity, 60-80% cell viability at 0.12-0.02 mg/mL marginally suitable for therapeutic applications. The cytotoxicity of UCNPs evaluated in tumour spheroids models confirmed UCNP-PLGA-nanocurcumin therapeutic potential. As-synthesised curcumin-loaded nanocomplexes were administered in tumour-bearing laboratory animals (Lewis lung cancer model) and showed adequate contrast to enable in vivo and ex vivo study of UCNP-PLGA-nanocurcumin bio distribution in organs, with dominant distribution in the liver and lungs. Our studies demonstrate promise of nanocurcumin-loaded upconversion nanoparticles for theranostics applications.
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Affiliation(s)
- Anbharasi Lakshmanan
- Department of Nuclear Physics, Guindy Campus, University of Madras, Chennai 600025, Tamil Nadu, India;
| | - Roman A. Akasov
- I M Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (N.V.S.); (E.V.K.)
- Federal Scientific Research Center, “Crystallography and Photonics”, Russian Academy of Sciences, Leninskiy Prospekt 59, 119333 Moscow, Russia;
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, RAS, 117997 Moscow, Russia;
| | - Natalya V. Sholina
- I M Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (N.V.S.); (E.V.K.)
- Federal Scientific Research Center, “Crystallography and Photonics”, Russian Academy of Sciences, Leninskiy Prospekt 59, 119333 Moscow, Russia;
| | - Polina A. Demina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, RAS, 117997 Moscow, Russia;
| | - Alla N. Generalova
- Federal Scientific Research Center, “Crystallography and Photonics”, Russian Academy of Sciences, Leninskiy Prospekt 59, 119333 Moscow, Russia;
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, RAS, 117997 Moscow, Russia;
| | - Ajithkumar Gangadharan
- Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX 78249, USA; (A.G.); (D.K.S.)
- Department of Natural Sciences, Texas Agriculture and Mechanical University, One University Way, San Antonio, TX 78224, USA
| | - Dhiraj K. Sardar
- Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX 78249, USA; (A.G.); (D.K.S.)
- Department of Natural Sciences, Texas Agriculture and Mechanical University, One University Way, San Antonio, TX 78224, USA
| | - Krishna Bharat Lankamsetty
- Federal State Budgetary Scientific Institution “Federal Scientific Agroengineering Center VIM” (FSAC VIM), 109428 Moscow, Russia;
| | - Dmitry A. Khochenkov
- FSBI “N.N. Blokhin National Medical Research Center for Oncology”, Ministry of Health of the Russian Federation, Kashirskoe Shosse 24, 115478 Moscow, Russia;
- Medicinal Chemistry Center, Togliatti State University, Belorusskaya Str. 14, 445020 Togliatti, Russia
| | - Evgeny V. Khaydukov
- I M Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (N.V.S.); (E.V.K.)
- Federal Scientific Research Center, “Crystallography and Photonics”, Russian Academy of Sciences, Leninskiy Prospekt 59, 119333 Moscow, Russia;
| | - Sergey V. Gudkov
- Biophotonics Center, Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilova St. 38, 119991 Moscow, Russia;
- Department of Closed Artificial Agroecosystems for Crop Production, Federal State Budgetary Scientific Institution “Federal Scientific Agroengineering Center VIM” (FSAC VIM), 5 First Institutskiy pr-d, 109428 Moscow, Russia
| | - Manonmani Jayaraman
- Department of Chemistry, Quaid-E-Millath Government College for Women, Chennai 600002, Tamil Nadu, India;
| | - Senthilselvan Jayaraman
- Department of Nuclear Physics, Guindy Campus, University of Madras, Chennai 600025, Tamil Nadu, India;
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Warnock A, Szatkowski L, Lakshmanan A, Lee L, Kelsall W. Surgical management of patent ductus arteriosus in pre-term infants - a british paediatric surveillance study. BMC Pediatr 2021; 21:270. [PMID: 34107888 PMCID: PMC8187455 DOI: 10.1186/s12887-021-02734-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 05/21/2021] [Indexed: 11/18/2022] Open
Abstract
Background This study aimed to provide UK data describing the incidence of patent ductus arteriosus (PDA) surgery in the neonatal population, including: pre-ligation management, and outcomes until discharge. We used British Paediatric Surveillance Unit (BPSU) methodology; collecting data via questionnaires for preterm neonates undergoing PDA ligation (PDAL) between 1st Sept 2012 – 30th Sept 2013. Infants born less than 37 weeks gestation, who underwent PDAL prior to discharge home, with no other structural cardiac abnormality, were included. Information collected included: patient demographics, pre and post-operative clinical characteristics, pre-operative medical management, post-operative complications and outcome. Results Over the study, 263 infants underwent PDAL an incidence of 3.07 per 10,000 live births. 88% were born extremely preterm (< 28 weeks) and 60% were male. The commonest reasons for ligation were inability to wean respiratory support (83.7%) and haemodynamically significant PDA (87.8%). Pre-operatively 65.7% received medical therapy. Surgery was performed at a median age of 33 days (range 9-260, IQR 24-48); the corrected age was less than 31 + 6 week in 50.6% babies at PDAL. Most, (90%), of procedures were open ligation; only 9 (3.4%) were catheter occlusions (PDACO). 20.5% of patients had post-operative complications. The 30-day mortality was 3%, with 93.5% surviving to hospital discharge. Conclusion This study showed there was little consensus over medical and surgical management of the PDA or timing of surgery. Supplementary Information The online version contains supplementary material available at 10.1186/s12887-021-02734-9.
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Affiliation(s)
- A Warnock
- Neonatal Unit, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - L Szatkowski
- Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, UK
| | - A Lakshmanan
- Neonatal Unit, University Hospitals of Coventry and Warwickshire, Coventry, UK
| | - L Lee
- Neonatal Unit, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - W Kelsall
- Neonatal Unit, Cambridge University Foundation Trust, Cambridge, CB2 2QQ, UK.
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Lakshmanan A, Surendran P, Sakthy Priya S, Balakrishnan K, Geetha P, Rameshkumar P, Hegde TA, Vinitha G, Kannan K. Investigations on structural, optical, dielectric, electronic polarizability, Z-scan and antibacterial properties of Ni/Zn/Fe2O4 nanoparticles fabricated by microwave-assisted combustion method. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112794] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Wang C, Gupte-Singh K, Belli A, Lane D, Lakshmanan A, Norden A. Cost of adverse events (AEs) with second-line (2L) immuno-oncology agents (IO) and chemotherapy (CHEMO) in advanced non-small cell lung cancer (aNSCLC) in the real-world. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz449.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Waintraub SE, Isaacs C, Norden AD, Graham DA, McNamara DM, O'Neill SC, Lakshmanan A, Wu T, Maresca A, Pecora AL, Goy AH, Goldberg SL. Abstract P4-14-05: Confirmation of the TAILORx 21-gene expression trial using a real world observational database. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p4-14-05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: The TAILORx study (NCT00310180)(TRx) has demonstrated the efficacy of endocrine therapy alone in early stage, lymph node negative, hormone receptor positive, her2neu oncogene negative breast cancer harboring an intermediate recurrence score (RS) on a 21-gene profile (OncotypeDx), obviating the need for adjuvant chemotherapy in a large subset of women. The study randomized and followed 6711 patients (pts) and required 9 years to reach its conclusion endpoints. The availability of the electronic health record (EHR) permits automated reviews, facilitating more rapid “real world” hypothesis testing (but not a replacement for randomized clinical trials), especially when there are clear variations in common practice patterns. However physician bias in treatment selection needs to be considered.
Methods: A retrospective review of the Cota Observational Cancer database, drawn from EHRs, of female pts with breast cancer who were 18 to 75 years of age; had hormone-receptor–positive, human epidermal growth factor receptor 2 (HER2)–negative, axillary node–negative breast cancer harboring an OncotypeDx RS 11-25 receiving adjuvant therapy following surgical resection of a 11-50 mm primary tumor (similar to TRx eligibility).
Results: 1009 pts from 23 cancer centers (107 oncologists) were identified, 850 (84.2%) received adjuvant endocrine therapy alone (E) and 159 (15.8%) received adjuvant chemoendocrine therapy (CE) as part of standard care (no randomization). 285 pts were age <50 yrs (E:218, CE:67) and 601 pts has RS 16-25 (E:453, CE:148). Treatment selection was imbalanced with oncologists more likely to utilize CE in younger pts (median age E: 59 yrs, CE: 53 yrs; p<0.01), larger tumors (median tumor size E: 16mm, CE: 20mm; p<0.001) and higher RS (median RS E: 16, CE: 21; p<0.001). With a median follow-up for survival since diagnosis of 3.7 years, the Kaplan-Meier estimated 5 yr overall survival rates were 98.9% with E and 97.8% with CE (p=0.23); the corresponding 5-yr OS in TRx were E: 98% and C: 98.1%. With a median 1.7 years follow-up for recurrence, 19 pts have suffered a disease distant or local recurrence (E: 13, CE: 6) yielding a 5-year recurrence-free survival of E: 95.2% and CE: 91% (p=0.05); the corresponding TRx result was E: 96.9% and CE: 97%. The 5-yr invasive disease-free survival (IDFS = death, local/distant, second primary) with 32 events was E: 92.7% and CE: 81.9% (p= 0.05); corresponding TRx E: 92.8 % and CE: 93.1%. Given the imbalance in treatment allocations, a multivariate analysis was performed, with older age (<0.001), CE choice (<0.006) and larger tumor size (p<0.05) remaining significant, but not increased RS (p=0.16) for 5-year IDFS. Among women age <50 with RS 16-25 (E: 118; CE: 60) the 5-yr IDFS was E: 95% and CE: 94%; the corresponding RS 16-20 TRx E: 92% and CE: 94.7% and RS 21-25 E: 86.3% and CE: 92.1%.
Conclusions: Using a real world data source, endocrine therapy alone appears to yield excellent 5-yr survival rates among pts with 21-gene RS 11-25 similar to the TAILORx trial. Treatment selection bias (with perceived higher risk pts allocated to CE) and shorter median follow-up limits full confirmation by this dataset.
Citation Format: Waintraub SE, Isaacs C, Norden AD, Graham DA, McNamara DM, O'Neill SC, Lakshmanan A, Wu T, Maresca A, Pecora AL, Goy AH, Goldberg SL. Confirmation of the TAILORx 21-gene expression trial using a real world observational database [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P4-14-05.
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Affiliation(s)
- SE Waintraub
- John Theurer Cancer Center at Hackensack University Medical Center, Hackensack, NJ; Georgetown Lombardi Comprehensive Cancer Center, Washington, DC; Cota Inc, New York, NY
| | - C Isaacs
- John Theurer Cancer Center at Hackensack University Medical Center, Hackensack, NJ; Georgetown Lombardi Comprehensive Cancer Center, Washington, DC; Cota Inc, New York, NY
| | - AD Norden
- John Theurer Cancer Center at Hackensack University Medical Center, Hackensack, NJ; Georgetown Lombardi Comprehensive Cancer Center, Washington, DC; Cota Inc, New York, NY
| | - DA Graham
- John Theurer Cancer Center at Hackensack University Medical Center, Hackensack, NJ; Georgetown Lombardi Comprehensive Cancer Center, Washington, DC; Cota Inc, New York, NY
| | - DM McNamara
- John Theurer Cancer Center at Hackensack University Medical Center, Hackensack, NJ; Georgetown Lombardi Comprehensive Cancer Center, Washington, DC; Cota Inc, New York, NY
| | - SC O'Neill
- John Theurer Cancer Center at Hackensack University Medical Center, Hackensack, NJ; Georgetown Lombardi Comprehensive Cancer Center, Washington, DC; Cota Inc, New York, NY
| | - A Lakshmanan
- John Theurer Cancer Center at Hackensack University Medical Center, Hackensack, NJ; Georgetown Lombardi Comprehensive Cancer Center, Washington, DC; Cota Inc, New York, NY
| | - T Wu
- John Theurer Cancer Center at Hackensack University Medical Center, Hackensack, NJ; Georgetown Lombardi Comprehensive Cancer Center, Washington, DC; Cota Inc, New York, NY
| | - A Maresca
- John Theurer Cancer Center at Hackensack University Medical Center, Hackensack, NJ; Georgetown Lombardi Comprehensive Cancer Center, Washington, DC; Cota Inc, New York, NY
| | - AL Pecora
- John Theurer Cancer Center at Hackensack University Medical Center, Hackensack, NJ; Georgetown Lombardi Comprehensive Cancer Center, Washington, DC; Cota Inc, New York, NY
| | - AH Goy
- John Theurer Cancer Center at Hackensack University Medical Center, Hackensack, NJ; Georgetown Lombardi Comprehensive Cancer Center, Washington, DC; Cota Inc, New York, NY
| | - SL Goldberg
- John Theurer Cancer Center at Hackensack University Medical Center, Hackensack, NJ; Georgetown Lombardi Comprehensive Cancer Center, Washington, DC; Cota Inc, New York, NY
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Geethalakshmi V, Bhuvaneswari K, Lakshmanan A, Sekhar NU. Assessment of Climate Change Impact on Rice Using Controlled Environment Chamber in Tamil Nadu, India. CURR SCI INDIA 2017. [DOI: 10.18520/cs/v112/i10/2066-2072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Wei D, Osman C, Dukhovny D, Romley J, Hall M, Chin S, Ho T, Friedlich PS, Lakshmanan A. Cost consciousness among physicians in the neonatal intensive care unit. J Perinatol 2016; 36:1014-1020. [PMID: 27467561 DOI: 10.1038/jp.2016.117] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 06/20/2016] [Accepted: 06/27/2016] [Indexed: 11/09/2022]
Abstract
OBJECTIVE The objectives of this study were (1) to describe the prevalence and correlates of cost consciousness among physician providers in neonatology and (2) to describe knowledge of cost of common medications, laboratory/imaging evaluations, hospitalization costs and reimbursements. STUDY DESIGN A 54-item survey was administered to members of the Section on Neonatal-Perinatal Medicine of the American Academy of Pediatrics. RESULTS Of the 602 participants, 37% reported cost consciousness in decision making. Adjusting for years in practice, gender, training level, type of practice setting and region of practice, formalized education about costs was associated with increased cost consciousness in practice (adjusted odds ratio (AOR): 3.4; 95% confidence interval (CI): 1.2 to 9.8). Working in a private practice setting was also associated with increased cost consciousness when ordering laboratory (AOR: 3.0; (95% CI: 1.2 to 7.6)) or imaging tests (AOR: 2.0; 95% CI: 1.0 to 4.8). CONCLUSIONS We found variation in knowledge of cost. Formal education about costs and working in a private practice setting were associated with increased cost consciousness.
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Affiliation(s)
- D Wei
- Neonatology, Children's Hospital Oakland, Oakland, CA, USA
| | - C Osman
- Center for Fetal and Neonatal Medicine, USC Division of Neonatal Medicine, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - D Dukhovny
- Pediatrics, Oregon Health and Science University, Portland, OR, USA
| | - J Romley
- Leonard D. Schaeffer Center for Health Policy and Economics, University of Southern California, Los Angeles, CA, USA
| | - M Hall
- Children's Hospital Association, Overland Park, KS, USA
| | - S Chin
- Center for Fetal and Neonatal Medicine, USC Division of Neonatal Medicine, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - T Ho
- Department of Neonatology, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - P S Friedlich
- Center for Fetal and Neonatal Medicine, USC Division of Neonatal Medicine, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - A Lakshmanan
- Center for Fetal and Neonatal Medicine, USC Division of Neonatal Medicine, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.,Leonard D. Schaeffer Center for Health Policy and Economics, University of Southern California, Los Angeles, CA, USA.,Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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Goldstein J, Lakshmanan A, Walters D, Zhang Z. Establishing an “Antegrade Only” Chronic Total Occlusion Intervention Program Without Onsite Surgical Backup at Mackay Base Hospital, Queensland and the Result of the First 8 Cases. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lakshmanan A, Ganeshkumar P, Mohan SR, Hemamalini M, Madhavan R. Epidemiological and clinical pattern of dermatomycoses in rural India. Indian J Med Microbiol 2015; 33 Suppl:134-6. [PMID: 25657132 DOI: 10.4103/0255-0857.150922] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Superficial fungal infections are most common in tropical and subtropical countries. In this study, 297 suspected superficial fungal infection cases were identified among 15,950 patients screened. The collected samples (skin, nail, and hair) were subjected to direct microscopy with potassium hydroxide and cultured on Sabourauds dextrose agar to identify the fungal species. The prevalence of superficial fungal infection was 27.6% (82/297), dermatophytosis was 75.6% (62/82), and non-dermatophytosis was 24.4% (20/82). Among the isolated dermatophytes, Trichophyton rubrum was the commonest species (79%) and Candida (60%) the commonest non-dermatophytic species. Tinea corporis was the commonest (78%) clinical presentation.
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Affiliation(s)
| | - P Ganeshkumar
- Department of Community Medicine, Employee State Insurance Corporation Medical College and Post-graduate Institute of Medical Science and Research, Chennai, India
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Abstract
Intraorbital organic foreign bodies pose a diagnostic and management challenge to ophthalmologists. A high degree of suspicion of an orbital foreign body is needed when patients present with injuries to the eyelids and orbit. We present a case of retained intraorbital wooden foreign body which was initially undetected. A 10-year-old boy presented to the eye casualty with signs and symptoms suggestive of orbital cellulitis. He was started on intravenous antibiotics and urgent CT of the orbits did not reveal any foreign bodies. There was spontaneous extrusion of a wooden foreign body through the upper lid two days later, followed by spontaneous resolution of symptoms. Wood has a density similar to air and fat and can be difficult to distinguish from soft tissue in both a plain X-ray film and a computed tomogram. Clinicians should be alerted to the possibility of retention of an intraorbital foreign body in all patients presenting with periorbital trauma. The clinician should also obtain a careful history of the type of injury and should examine the patient in detail. In cases where a wooden foreign body is suspected, investigation by magnetic resonance imaging is preferred.
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Affiliation(s)
- A Lakshmanan
- Department of Ophthalmology, James Paget Hospital, Great Yarmouth, UK.
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Lakshmanan A. A Case Study for Reactor Network Synthesis: The Vinyl Chloride Process. Comput Chem Eng 1997. [DOI: 10.1016/s0098-1354(97)00145-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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