126
|
Bridgel P, Forrest D, Parboosingh J, Menon S, Semple L, Wilde H, Larsen C, Bernier F, Lyon M, Montgomery M. 477 Newborn cystic fibrosis (CF) screening in Canada: considerations regarding the selection of a molecular genetic assay. J Cyst Fibros 2006. [DOI: 10.1016/s1569-1993(06)80401-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
127
|
Menon S, Su Q, Grobe R. Velocity half-sphere model for multiple light scattering in turbid media. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2005; 72:041910. [PMID: 16383423 DOI: 10.1103/physreve.72.041910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2005] [Indexed: 05/05/2023]
Abstract
We extend the traditional diffusion theory by distinguishing between the energy radiance in the forward and backward directions at each point in space. This approach leads to a new effective source for the diffusion equation that is nonzero for an anisotropic light source. It differs significantly from the diffusion theory for short source-detector spacings. We derive an analytical solution for the two lowest-order velocity moments of the radiance.
Collapse
|
128
|
Menon S, Su Q, Grobe R. Generalized diffusion solution for light scattering from anisotropic sources. OPTICS LETTERS 2005; 30:1542-4. [PMID: 16007801 DOI: 10.1364/ol.30.001542] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The traditional diffusion theory, often used for isotropic sources, becomes inaccurate at short source-detector spacings and cannot be applied to media with large absorption or with small scattering strengths. We show that for any type of source anisotropy, a Green's-function-based procedure can remove these limitations. The accuracy of the new approach is examined through a comparison with the numerical solution to the radiative transfer equation.
Collapse
|
129
|
Sane R, Kamat S, Menon S, Inamdar S, Mote M. Determination of rosuvastatin calcium in its bulk drug and pharmaceutical preparations by high-performance thin-layer chromatography. JPC-J PLANAR CHROMAT 2005. [DOI: 10.1556/jpc.18.2005.3.4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
130
|
Menon S. How Accurate Is Weight Estimation in the Emergency Department? Acad Emerg Med 2005. [DOI: 10.1197/j.aem.2005.03.496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
131
|
Menon S, Su Q, Grobe R. Determination of g and mu using multiply scattered light in turbid media. PHYSICAL REVIEW LETTERS 2005; 94:153904. [PMID: 15904148 DOI: 10.1103/physrevlett.94.153904] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2004] [Indexed: 05/02/2023]
Abstract
We propose an inversion scheme to reconstruct the scattering coefficient mu and the anisotropy factor g that characterize the optical properties of a turbid medium. It is based on a theory for the scattering of light inside the medium from an angularly collimated light source. We demonstrate the feasibility of this method using light scattering data obtained from a Monte Carlo simulation.
Collapse
|
132
|
Dighe VV, Gursale AA, Sane RT, Menon S, Patel PH. Quantitative Determination of Eugenol from Cinnamomum tamala Nees and Eberm. Leaf Powder and Polyherbal Formulation Using Reverse Phase Liquid Chromatography. Chromatographia 2005. [DOI: 10.1365/s10337-005-0527-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
133
|
Sane RT, Menon S, Pathak AR, Deshpande AY, Mahale M. Capillary Electrophoretic Determination of Gatifloxacin from Pharmaceutical Preparation. Chromatographia 2005. [DOI: 10.1365/s10337-005-0496-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
134
|
Sane RT, Menon S, Deshpande AY, Jain A. HPLC Determination and Pharmacokinetic Study of Valdecoxib in Human Plasma. Chromatographia 2005. [DOI: 10.1365/s10337-004-0442-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
135
|
Novakov T, Menon S, Kirchstetter TW, Koch D, Hansen JE. Aerosol organic carbon to black carbon ratios: Analysis of published data and implications for climate forcing. ACTA ACUST UNITED AC 2005. [DOI: 10.1029/2005jd005977] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
136
|
Sane R, Menon S, Shailajan S, Jaripatke K. High-performance thin-layer chromatographic analysis ofAsteracantha longifoliaNees. for determination of pharmacokinetics. JPC-J PLANAR CHROMAT 2004. [DOI: 10.1556/jpc.17.2004.6.17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
137
|
Trask D, Bock J, Goswami P, Menon S. Celecoxib and sulindac sulfide enhance the cytotoxic effect of standard chemotherapeutic agents and possess anti-tumor activity mediated by p21 cipl/waf1 expression. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.3186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
138
|
Sane R, Menon S, Mote M, Inamdar S, Menezes A. High-performance thin-layer chromatographic determination of aceclofenac in the bulk drug and in pharmaceutical preparations. JPC-J PLANAR CHROMAT 2004. [DOI: 10.1556/jpc.17.2004.3.15] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
139
|
Sane R, Menon S, Inamdar S, Mote M, Menezes A. Simultaneous determination of pioglitazone and glimepiride by high-performance thin-layer chromatography. JPC-J PLANAR CHROMAT 2004. [DOI: 10.1556/jpc.17.2004.2.14] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
140
|
Menon S, Hafeez H, Verjee T, Sivakumar R. Tachycardia in the presence of a pacemaker. Postgrad Med J 2004; 80:119, 122. [PMID: 14970308 PMCID: PMC1742915 DOI: 10.1136/pmj.2002.004036q] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
141
|
Massery M, Sammon K, Menon S, Cahalin L. COMPARING AIRWAY CLEARANCE EFFECTIVENESS USING A SUCTION MACHINE AND THE COUGHASSIST MACHINE FOR PATIENTS IN ACUTE REHABILITATION. Cardiopulm Phys Ther J 2003. [DOI: 10.1097/01823246-200314040-00015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
142
|
Menon S, Su Q, Grobe R. Bridging the microscopic and macroscopic theories for light reflected from disordered plane-parallel dielectric slabs. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2003; 68:046614. [PMID: 14683072 DOI: 10.1103/physreve.68.046614] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2003] [Indexed: 05/24/2023]
Abstract
For a system of randomly arranged plane-parallel dielectric layers with randomly varying index of refraction and width, we compare the reflection coefficient derived from the Maxwell equations with that of the Boltzmann theory. For a strictly monochromatic field this coefficient is an oscillatory function of the laser frequency. We show how suitable frequency or ensemble averaging permits a comparison of the two theories. The calculation of the usual Boltzmann scattering coefficient from microscopic parameters can be improved to permit a better agreement with the exact Maxwell data.
Collapse
|
143
|
Menon S, Su Q, Grobe R. Iterative approach to Maxwell equations for dielectric media of spatially varying refractive index. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2003; 67:046619. [PMID: 12786521 DOI: 10.1103/physreve.67.046619] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2002] [Indexed: 05/24/2023]
Abstract
We propose an iterative method to solve the Maxwell equations for a one-dimensional model system with spatially varying permittivity. We construct solutions that are iterative in the scattering order, equivalent to the number of scattering events along the forward and backward directions. A numerical implementation of this approach is also presented.
Collapse
|
144
|
|
145
|
Menon S, Su Q, Grobe R. Comparison of the Maxwell and Boltzmann theory for multilayered dielectric random media. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2002; 65:051917. [PMID: 12059603 DOI: 10.1103/physreve.65.051917] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2001] [Indexed: 05/23/2023]
Abstract
Based on the transfer matrix theory for electromagnetic fields, we develop a corresponding theory for intensity transport in a one-dimensional random medium. We show the conditions for which the Maxwell equations, the intensity transport theory, and the Boltzmann equation can lead to similar predictions. We generalize the transfer matrix theory to study intensity modulated waves and compare its predictions with those obtained from the Maxwell and Boltzmann equations.
Collapse
|
146
|
Nandraj S, Khot A, Menon S, Brugha R. A stakeholder approach towards hospital accreditation in India. Health Policy Plan 2001; 16 Suppl 2:70-9. [PMID: 11772992 DOI: 10.1093/heapol/16.suppl_2.70] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Accreditation has been recommended as a mechanism for assuring the quality of private sector health services in low-income countries, especially where regulatory systems are weak. A survey was conducted in Mumbai, India, in 1997-98 to elicit the views of the principal stakeholders on the introduction of accreditation and what form it should take. There was a high level of support for the classical features: voluntary participation, a standards-based approach to assessing hospital performance, periodic external assessment by health professionals, and the introduction of quality assurance measures to assist hospitals in meeting these standards. Hospital owners, professional bodies and government officials all saw potential - though different - advantages in accreditation: for owners and professionals it could give them a competitive edge in a crowded market, while government officials reckoned it could increase their influence over an unregulated private market. Areas of disagreement emerged; for example, hospital owners were opposed to government or third party payment bodies having a dominant role in running an accreditation system. The growing strength of a health service user representative lobby in Mumbai is an additional reason why this would be a suitable place for piloting such a system. The biggest obstacle to introducing accreditation in poorly resourced settings, such as India, is in how to finance it. The provisional support of the principal stakeholders for such a development, demonstrated in this study, will require a commitment from government and policymakers if the potential benefits of accreditation to the health of the population are to be realised.
Collapse
|
147
|
Fort MM, Cheung J, Yen D, Li J, Zurawski SM, Lo S, Menon S, Clifford T, Hunte B, Lesley R, Muchamuel T, Hurst SD, Zurawski G, Leach MW, Gorman DM, Rennick DM. IL-25 induces IL-4, IL-5, and IL-13 and Th2-associated pathologies in vivo. Immunity 2001; 15:985-95. [PMID: 11754819 DOI: 10.1016/s1074-7613(01)00243-6] [Citation(s) in RCA: 878] [Impact Index Per Article: 38.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We have characterized a cytokine produced by Th2 cells, designated as IL-25. Infusion of mice with IL-25 induced IL-4, IL-5, and IL-13 gene expression. The induction of these cytokines resulted in Th2-like responses marked by increased serum IgE, IgG(1), and IgA levels, blood eosinophilia, and pathological changes in the lungs and digestive tract that included eosinophilic infiltrates, increased mucus production, and epithelial cell hyperplasia/hypertrophy. In addition, our studies show that IL-25 induces Th2-type cytokine production by accessory cells that are MHC class II(high), CD11c(dull), and lineage(-). These results suggest that IL-25, derived from Th2 T cells, is capable of amplifying allergic type inflammatory responses by its actions on other cell types.
Collapse
|
148
|
Kalra V, Gulati S, Pandey RM, Menon S. West syndrome and other infantile epileptic encephalopathies--Indian hospital experience. Brain Dev 2001; 23:593-602. [PMID: 11701262 DOI: 10.1016/s0387-7604(01)00288-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Children with infantile epileptic encephalopathies comprising 3.5% of the Pediatric Neurology Clinic registrations in a tertiary care hospital were retrospectively analyzed. Data were retrieved from case records and analyzed for seizure semiology, prenatal and perinatal insults, developmental status and relevant investigations. The various therapeutic modalities and their influence on spasm frequency, long-term development and final seizure status were compared. The two primary outcome variables analyzed included final seizure status and developmental outcome. Of the 94 infantile epileptic encephalopathies, West syndrome was the commonest (55.3%), of which two thirds were symptomatic. Etiological factors were prenatal in 66.6% and perinatal in 33.3%. The initial response to ACTH was good in 54.5% with subsequent relapse in 27.8% and for prednisolone was 52.9 and 44.4%, respectively, compared to 25.3% spasms control with conventional antiepileptic drugs. Disease category of infantile epileptic encephalopathies evolved in 4, i.e. early myoclonic encephalopathy to West syndrome 1, early infantile epileptic encephalopathy to West syndrome 1, West syndrome to Lennox-Gastaut syndrome 2. Psychomotor retardation was seen in 88.2%, with 16.1% having normal development at onset of spasms. Microcephaly was associated with delayed development but did not influence final seizure outcome. Final seizure outcome was poor in children with delayed development at onset (adjusted odds ratio [OR]=4), delay in diagnosis >12 months (OR=2.27) and in children with Lennox-Gastaut syndrome (OR=4.75). ACTH/prednisolone and antiepileptic treatment versus antiepileptics alone showed a good final seizure response in 36.6% versus 20%. Development on follow up was delayed in children with initial psychomotor retardation (OR=23.4) and abnormal electroencephalogram (OR=7.46). Perinatal factors constituted one third of symptomatic West syndrome. The use of ACTH/corticosteroids resulted in good initial spasm control though final seizure outcome and development were unaffected. Prednisolone had similar response to ACTH in spasm control but higher subsequent relapse rate. Vigabatrin was useful though often unaffordable. The identification of a neurometabolic etiology, though uncommon, has significant therapy implications. Delay in diagnosis was common and negatively influenced final seizure outcome.
Collapse
MESH Headings
- Adrenocorticotropic Hormone/therapeutic use
- Anticonvulsants/therapeutic use
- Child, Hospitalized/statistics & numerical data
- Developmental Disabilities/epidemiology
- Electroencephalography
- Epilepsies, Myoclonic/drug therapy
- Epilepsies, Myoclonic/epidemiology
- Epilepsies, Myoclonic/therapy
- Epilepsy, Generalized/drug therapy
- Epilepsy, Generalized/epidemiology
- Epilepsy, Generalized/therapy
- Female
- Humans
- India/epidemiology
- Infant
- Magnetic Resonance Imaging
- Male
- Microcephaly/epidemiology
- Predictive Value of Tests
- Prognosis
- Retrospective Studies
- Spasms, Infantile/drug therapy
- Spasms, Infantile/epidemiology
- Spasms, Infantile/therapy
- Tomography, Emission-Computed, Single-Photon
- Tomography, X-Ray Computed
- Treatment Outcome
Collapse
|
149
|
Ritter M, Menon S, Zhao L, Xu S, Shelby J, Barry WH. Functional importance and caffeine sensitivity of ryanodine receptors in primary lymphocytes. Int Immunopharmacol 2001; 1:339-47. [PMID: 11360934 DOI: 10.1016/s1567-5769(00)00002-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Calcium signaling patterns are important for the specific regulation of activation and effector function in lymphocytes. Studies of [Ca2+]i regulation in lymphocytes, including the involvement of ryanodine receptors (RyR) and the importance of caffeine-sensitive pools, have been carried out mainly in lymphocyte cell lines and the presence and functional importance of these pools in primary lymphocytes has not been addressed. Here we show by confocal microscopy that caffeine caused a prompt but transitory increase of [Ca2+]i in primary lymphocytes, an effect that was inhibited by pre-treatment with ryanodine. Furthermore, the increase of [Ca2+]i in CD4+ and CD8+ MLR T lymphocytes stimulated by 5 microg/ml concanavalin A was significantly inhibited by pretreatment with caffeine. In functional studies, caffeine decreased cytotoxicity against myocyte target cells which is probably related to an altered calcium signaling in CD8+ MLR lymphocytes. Caffeine also terminated spontaneous Ca2+ oscillations and induced a rise in [Ca2+]i in CD4- and CD8- MLR lymphocytes probably of B cell origin. These results demonstrate that caffeine alters Ca2+ signaling in primary lymphocytes, and suggest that RyR, probably the skeletal muscle receptor (RyR-1) and brain receptor (RyR-3), are involved in mediating this effect. It is also possible that blocking of inositol-1,4,5-triphosphate (IP3) receptors is involved in the effects of caffeine on lymphocyte activation.
Collapse
|
150
|
Abstract
Health professionals' knowledge of ethnic minority cultures and lifestyles was assessed to determine whether the respondents' cultural background and experience of working with ethnic minorities affected the health care delivered by them and to assess the need for training. Improving access to health services for ethnic minorities requires continuing education and training of all health professionals.
Collapse
|