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Rao PS, Reed K, Modi N, Handler D, de Guex KP, Yu S, Kagan L, Reiss R, Narayanan N, Peloquin CA, Lardizabal A, Vinnard C, Thomas TA, Xie YL, Heysell SK. Isoniazid urine spectrophotometry for prediction of serum pharmacokinetics in adults with TB. IJTLD Open 2024; 1:90-95. [PMID: 38655375 PMCID: PMC11037464 DOI: 10.5588/ijtldopen.23.0361] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
BACKGROUND Isoniazid (INH) is an important drug in many TB regimens, and unfavorable treatment outcomes can be caused by suboptimal pharmacokinetics. Dose adjustment can be personalized by measuring peak serum concentrations; however, the process involves cold-chain preservation and laboratory techniques such as liquid chromatography (LC)/mass spectrometry (MS), which are unavailable in many high-burden settings. Urine spectrophotometry could provide a low-cost alternative with simple sampling and quantification methods. METHODS We enrolled 56 adult patients on treatment for active TB. Serum was collected at 0, 1, 2, 4, 6, and 8 h for measurement of INH concentrations using validated LC-MS/MS methods. Urine was collected at 0-4, 4-8, and 8-24 h intervals, with INH concentrations measured using colorimetric methods. RESULTS The median peak serum concentration and total serum exposure over 24 h were 4.8 mg/L and 16.4 mg*hour/L, respectively. Area under the receiver operator characteristic curves for urine values predicting a subtherapeutic serum concentration (peak <3.0 mg/L) were as follows: 0-4 h interval (AUC 0.85, 95% CI 0.7-0.96), 0-8 h interval (AUC 0.85, 95% CI 0.71-0.96), and 0-24 h urine collection interval (AUC 0.84, 95% CI 0.68-0.96). CONCLUSION Urine spectrophotometry may improve feasibility of personalized dosing in high TB burden regions but requires further study of target attainment following dose adjustment based on a urine threshold.
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Affiliation(s)
- P S Rao
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA
| | - K Reed
- School of Arts and Sciences, University of Virginia, Charlottesville, VA
| | - N Modi
- Public Health Research Institute and Global Tuberculosis Institute, Rutgers New Jersey Medical School, Newark, NJ
| | - D Handler
- Public Health Research Institute and Global Tuberculosis Institute, Rutgers New Jersey Medical School, Newark, NJ
| | - K Petros de Guex
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA
| | - S Yu
- Department of Pharmaceutics and Center of Excellence for Pharmaceutical Translational Research and Education, Ernest Mario School of Pharmacy, Rutgers State University of New Jersey, Newark, NJ
| | - L Kagan
- Department of Pharmaceutics and Center of Excellence for Pharmaceutical Translational Research and Education, Ernest Mario School of Pharmacy, Rutgers State University of New Jersey, Newark, NJ
| | - R Reiss
- Public Health Research Institute and Global Tuberculosis Institute, Rutgers New Jersey Medical School, Newark, NJ
| | - N Narayanan
- Department of Pharmaceutics and Center of Excellence for Pharmaceutical Translational Research and Education, Ernest Mario School of Pharmacy, Rutgers State University of New Jersey, Newark, NJ
| | - C A Peloquin
- College of Pharmacy and Emerging Pathogens Institute, University of Florida, Gainesville, FL, USA
| | - A Lardizabal
- Public Health Research Institute and Global Tuberculosis Institute, Rutgers New Jersey Medical School, Newark, NJ
| | - C Vinnard
- Public Health Research Institute and Global Tuberculosis Institute, Rutgers New Jersey Medical School, Newark, NJ
| | - T A Thomas
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA
| | - Y L Xie
- Public Health Research Institute and Global Tuberculosis Institute, Rutgers New Jersey Medical School, Newark, NJ
| | - S K Heysell
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA
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Agrawal RK, Amaresh Rao M, Brian M, Chowdary GKB, Gayatri K, Krishnaji Rao M, Sambasiva Rao P, Namineni S, Srinivasa Rao N, Sikri BR, Syed S, Gawron S, Agarwal DR, Lakshmi K, Ramaiah M. Baseline Knowledge of Rare Diseases in India - A Survey. ACTA ACUST UNITED AC 2019. [DOI: 10.23937/2643-4571/1710008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Sambasiva Rao P, Ashalu KC, Dev GJ, Ravi Kumar N, Srinivas PVSS, Thomas BV, Narsaiah B. Efficient method for the synthesis of 1,2,3-triazole functionalized isoxazolidine derivatives by 1,3-dipolar cycloaddition of nitrones with terminal olefins. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2016.1271133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- P. Sambasiva Rao
- Fluoroorganic Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India
| | - K. Chinna Ashalu
- Fluoroorganic Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India
| | - G. Jitender Dev
- Fluoroorganic Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India
| | - N. Ravi Kumar
- Fluoroorganic Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India
| | - P. V. S. S. Srinivas
- Fluoroorganic Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India
| | - B. V. Thomas
- Fluoroorganic Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India
| | - B. Narsaiah
- Fluoroorganic Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India
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Raju MS, Elkana M, Failbus P, Palla JP, Hembrom UK, Rao PS. Correlates of Defaulting from MDT among Leprosy Patients. Indian J Lepr 2016; 87:241-248. [PMID: 29762953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In order to analyse the factors of demographic as well as disease related variables and their correlation with Rate of Defaulting (ROD) from Multi Drug Therapy (MDT) among leprosy patients, secondary data have been collected from 3,579 new cases registered for MDT, during a period of 4 years from 2007 to 2010 in four leprosy hospitals/ treatment centers across the four high endemic states viz. Uttar Pradesh, Chhattisgarh; Maharashtra and Andhra Pradesh. Year wise percentage of patients defaulted was calculated on aggregate as well as with reference to each centre and cross tabulated with demographic and disease related factors. Findings show that out of the total 3,579 new cases, 1944,(54.3%) defaulted with variation across centers ranged from 44 to 66 percent. Comparison of ROD against type of leprosy indicated that MB types defaulted (55.7%) more than PB (50.6%) types, (statistically significant difference, (p=0,04). ROD of male patients across the centers ranged from 45% to 67.7% in comparison with 42.4% to 61.5% of female patients. A-statistically significant difference (p=6.04) was found between the overall ROD of males (56.35%) and females (51.47%). The ROD among those with more severe disabilities (WHO Gr-2) ranged between 44% to 67.5% across the centers, while the same among those'with less severe disabilities (Gr-0&1) ranged from 42.6 to 72.7 percent. Comparison of ROD against severity of disability was found statistically significant only across 2 centers. No statistically significant variation was found when ROD of adult patients with refeince to each centr ranged between (43.6% to 65.4%) was compared with the same of children ranged beeIen (36.2% to 69.3%). Across each of these categories and centers,'the ROD remained consistent over the ,4 years. Based on the above findings'this may be concluded that male sex and MB types are significant correlates of default from treatment. Severity of disabilities plays significant role only in certain areas, probably due to other interfering factors, which needs to be further investiged.
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Sharma SK, Thomas J, Pandian MS, Rao PS, Gartia RK, Singhvi AK. Exploring stable thermoluminescence signal in natural Barite (BaSO4) for retrospective dosimetry. Appl Radiat Isot 2015; 105:198-203. [PMID: 26325582 DOI: 10.1016/j.apradiso.2015.08.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 08/25/2015] [Accepted: 08/25/2015] [Indexed: 11/26/2022]
Abstract
We explore the possible use of Barite (BaSO4) for radiation dosimetry and geochronology using thermoluminescence technique. Natural Barite with Mn as an impurity has a glow peak at 608K with a minimum detectable dose of 1.45±0.12mGy. This peak shows ~35% fading on 30 days of storage time and is photo-bleachable with excellent reproducibility on repeated read-out. The sensitivity changes with dose and evidence of athermal fading is also seen. We infer that the signal can be used for both retrospective dosimetry and geochronology of young deposits extending to 20ka.
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Affiliation(s)
- Suchinder K Sharma
- AMO-Physics Division, Physical Research Laboratory, Ahmedabad 380009, India.
| | | | - M S Pandian
- Pondicherry University, Puducherry 605 014, India
| | - P S Rao
- Pondicherry University, Puducherry 605 014, India
| | - R K Gartia
- Manipur University, Imphal 795003, India
| | - Ashok K Singhvi
- AMO-Physics Division, Physical Research Laboratory, Ahmedabad 380009, India
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Sahoo NK, Sahu M, Rao PS, Ghosh G. Development and Validation of Liquid Chromatography- Mass Spectroscopy/Mass Spectroscopy Method for Quantitative Analysis of Naproxen in Human Plasma after Liquid-Liquid Extraction. TROP J PHARM RES 2014. [DOI: 10.4314/tjpr.v13i9.17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Sambasiva Rao P, Malla Reddy G, Kurumurthy C, Veeraswamy B, Santhosh Kumar G, Shanthan Rao P, Narsaiah B. An Efficient Protocol for the Synthesis of Novel 1,2,3-Triazole Substituted 4 H-Chromene Derivatives. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- P. Sambasiva Rao
- Fluoroorganic Division; Indian Institute of Chemical Technology; Tarnaka Hyderabad 500607 India
| | - G. Malla Reddy
- Fluoroorganic Division; Indian Institute of Chemical Technology; Tarnaka Hyderabad 500607 India
| | - C. Kurumurthy
- Fluoroorganic Division; Indian Institute of Chemical Technology; Tarnaka Hyderabad 500607 India
| | - B. Veeraswamy
- Fluoroorganic Division; Indian Institute of Chemical Technology; Tarnaka Hyderabad 500607 India
| | - G. Santhosh Kumar
- Fluoroorganic Division; Indian Institute of Chemical Technology; Tarnaka Hyderabad 500607 India
| | - P. Shanthan Rao
- Fluoroorganic Division; Indian Institute of Chemical Technology; Tarnaka Hyderabad 500607 India
| | - B. Narsaiah
- Fluoroorganic Division; Indian Institute of Chemical Technology; Tarnaka Hyderabad 500607 India
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Sambasiva Rao P, Kurumurthy C, Veeraswamy B, Santhosh Kumar G, Poornachandra Y, Ganesh Kumar C, Vasamsetti SB, Kotamraju S, Narsaiah B. Synthesis of novel 1,2,3-triazole substituted-N-alkyl/aryl nitrone derivatives, their anti-inflammatory and anticancer activity. Eur J Med Chem 2014; 80:184-91. [DOI: 10.1016/j.ejmech.2014.04.052] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 04/14/2014] [Accepted: 04/15/2014] [Indexed: 11/25/2022]
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Santhosh Kumar G, Kurumurthy C, Sambasiva Rao P, Veeraswamy B, Shanthan Rao P, Narsaiah B. A Facile Approach for the Synthesis of Novel 1,2,4-Triazolo[4,3-a]Pyridine Derivatives in Single Step. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1977] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- G. Santhosh Kumar
- Fluoroorganic Division, Indian Institute of Chemical Technology; Tarnaka Hyderabad 500607 India
| | - C. Kurumurthy
- Fluoroorganic Division, Indian Institute of Chemical Technology; Tarnaka Hyderabad 500607 India
| | - P. Sambasiva Rao
- Fluoroorganic Division, Indian Institute of Chemical Technology; Tarnaka Hyderabad 500607 India
| | - B. Veeraswamy
- Fluoroorganic Division, Indian Institute of Chemical Technology; Tarnaka Hyderabad 500607 India
| | - P. Shanthan Rao
- Fluoroorganic Division, Indian Institute of Chemical Technology; Tarnaka Hyderabad 500607 India
| | - B. Narsaiah
- Fluoroorganic Division, Indian Institute of Chemical Technology; Tarnaka Hyderabad 500607 India
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10
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Ratnakar Reddy K, Sambasiva Rao P, Jitender Dev G, Poornachandra Y, Ganesh Kumar C, Shanthan Rao P, Narsaiah B. Synthesis of novel 1,2,3-triazole/isoxazole functionalized 2H-Chromene derivatives and their cytotoxic activity. Bioorg Med Chem Lett 2014; 24:1661-3. [DOI: 10.1016/j.bmcl.2014.02.069] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 02/19/2014] [Accepted: 02/25/2014] [Indexed: 12/15/2022]
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11
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Sambasiva Rao P, Kurumurthy C, Veeraswamy B, Poornachandra Y, Ganesh Kumar C, Narsaiah B. Synthesis of novel 5-(3-alkylquinolin-2-yl)-3-aryl isoxazole derivatives and their cytotoxic activity. Bioorg Med Chem Lett 2014; 24:1349-51. [PMID: 24507927 DOI: 10.1016/j.bmcl.2014.01.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 12/23/2013] [Accepted: 01/16/2014] [Indexed: 10/25/2022]
Abstract
The propargyl alcohol on reaction with aldoxime and NaOCl in DCM gave exclusively (3-arylisoxazol-5-yl) methanol 1. The compound 1 was oxidized to an aldehyde 2 followed by reaction with aniline resulted in Schiff's base 3. The compounds 3 were further reacted with various aldehydes having α-hydrogen using molecular iodine as catalyst and which yielded 5-(3-alkylquinolin-2-yl)-3-aryl isoxazole derivatives 4. All the final compounds 4 were screened against four human cancer cell lines (A549, COLO 205, MDA-MB 231 and PC-3) and among these compounds 4n showed potent cytotoxicity against all the cell lines at IC50 values of <12 μM.
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Affiliation(s)
- P Sambasiva Rao
- Fluoroorganic Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India
| | - C Kurumurthy
- Fluoroorganic Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India
| | - B Veeraswamy
- Fluoroorganic Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India
| | - Y Poornachandra
- Medicinal Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India
| | - C Ganesh Kumar
- Medicinal Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India
| | - B Narsaiah
- Fluoroorganic Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India.
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12
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Veeraswamy B, Santhosh Kumar G, Sambasiva Rao P, Kurumurthy C, Narsaiah B. Studies on Synthesis of Novel Pyrido[3,2-e]tetrazolo[1,5-c]pyrimidine Derivatives and Their Antimicrobial Activity. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.2108] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- B. Veeraswamy
- Fluoroorganic division; Indian Institute of Chemical Technology; Tarnaka Hyderabad 500007 India
| | - G. Santhosh Kumar
- Fluoroorganic division; Indian Institute of Chemical Technology; Tarnaka Hyderabad 500007 India
| | - P. Sambasiva Rao
- Fluoroorganic division; Indian Institute of Chemical Technology; Tarnaka Hyderabad 500007 India
| | - C. Kurumurthy
- Fluoroorganic division; Indian Institute of Chemical Technology; Tarnaka Hyderabad 500007 India
| | - B. Narsaiah
- Fluoroorganic division; Indian Institute of Chemical Technology; Tarnaka Hyderabad 500007 India
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Nagender P, Reddy GM, Rao PS, Kurumurthy C, Rao PS, Narsaiah B. Synthesis of Novel Imidazo[1,2- a]pyrimidin-5(1 H)-one Derivatives by Intramolecular Cycloisomerization of 2-Amino-3-alkynylpyrimidin-4(3 H)-one in the Presence of Aqueous Base. CHEM LETT 2013. [DOI: 10.1246/cl.130454] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- P. Nagender
- Fluoroorganic Division, Indian Institute of Chemical Technology
| | - G. Malla Reddy
- Fluoroorganic Division, Indian Institute of Chemical Technology
| | | | - C. Kurumurthy
- Fluoroorganic Division, Indian Institute of Chemical Technology
| | - P. Shanthan Rao
- Fluoroorganic Division, Indian Institute of Chemical Technology
| | - B. Narsaiah
- Fluoroorganic Division, Indian Institute of Chemical Technology
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Kumar GS, Kurumurthy C, Veeraswamy B, Rao PS, Rao PS, Narsaiah B. An Efficient Multi-component Synthesis of 6-Amino-3-methyl-4-Aryl-2,4- dihydropyrano[2,3-c]Pyrazole-5-carbonitriles. ORG PREP PROCED INT 2013. [DOI: 10.1080/00304948.2013.816220] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Rao PS, Reddy KR, Nagender P, Kumar RN, Rao PS, Narsaiah B. Indium Triflate-promoted Synthesis of Novel 1,2,3-Triazole-, and Isoxazole-substituted Xanthene-1,8(2H)-dione Derivatives. CHEM LETT 2013. [DOI: 10.1246/cl.130134] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | | | - P. Nagender
- Fluoroorganic Division, Indian Institute of Chemical Technology
| | | | | | - Banda Narsaiah
- Fluoroorganic Division, Indian Institute of Chemical Technology
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Sambasiva Rao P, Kurumurthy C, Veeraswamy B, Santhosh Kumar G, Shanthan Rao P, Pamanji R, Venkateswara Rao J, Narsaiah B. Synthesis of novel 2-alkyl triazole-3-alkyl substituted quinoline derivatives and their cytotoxic activity. Bioorg Med Chem Lett 2013; 23:1225-7. [PMID: 23352638 DOI: 10.1016/j.bmcl.2013.01.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 12/18/2012] [Accepted: 01/04/2013] [Indexed: 10/27/2022]
Abstract
The propargyl alcohol on reaction with alkylazides under Sharpless conditions through click chemistry concept gave exclusively 1,4-disubstituted triazoles 2. The compounds 2 were oxidized to aldehydes 3 followed by reaction with aniline resulted Schiff's bases 4. The compounds 4 was further reacted with various aldehydes having α-hydrogen using molecular iodine as a catalyst and obtained 2-alkyl triazole-3-alkyl substituted quinoline derivatives 5. All the final compounds were screened against four human cancer cell lines (THP-1, Colo205, U937 & HeLa) and promising compounds have been identified.
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Affiliation(s)
- P Sambasiva Rao
- Fluoro Organic Division, Indian Institute of Chemical Technology, Hyderabad 500 607, India
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Bhagyaraju B, Sambasiva Rao P, Swu T. Chlorido(4-methylpyridin-2-amine-κ N1)(2-{[(4-methylpyridin-2-yl)imino-κ N]methyl}phenolato-κ O)copper(II). Acta Crystallogr Sect E Struct Rep Online 2012; 68:m1523. [PMID: 23468733 PMCID: PMC3588768 DOI: 10.1107/s1600536812047198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 11/16/2012] [Indexed: 11/15/2022]
Abstract
In the title complex, [Cu(C13H11N2O)Cl(C6H8N2)], the CuII atom adopts a distorted tetrahedral geometry being coordinated by the phenolic O atom and the azomethine N atom of the Schiff base ligand N-salicylidene 2-aminopyridine, and by the 2-aminopyridine N atom and a Cl atom. The pyridyl N atom of the Schiff base and the imino N atom of the 4-methyl-pyridine-2-ylimino ligand are not involved in the coordination. There is an intramolecular N—H⋯N hydrogen bond involving the pyridine N atom and the amino group of the 2-aminopyridine ligand. In the crystal, molecules are linked via N—H⋯Cl hydrogen bonds, forming chains propagating along [001].
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Muntaz Begum S, Rao MC, Aparna Y, Rao PS, Ravikumar RVSSN. Spectroscopic investigations of Fe3+ doped poly vinyl alcohol (PVA) capped ZnSe nanoparticles. Spectrochim Acta A Mol Biomol Spectrosc 2012; 98:100-104. [PMID: 22983205 DOI: 10.1016/j.saa.2012.08.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 06/06/2012] [Accepted: 08/10/2012] [Indexed: 06/01/2023]
Abstract
Fe(3+) doped poly vinyl alcohol (PVA) capped ZnSe nanoparticles have been synthesized by using chemical method at room temperature. The prepared sample is characterized by X-ray diffraction, optical, photoluminescence (PL), electron paramagnetic resonance (EPR) and FT-IR techniques. Different physical parameters are evaluated by using measured values of refractive index and density. From the X-ray diffraction pattern, the average crystallite size is calculated by using Scherrer's formula and it is about 9 nm. Optical absorption spectrum reveals that the Fe(3+) ion enter into the lattice as octahedral symmetry. Crystal field (Dq) and inter-electronic repulsion parameters (B, C) are evaluated for Fe(3+) doped ZnSe nanoparticles as Dq=720, B=720 and C=2500 cm(-1). Photoluminescence spectrum of Fe(3+) doped ZnSe exhibits emission bands in UV and yellow regions. EPR spectrum showed various resonance signals at g=7.3, 3.5 and 2.0. FT-IR spectrum of Fe(3+) doped PVA capped ZnSe indicates the presence of O-H, C-H, C=C and C=O molecular groups.
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Affiliation(s)
- Sk Muntaz Begum
- Department of Physics, Andhra Loyola College, Vijayawada 520 008, India
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Woodside KJ, Merion RM, Leichtman AB, de los Santos R, Arrington CJ, Rao PS, Sung RS. Utilization of kidneys with similar kidney donor risk index values from standard versus expanded criteria donors. Am J Transplant 2012; 12:2106-14. [PMID: 22702349 DOI: 10.1111/j.1600-6143.2012.04146.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
With the shortage of standard criteria donor (SCD) kidneys, efficient expanded criteria donor (ECD) kidney utilization has become more vital. We investigated the effects of the ECD label on kidney recovery, utilization and outcomes. Using data from the Scientific Registry of Transplant Recipients from November 2002 to May 2010, we determined recovery and transplant rates, and modeled discard risk, for kidneys within a range of kidney donor risk index (KDRI) 1.4-2.1 that included both SCD and ECD kidneys. To further compare similar quality kidneys, these kidneys were again divided into three KDRI intervals. Overall, ECD kidneys had higher recovery rates, but lower transplant rates. However, within each KDRI interval, SCD and ECD kidneys were transplanted at similar rates. Overall, there was increased risk for discard for biopsied kidneys. SCD kidneys in the lower two KDRI intervals had the highest risk of discard if biopsied. Pumped kidneys had a lower risk of discard, which was modulated by KDRI for SCD kidneys but not ECD kidneys. Although overall ECD graft survival was worse than SCD, there were no differences within individual KDRI intervals. Thus, ECD designation adversely affects neither utilization nor outcomes beyond that predicted by KDRI.
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Affiliation(s)
- K J Woodside
- Department of Surgery, Case Western Reserve University, Cleveland, OH, USA.
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Sambasiva Rao P, Kurumurthy C, Veeraswamy B, Santhosh kumar G, Narsaiah B, Pranay Kumar K, Murthy USN, Karnewar S, Kotamraju S. Synthesis, antimicrobial and cytotoxic activities of novel 4-trifluoromethyl-(1,2,3)-thiadiazolo-5-carboxylic acid hydrazide Schiff’s bases. Med Chem Res 2012. [DOI: 10.1007/s00044-012-0168-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Manochitra P, Manikandan N, Murugavel S, Sreeshailam R, Sambasiva Rao P. Aqua-(2,2'-bipyridine-κ²N,N')(2-methyl-malonato-κ²O¹,O³)copper(II) dihydrate. Acta Crystallogr Sect E Struct Rep Online 2012; 68:m884-m885. [PMID: 22807729 PMCID: PMC3393161 DOI: 10.1107/s1600536812024889] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Accepted: 05/31/2012] [Indexed: 06/01/2023]
Abstract
In the title compound, [Cu(C₄H₄O₄)(C₁₀H₈N₂)(H₂O)]·2H₂O, the Cu(II) ion displays a slightly distorted square-pyramidal coordination. The water mol-ecule at the apical position shows a long bond [Cu-O = 2.276 (2) Å]. The basal plane is formed by two N atoms of the 2,2'-bipyridine ligand and two carboxyl-ate O atoms from a malonate group. The five-membered chelate ring is almost planar [maximum deviation = -0.006 (2) Å], while the six-membered chelate ring defined by the malonate ligand adopts a distorted boat conformation. In the crystal, Cu(II) complex mol-ecules and lattice water mol-ecules are connected by O-H⋯O and C-H⋯O hydrogen bonds. The crystal packing is further stabilized by π-π inter-actions [centroid-centroid distances = 3.563 (2)-3.828 (2) Å].
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Affiliation(s)
- P. Manochitra
- Department of Chemistry, Pondicherry University, Puducherry 605 014, India
| | - N. Manikandan
- Department of Physics, Bharathidasan Engineering College, Nattrampalli, Vellore 635 854, India
| | - S. Murugavel
- Department of Physics, Thanthai Periyar Government Institute of Technology, Vellore 632 002, India
| | - R. Sreeshailam
- Department of Chemistry, Pondicherry University, Puducherry 605 014, India
| | - P. Sambasiva Rao
- Department of Chemistry, Pondicherry University, Puducherry 605 014, India
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Rama Krishna C, Venkata Reddy C, Udayachandran Thampy US, Chandrasekhar AV, Reddy YP, Sambasiva Rao P, Ravikumar RVSSN. Synthesis and spectroscopic characterization of Cu(II) containing chlorocadmiumphosphate Cd(HPO4)Cl·[H3N(CH2)6NH3]0.5 crystals. Spectrochim Acta A Mol Biomol Spectrosc 2012; 85:160-164. [PMID: 22020167 DOI: 10.1016/j.saa.2011.09.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2011] [Revised: 09/15/2011] [Accepted: 09/27/2011] [Indexed: 05/31/2023]
Abstract
Chlorocadmiumphosphate Cd(HPO(4))Cl·[H(3)N(CH(2))(6)NH(3)](0.5) crystals containing Cu(II) ions have been successfully synthesized at room temperature by using organic amine 1,6-diamino hexane as a template. The samples are characterized by X-ray powder diffraction, Thermal and spectroscopic studies. These are crystallizes in the monoclinic crystal system with cell dimensions: a=1.7697, b=0.6576, c=1.9026nm and β=106.5°. FT-IR spectrum showed the absorption bands related to PO(4), NH(3)(+) ions and other organic molecule vibrations originated from the templated molecule. The prepared crystals are stable at room temperature and as well as up to around 300°C which were confirmed by thermal analysis. Optical absorption and EPR studies suggest that Cu(II) ion enters in to the lattice as tetragonally distorted octahedral symmetry, for which crystal field and spin-Hamiltonian parameters are calculated. Bonding parameters are suggesting that there exists partial covalent nature between Cu(II) ions and ligands.
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Affiliation(s)
- Ch Rama Krishna
- Department of Physics, Acharya Nagarjuna University, Nagarjuna Nagar 522 510, A.P., India
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Muntaz Begum S, Nirmala G, Ravindranadh K, Aswani T, Rao M, Sambasiva Rao P, Ravikumar R. Physical and spectral investigations of Mn2+ ions doped poly vinyl alcohol capped ZnSe nanoparticles. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.09.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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24
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Rao TR, Krishna CR, Reddy CV, Thampy USU, Reddy YP, Rao PS, Ravikumar RVSSN. Mixed alkali effect and optical properties of Ni2+ doped 20ZnO+xLi2O+(30-x)Na2O+50B2O3 glasses. Spectrochim Acta A Mol Biomol Spectrosc 2011; 79:1116-1122. [PMID: 21652259 DOI: 10.1016/j.saa.2011.04.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Revised: 03/27/2011] [Accepted: 04/15/2011] [Indexed: 05/30/2023]
Abstract
Optical and physical properties of Ni2+ doped 20ZnO+xLi2O+(30-x)Na2O+50B2O3 (5≤x≤25) glasses are carried out at room temperature. Powder XRD pattern of all the glass samples confirms the amorphous nature. Several physical parameters are evaluated for all the glasses with respect to the composition. The optical absorption spectra confirm the site symmetry of the Ni2+ doped glasses are near octahedral. Crystal field and inter-electronic repulsion parameters are also evaluated. It is interesting to observe that the optical band gap and Urbach energies exhibit the mixed alkali effect. The FT-IR spectral investigations of Ni2+ doped glasses exhibit characteristic vibrations of BO3 and BO4 units.
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Affiliation(s)
- T Raghavendra Rao
- Department of Physics, Acharya Nagarjuna University, Nagarjuna Nagar 522 510, AP, India
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Kurumurthy C, Sambasiva Rao P, Veera swamy B, Santhosh kumar G, Shanthan Rao P, Narsaiah B, Velatooru L, Pamanji R, Venkateswara Rao J. Synthesis of novel alkyltriazole tagged pyrido[2,3-d]pyrimidine derivatives and their anticancer activity. Eur J Med Chem 2011; 46:3462-8. [DOI: 10.1016/j.ejmech.2011.05.011] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Revised: 05/03/2011] [Accepted: 05/04/2011] [Indexed: 10/18/2022]
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26
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Kurumurthy C, Sambasiva Rao P, Veeraswamy B, Santhosh Kumar G, Shanthan Rao P, Kotamraju S, Vasamsetti SB, Choudhury C, Narsaiah B. A facile and single pot strategy for the synthesis of novel naphthyridine derivatives under microwave irradiation conditions using ZnCl2 as catalyst, evaluation of AChE inhibitory activity, and molecular modeling studies. Med Chem Res 2011. [DOI: 10.1007/s00044-011-9695-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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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Abstract
Onion (Allium cepa), a very commonly used vegetable, ranks third in the world production of major vegetables. Apart from imparting a delicious taste and flavour due to its pungency in many culinary preparations, it serves several medicinal purposes also. Processing and preservation of onion by suitable means is a major thrust area since a long time. The various kinds of treatments followed for dehydration of onion such as convective air drying, solar drying, fluidized bed drying, vacuum microwave drying, infrared drying and osmotic drying are reviewed here. These techniques are mainly used for preservation and value addition of onion. Several researchers have tried for decades to model the drying kinetics and quality parameters, which are also compiled here briefly.
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Affiliation(s)
- Jayeeta Mitra
- Department of Agricultural and Food Engineering, Indian Institute of Technology, Kharagpur, 721302 India
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Parthipan K, Ramesh H, Sambasiva Rao P. Molecular structure identification and position of a dopant ion in diaqua(2,2′-bipyridine)malonatozinc(II) by spectroscopic studies – II: VO(II). J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.02.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Parthipan K, Sambasiva Rao P. Molecular structural identification and position of Cu(II) ion in Diaqua(2,2′-bipyridine)malonatozinc(II): Spectroscopic studies. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.05.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Abstract
The objective of this study was to investigate the impact of bacterial biomass on the sorption and transport of three solutes (quinoline, naphthalene, and Ca) in a subsurface soil. Miscible displacement techniques were employed to measure sorption and transport of the above compounds during steady, saturated water flow in sterile and/or bacterium-inoculated soil columns. The soil was inoculated with either a quinoline-degrading bacterium, Pseudomonas sp. 3N3A isolate, or its mutant isolate, B53, which does not degrade quinoline. In soil columns inoculated with the B53 and 3N3A isolates, quinoline sorption was reduced by about 60 and 20%, respectively. In contrast, Ca sorption was minimally reduced, which indicated that biomass did not significantly alter the cation-exchange capacity of the soil. Biomass impacts on sorption were solute specific, even when the sorption mechanism for both quinoline and Ca was similar. Thus, the differential response is attributed to biomass-induced changes in quinoline speciation; an increase in pH at the sorbent-water interface would result in a larger proportion of the neutral species and a decrease in sorption. Sorption of naphthalene was reduced by about 30%, which was attributed to accessibility of hydrophobic regions. Minimal biosorption of all solutes indicated negligible biofacilitated transport. Alteration of the soil surfaces upon addition of bacterial biomass reduced sorption of quinoline and naphthalene, thereby enhancing transport.
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Affiliation(s)
- C A Bellin
- Soil and Water Science Department, University of Florida, Gainesville, Florida 32611
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31
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Avadhani A, Rao PS, Rao SK. Effect of tibial tunnel position on arthroscopically assisted anterior cruciate ligament reconstruction using bone-patellar tendon-bone grafts: a prospective study. Singapore Med J 2010; 51:413-417. [PMID: 20593146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
INTRODUCTION The aim of this research was to study the effect of the tibial tunnel position in anterior cruciate ligament (ACL) reconstruction using bone-patellar tendon-bone (BPTB) grafts in ensuring optimal knee functioning. METHODS A prospective study was conducted on 41 patients who underwent arthroscopically assisted ACL reconstruction using a BPTB graft and who were followed up for a minimum period of two years. The radiographic position of the tibial tunnel was compared with the clinical outcome using the International Knee Documentation Committee (IKDC) and modified Lysholm knee scores at two years after surgery. RESULTS Six out of eight patients with a fair outcome based on the modified Lysholm score and five out of eight patients with an abnormal outcome based on the IKDC score had their tibial tunnel within the 10 percent to 25 percent anteroposterior width of the tibial plateau. The tibial tunnel of patients with a fair Lysholm outcome (mean 22.2 percent) was significantly anterior compared to that of those with an excellent (mean 38.1 percent) and good (mean 34.1 percent) outcome (p is less than 0.01). The analysis using the IKDC score showed a similar trend. CONCLUSION Placing the tibial tunnel in the anterior 25 percent of the tibial plateau is associated with a poor knee outcome. More predictable results can be achieved through 35 percent to 46 percent anteroposterior placement of the tibial tunnel.
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Affiliation(s)
- A Avadhani
- Department of Orthopaedics, Kasturba Medical College, Madhav Nagar, Manipal 576104, Karnataka, India.
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32
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Axelrod DA, McCullough KP, Brewer ED, Becker BN, Segev DL, Rao PS. Kidney and pancreas transplantation in the United States, 1999-2008: the changing face of living donation. Am J Transplant 2010; 10:987-1002. [PMID: 20420648 DOI: 10.1111/j.1600-6143.2010.03022.x] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The waiting list for kidney transplantation continued to grow between 1999 and 2008, from 41 177 to 76 089 candidates. However, active candidates represented the minority of this increase (36 951-50 624, a 37% change), while inactive candidates increased over 500% (4226-25 465). There were 5966 living donor (LD) and 10 551 deceased donor (DD) kidney transplants performed in 2008. The total number of pancreas transplants peaked at 1484 in 2004 and has declined to 1273. Although the number of LD transplants increased by 26% from 1999 to 2008, the total number peaked in 2004 at 6647 before declining 10% by 2008. The rate of LD transplantation continues to vary significantly as a function of demographic and geographic factors, including waiting time for DD transplant. Posttransplant survival remains excellent, and there appears to be greater use of induction agents and reduced use of corticosteroids in LD recipients. Significant changes occurred in the pediatric population, with a dramatic reduction in the use of LD organs after passage of the Share 35 rule. Many strategies have been adopted to reverse the decline in LD transplant rates for all age groups, including expansion of kidney paired donation, adoption of laparoscopic donor nephrectomy and use of incompatible LD.
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Affiliation(s)
- D A Axelrod
- Department of Surgery, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA.
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Madathil LP, Rao PS. Gutka syndrome and oral submucous fibrosis: Few observations. Indian J Cancer 2010; 47:470. [DOI: 10.4103/0019-509x.73550] [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: 11/04/2022]
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Reddy RRS, Reddy SL, Rao PS, Frost RL. Optical absorption and EPR studies on tenorite mineral. Spectrochim Acta A Mol Biomol Spectrosc 2010; 75:28-31. [PMID: 19926334 DOI: 10.1016/j.saa.2009.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2009] [Accepted: 09/04/2009] [Indexed: 05/28/2023]
Abstract
Optical absorption and EPR studies of the mineral tenorite, a cupric oxide which originated from Mexico and contains 54.40 wt% of CuO. EPR spectral results indicate two Cu(II) closely interacting ions to give a d(2) type structure. The calculated spin Hamiltonian at room temperature and liquid nitrogen temperature is g=2.160 and D=125 G. The intensity of resonance line is not the same in low and high field regions. The optical absorption spectrum is due to Cu(II) in which three sets of energies indicating Cu(II) in two independent tetragonal C(4v) symmetry, in addition to d(2) structure of octahedral coordination. The octahedral and tetragonal field parameters are compared with those reported for several other copper containing minerals.
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Reddy SL, Fayazuddin M, Reddy NCG, Ahmad A, Reddy GS, Rao PS, Reddy BJ, Frost RL. Characterisation of bhringaraj and guduchi herb by ICP-MS analysis, optical absorption, infrared and EPR spectroscopic methods. Spectrochim Acta A Mol Biomol Spectrosc 2008; 71:31-38. [PMID: 18280774 DOI: 10.1016/j.saa.2007.11.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2007] [Revised: 11/07/2007] [Accepted: 11/15/2007] [Indexed: 05/25/2023]
Abstract
Leaves of bhringaraj and guduchi herb of Kadapa district of Andhra Pradesh, India, are dried and powdered. ICP-MS analysis of samples indicates that copper is present in both the samples. An EPR study of guduchi sample also confirms the presence of Fe(III) whereas Eclipta alba confirms the presence of Fe(III), Mn(II) and Cu(II). Optical absorption spectrum of guduchi indicates that Cu(II) is present in rhombically distorted octahedral environment. NIR and IR results are due to carbonate fundamentals.
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Affiliation(s)
- S Lakshmi Reddy
- Department of Physics, S.V.D. College, Kadapa 516003, India.
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37
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Vandana KE, Bairy I, Rao PS, Kabir B. Prolonged Fever in HIV Disease due to Salmonella enetritidis. Indian J Med Microbiol 2008. [DOI: 10.1016/s0255-0857(21)01830-2] [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: 10/21/2022]
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38
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Selvakumar PN, Natarajan B, Rao PS, Subramanian P. EPR studies of Cu(II) doped glycine lithium sulphate single crystals - a case of low hyperfine coupling constant. Cryst Res Technol 2008. [DOI: 10.1002/crat.200811146] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Pandey V, Rao PS, Rao SK, Acharya KKV. Monocular blindness due to central retinal artery occlusion in bipolar hemireplacement arthroplasty of the hip. Singapore Med J 2008; 49:e96-e97. [PMID: 18418515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Though rare, perioperative loss of vision after non-ocular surgeries is a disastrous complication. This has been reported after spine surgery or cardiopulmonary bypass surgery. We present an otherwise healthy 54-year-old man who underwent bipolar hemireplacement for a fractured neck of femur, and developed perioperative monocular visual loss due to central retinal artery occlusion, a complication hitherto unreported in hip replacement surgeries. The possible aetiological factors and the measures to prevent this complication are discussed.
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Affiliation(s)
- V Pandey
- Department of Orthopaedics, Kasturba Medical College, Manipal, Karnataka 576104, India.
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Abstract
Deceased organ donation has increased rapidly since 2002, coinciding with implementation of the Organ Donation Breakthrough Collaborative. The increase in donors has resulted in a corresponding increase in the numbers of kidney, liver, lung and intestinal transplants. While transplants for most organs have increased, discard and nonrecovery rates have not improved or have increased, resulting in a decrease in organs recovered per donor (ORPD) and organs transplanted per donor (OTPD). Thus, the expansion of the consent and recovery of incremental donors has frequently outpaced utilization. Meaningful increases in multicultural donation have been achieved, but donations continue to be lower than actual rates of transplantation and waiting list registrations for these groups. To counteract the decline in living donation, mechanisms such as paired donation and enhanced incentives to organ donation are being developed. Current efforts of the collaborative have focused on differentiating ORPD and OTPD targets by donor type (standard and expanded criteria donors and donors after cardiac death), utilization of the OPTN regional structure and enlisting centers to increase transplants to match increasing organ availability.
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Affiliation(s)
- R S Sung
- Scientific Registry of Transplant Recipients, University of Michigan, Ann Arbor, MI, USA.
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Vandana KE, Bairy I, Rao PS, Kabir B. Prolonged fever in HIV disease due to Salmonellaenetritidis. Indian J Med Microbiol 2008; 26:399-400. [DOI: 10.4103/0255-0857.43563] [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: 11/04/2022]
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Fayazuddin M, Reddy NCG, Reddy GS, Reddy SL, Rao PS, Frost RL. Optical absorption and EPR studies on beaverite mineral. Spectrochim Acta A Mol Biomol Spectrosc 2007; 68:807-10. [PMID: 17428726 DOI: 10.1016/j.saa.2006.12.063] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2006] [Accepted: 12/15/2006] [Indexed: 05/14/2023]
Abstract
The behaviour of transition metal ions in beaverite mineral has been studied by spectroscopic techniques such as electron paramagnetic resonance and absorption spectroscopy in the UV-vis and NIR regions. The ground state of Cu(II) ion in beaverite is confirmed as (2)B(1g) since g(parallel)>g(perpendicular) (2.42>2.097). A resonance noticed at g=2.017 is ascribed to Fe(III) impurity. Two sets of three characteristic bands observed in the optical absorption spectra are assigned to the same transitions, (2)B(1g)-->(2)A(1g), (2)B(1g)-->(2)B(2) and (2)B(1g)-->(2)E(g) of Cu(II) ion in tetragonal field. The presence of Fe(III) bands is supportive evidence for iron impurity in the mineral. Mid infrared spectrum is due to overtones and combination tones of water and hydroxyl groups.
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Affiliation(s)
- Md Fayazuddin
- Department of Physics, SVD College, Suryapet, Nalgonda District, India
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Khadilkar UN, Khadilkar NP, Rao PS, Chakravorty S, Goel G. Superficial angiomyxoma of the external ear not associated with Carney's complex: a case report. Kathmandu Univ Med J (KUMJ) 2007; 5:546-549. [PMID: 18604093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Superficial angiomyxomas are rare tumours and multiple tumours occurring in the external ear are invariably associated with Carney's complex. In the present study, a solitary superficial angiomyxoma was found in a 20 year old lady; and there was no evidence of any of the components of Carney's complex at the time of presentation or at the end of 2 years of follow-up, after the surgical excision of the tumour.
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Affiliation(s)
- U N Khadilkar
- Department of Pathology, Kasturba Medical College, Mangalore, Karnataka State, India.
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Mithira S, Natarajan B, Deepa S, Ravikumar R, Sambasiva Rao P. Molecular structural identification of Cu(II) ion in Diaquamalonatozinc(II): Anisotropic behavior with low hyperfine coupling constant. J Mol Struct 2007. [DOI: 10.1016/j.molstruc.2006.11.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Rao PS, Ansari MF, Gavane AG, Pandit VI, Nema P, Devotta S. Seasonal variation of toxic benzene emissions in petroleum refinery. Environ Monit Assess 2007; 128:323-8. [PMID: 17057993 DOI: 10.1007/s10661-006-9315-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2006] [Accepted: 05/08/2006] [Indexed: 05/12/2023]
Abstract
Petroleum refineries are largest chemical industries that are responsible for the emission of several pollutants into the atmosphere. Benzene is among the most important air pollutants that are emitted by petroleum refineries, since they are involved in almost every refinery process. Volatile organic compounds (VOCs) are a major group of air pollutants, which play a critical role in atmospheric chemistry. These contribute to toxic oxidants, which are harmful to ecosystem, human health and atmosphere. The variability of pollutants is an important factor in determining human exposure to these chemicals. The ambient air concentrations of benzene were measured in several sites around the Digboi petroleum refinery, near the city of Gowahati in northeast India, during winter and summer 2004. The seasonal and spatial variations of the ambient air concentrations of this benzene were investigated and analyzed. An estimation of the contribution of the refinery to the measured atmospheric levels of benzene was also performed. The ambient air mixing ratios of benzene in a large area outside the refinery was generally low, in ppbv range, much lower than the ambient air quality standards. This article presents the temporal and spatial variation of air pollution in and around petroleum refinery and showed that no health risk due to benzene is present in the areas adjacent to the refinery.
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Affiliation(s)
- P S Rao
- Scientist, Air Pollution Control Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440 020, India.
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Miles CD, Schaubel DE, Jia X, Ojo AO, Port FK, Rao PS. Mortality experience in recipients undergoing repeat transplantation with expanded criteria donor and non-ECD deceased-donor kidneys. Am J Transplant 2007; 7:1140-7. [PMID: 17331109 DOI: 10.1111/j.1600-6143.2007.01742.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Nearly one-quarter of the kidney transplant waiting list is composed of repeat transplantation candidates. Survival following retransplantation using expanded criteria donor (ECD) kidneys has not been adequately studied. Using data from the Scientific Registry of Transplant Recipients, we analyzed mortality after retransplantation with ECD and non-ECD deceased-donor kidneys. Adult patients who experienced graft failure and were relisted for transplantation between 1995 and 2004 were studied (n=9641). Follow-up began at the date of relisting and continued until death or the end of the observation period (December 31, 2004), with censoring at living-donor transplantation. Sequential stratification (an extension of Cox regression) was used to compare mortality between patients receiving an ECD retransplant and those remaining on the waiting list or receiving a non-ECD retransplant (conventional therapy). Of 2908 retransplantations, 292 used ECD kidneys. Survival after ECD retransplantation was approximately equal to that of conventional therapy, with an adjusted hazard ratio of 0.98 (p=0.88). In contrast, non-ECD retransplant recipients experienced a significant reduction in mortality (HR=0.44; p<0.0001). Based on these national data, recipients of ECD retransplantation do not have a survival advantage relative to conventional therapy, whereas non-ECD retransplantation is associated with a significant survival advantage.
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Affiliation(s)
- C D Miles
- Department of Medicine, University of Michigan, Ann Arbor, MI, USA
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47
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Abstract
The medial collateral ligament (MCL) is the most commonly injured ligament of the knee joint. Proximal MCL tears occur more frequently than do distal ones. We report a 28-year-old man with a valgus injury of his left knee joint after a fall from a motorcycle. Magnetic resonance imaging of the affected knee joint revealed complete avulsion of the superficial MCL from both its femoral and tibial insertions. The meniscofemoral portion of the deep part of the MCL was also torn and the medial meniscus was subluxated. Such a pattern, an MCL tear with subluxation of the medial meniscus, is rare.
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Affiliation(s)
- A M Naik
- Kasturba Medical College Hospital, Manipal, Udupi District, Karnataka State, India.
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48
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Sankar B, Natarajan B, Mithira S, Anandhalakshmi H, Rao PS. Single crystal EPR study of Mn(II) doped MgRb2(SO4)2·6H2O: A case of interstitial site. Cryst Res Technol 2007. [DOI: 10.1002/crat.200610792] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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49
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Khadilkar NP, Rao PS. Retrospective study of lymphadenopathy by FNAC in a tertiary hospital in North-East India. Indian J Public Health 2006; 50:239. [PMID: 17444054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023] Open
Affiliation(s)
- N P Khadilkar
- Department of Pathology, Sikkim Manipal Institute of Medical Sciences, Tadong, E. Sikkim.
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Sambasiva Rao P, Subramanian S. The effect of charge-compensation vacancies in the orientation ofDtensors in Cr(III) doped hexaimidazole-zinc(II) dichloride tetrahydrate. Mol Phys 2006. [DOI: 10.1080/00268978000100801] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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