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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] [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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Raju MS, Elkana M, Failbus P, Palla JP, Hembrom UK, Rao PS. Correlates of Defaulting from MDT among Leprosy Patients. INDIAN JOURNAL OF LEPROSY 2016; 87:241-248. [PMID: 29762953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [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] [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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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Naresh Kumar R, Malla Reddy G, Nagendar P, Kurumurthy C, Shanthan Rao P, Karnewar S, Kotamraju S, Narsaiah B. Synthesis of Novel Pyrido[3′,2′:4,5]furo[3,2- d]pyrimidine Derivatives and Their Cytotoxic Activity. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ravi Kumar A, Sathaiah G, Chandra Shekhar A, Raju K, Shanthan Rao P, Narsaiah B, Raju YK, Murthy USN. Synthesis of NovelN-Triazolo Methyl Substituted Fluoroquinolones and Their Antimicrobial Activity. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.2034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ravi Kumar A, Sathaiah G, Chandra Shekhar A, Raju K, Shanthan Rao P, Narsaiah B, Kanaka Raju Y, Murthy USN, Srimai V, Ramesh M, Parthasarathy T. Synthesis of 6-Fluoro-7-cyclic Amino-substituted Dicarboxylic Acid Quinolones and their Antibacterial Activity. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1889] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Chandra Shekhar A, Shanthan Rao P, Narsaiah B, Allanki AD, Sijwali PS. Emergence of pyrido quinoxalines as new family of antimalarial agents. Eur J Med Chem 2014; 77:280-7. [DOI: 10.1016/j.ejmech.2014.03.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 02/28/2014] [Accepted: 03/05/2014] [Indexed: 10/25/2022]
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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] [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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Chandra Shekhar A, Ravi Kumar A, Sathaiah G, Raju K, Srinivas PVSS, Shanthan Rao P, Narsaiah B. Aqueous Hydrofluoric Acid Catalyzed Facile Synthesis of 2,3,6-Substituted Quinoxalines. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1753] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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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] [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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Muntaz Begum S, Rao MC, Aparna Y, Rao PS, Ravikumar RVSSN. Spectroscopic investigations of Fe3+ doped poly vinyl alcohol (PVA) capped ZnSe nanoparticles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 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] [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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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] [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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Venkat Reddy G, Chandra Shekhar A, Ravi Kumar A, Sathaiah G, Narsaiah B, Shanthan Rao P. Facile Synthesis of Imidazole Fused Fluoroquinolones. J Heterocycl Chem 2012. [DOI: 10.1002/jhet.812] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Sathaiah G, Ravi Kumar A, Chandra Shekhar A, Raju K, Shanthan Rao P, Narsaiah B, Raghuram Reddy A, Lakshmi D, Sridhar B. Design and synthesis of positional isomers of 1-alkyl-2-trifluoromethyl-5 or 6-substituted benzimidazoles and their antimicrobial activity. Med Chem Res 2012. [DOI: 10.1007/s00044-012-0131-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Venkat Lingaiah BP, Yakaiah T, Ravi Kumar A, Sathaiah G, Chandra Shekhar A, Raju K, Shanthan Rao P, Narsaiah B, Murthy USN. Synthesis of novel optically pure α-amino acid functionalised-7-trifluoromethyl substituted quinolone derivatives and their antibacterial activity. Med Chem Res 2012. [DOI: 10.1007/s00044-012-0020-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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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. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 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] [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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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] [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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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Reddy CK, Raju LY, Srinivas PVSS, Rao PS, Shekharam T, Shailaja D. Preparation and characterization of core-shell nanoparticles containing poly(chlorotrifluoroethylene-co-ethylvinylether) as core. J Appl Polym Sci 2011. [DOI: 10.1002/app.34262] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Mitra J, Shrivastava SL, Rao PS. Onion dehydration: a review. Journal of Food Science and Technology 2011; 49:267-77. [PMID: 23729847 DOI: 10.1007/s13197-011-0369-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 03/28/2011] [Accepted: 04/01/2011] [Indexed: 10/18/2022]
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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