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Rathore CS, Dubey Y, Shrivastava A, Pathak P, Patil V. Opportunities of habitat connectivity for tiger (Panthera tigris) between Kanha and Pench National Parks in Madhya Pradesh, India. PLoS One 2012; 7:e39996. [PMID: 22815720 PMCID: PMC3398000 DOI: 10.1371/journal.pone.0039996] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Accepted: 05/31/2012] [Indexed: 11/19/2022] Open
Abstract
The Tiger (Panthera tigris) population in India has undergone a sharp decline during the last few years. Of the number of factors attributed to this decline, habitat fragmentation has been the most worrisome. Wildlife corridors have long been a subject of discussion amongst wildlife biologists and conservationists with contrasting schools of thought arguing their merits and demerits. However, it is largely believed that wildlife corridors can help minimize genetic isolation, offset fragmentation problems, improve animal dispersal, restore ecological processes and reduce man animal conflict. This study attempted to evaluate the possibilities of identifying a suitable wildlife corridor between two very important wildlife areas of central India--the Kanha National Park and the Pench National Park--with tiger as the focal species. Geographic Information System (GIS) centric Least Cost Path modeling was used to identify likely routes for movement of tigers. Habitat suitability, perennial water bodies, road density, railway tracks, human settlement density and total forest edge were considered as key variables influencing tiger movement across the Kanha-Pench landscape. Each of these variables was weighted in terms of relative importance through an expert consultation process. Using different importance scenarios, three alternate corridor routes were generated of which one was identified as the most promising for tiger dispersal. Weak links--where cover and habitat conditions are currently sub-optimal--were flagged on the corridor route. Interventions aimed at augmenting the identified corridor route have been suggested using accepted wildlife corridor design principles. The involvement of local communities through initiatives such as ecotourism has been stressed as a crucial long term strategy for conservation of the Kanha-Pench wildlife corridor. The results of the study indicate that restoration of the identified wildlife corridors between the two protected areas is technically feasible.
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Thakur S, Singh V, Palshetkar C, Nanal V, Parkar V, Pillay R, Shrivastava A, Rout P, Ramachandran K, Chatterjee A. Study of fusion in6,7Li+197Au at near barrier energies. EPJ WEB OF CONFERENCES 2011. [DOI: 10.1051/epjconf/20111716017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Palshetkar C, Santra S, Chatterjee A, Ramachandran K, Thakur S, Pandit S, Mahata K, Shrivastava A, Parkar V, Nanal V, Roy B, Jha V, Kalias S. Study of reactions with the weakly bound projectile 9Be with 89Y. EPJ WEB OF CONFERENCES 2011. [DOI: 10.1051/epjconf/20111703006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Shrivastava A, Murrin C, Kelleher C. P2-279 10-year mortality follow-up of maternal and paternal grandparents shows different patterns of association with their grandchildren's birth weights: the Lifeways Cross Generation Cohort Study. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976k.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Shrivastava A, Murrin C, Kelleher C. O1-5.4 Familial aggregation in nutrient intake patterns: comparing intergenerational and prenatal-postnatal effects in Lifeways Cross Generation Cohort Study. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976a.39] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Shrivastava A, Murrin C, Kelleher C. P2-474 Familial predictors of variability in pre-school children's health: the Lifeways Cross Generation Cohort Study. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976m.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Shrivastava A, Sakthivel S, Pitchumani B, Rathore A. A statistical approach for estimation of significant variables in wet attrition milling. POWDER TECHNOL 2011. [DOI: 10.1016/j.powtec.2011.03.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Shrivastava A, Dash PK, Tripathi NK, Sahni AK, Gopalan N, Lakshmana Rao PV. Evaluation of a commercial Dengue NS1 enzyme-linked immunosorbent assay for early diagnosis of dengue infection. Indian J Med Microbiol 2011; 29:51-5. [PMID: 21304196 DOI: 10.4103/0255-0857.76525] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
PURPOSE Dengue is one of the most serious mosquito-borne viral infections affecting tropical and subtropical countries in the world. Since there is no immunoprophylactic or specific antiviral therapy available, timely and rapid diagnosis plays a vital role in patient management and implementation of control measures. This paper evaluates a commercially available NS1 antigen capture ELISA vis-a-vis SD bioline Dengue NS1 antigen test for early detection of dengue virus. MATERIALS AND METHODS To evaluate a commercial NS1 antigen detection kit vis-a-vis SD bioline Dengue NS1 antigen test, a total of 91 clinical samples were tested. Virological investigations with regard to dengue virus, viz. NS1 antigen capture ELISA (Panbio, Australia), SD bioline Dengue NS1 antigen test, RT-PCR and virus isolation were performed. RESULTS Out of 91 samples, 24 (26%) were positive by NS1 antigen capture ELISA, 15 (16%) by SD bioline Dengue NS1 antigen test and 11(12%) positive by RT-PCR analysis. The RT-PCR-positive samples were further subjected to virus isolation and resulted in three isolates. The results of the Panbio NS1 antigen capture ELISA, SD bioline Dengue NS1 antigen test, RT-PCR and virus isolation were correlated among themselves. CONCLUSIONS The present study comprehensively established the utility of NS1 antigen ELISA in early diagnosis of dengue infection.
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Singla MK, Shrivastava A, Mukherjee KC, Sodhi K. Potentially fatal tricuspid valve aspergilloma detected after laparoscopic abdominal surgery. SOUTHERN AFRICAN JOURNAL OF ANAESTHESIA AND ANALGESIA 2011. [DOI: 10.1080/22201173.2011.10872789] [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]
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Rattay T, Shrivastava A, Higman DJ, Francombe J. Spontaneously ruptured splenic aneurysm in a young patient with Ehlers-Danlos syndrome. BMJ Case Rep 2011; 2011:2011/mar31_1/bcr0120113753. [PMID: 22700605 DOI: 10.1136/bcr.01.2011.3753] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
The authors describe a young patient with a history of type IV vascular Ehlers-Danlos syndrome (EDS) who underwent successful treatment for a spontaneous haemorrhage from a splenic artery aneurysm, and the authors would like to remind clinicians of the mortality and morbidity associated with vascular-type EDS.
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Abstract
Glaucoma care is more an art than science. The introduction of several new classes of glaucoma medications and the completion of many large randomized clinical trials have not changed this fact. While we now have better choices when initiating glaucoma therapy relative to our predecessors, the principles of glaucoma therapy have not changed much during this period. Debates continue regarding the utility of concepts such as “the monocular therapeutic trial,” “target intraocular pressure (IOP),” and “maximal medical therapy.” Our tools for detecting and following glaucomatous disease have improved but are not precise enough for us to prospectively predict which patients will do better or worse than others. Much attention has been given to disease stage, rate of progression, and compliance with medications but regular patient follow-up, an area that has received little attention, may be among the most important predictors of patient outcomes.
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Shrivastava A, Issarani R, Nagori B. Stability indicating high-performance liquid chromatography method for the estimation of artemether in capsule dosage forms. J Young Pharm 2011; 2:79-84. [PMID: 21331197 PMCID: PMC3035892 DOI: 10.4103/0975-1483.62220] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A new simple, sensitive, precise, and accurate high-performance liquid chromatography (HPLC) method of analysis for artemether both as a bulk drug and in capsule formulations was developed and validated. The method employed mobile phase acetonitrile (ACN) and buffer in the ratio 65:35 of pH 6.5 adjusted with tryethylamine. The linear regression analysis data for the calibration plots showed good linear relationship with r2 = 0.9996 in the concentration range 250-750 μg/ml. The mean value slope and intercept were 9355.5 and −93.5, respectively. The method was validated for precision, accuracy, and recovery studies. Limit of detection (LOD) and Limit of quantitation (LOQ) for artemether were found to be 21.83-750 μg/ml, respectively. The method has been successfully applied in the analysis of marketed capsule formulations. The presented method was found to be reliable to separate all the degradents from all the stress conditions with resolution of more than 1.5 showing that it is a stability indicating method.
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Shrivastava A. Recent Results on Fusion and Direct Reactions with Weakly Bound Stable Nuclei. EPJ WEB OF CONFERENCES 2011. [DOI: 10.1051/epjconf/20111703001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Shrivastava A, Purang P. Employee perceptions of performance appraisals: a comparative study on Indian banks. INTERNATIONAL JOURNAL OF HUMAN RESOURCE MANAGEMENT 2011. [DOI: 10.1080/09585192.2011.543639] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lodha R, Paul D, Nahar N, Bhagat VK, Joshi A, Lodha KM, Shrivastava A, Nandeshwar S. Association between reproductive factors and breast cancer in an urban set up at central India: A case-control study. Indian J Cancer 2011; 48:303-7. [DOI: 10.4103/0019-509x.84928] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Rao PS, Mhaisalkar VA, Shrivastava A, Kumar A, Chakrabarti T, Devotta S. Environmental impact of plantations in and around the petroleum refinery: a case study. ENVIRONMENTAL MONITORING AND ASSESSMENT 2010; 168:55-61. [PMID: 19626446 DOI: 10.1007/s10661-009-1091-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2008] [Accepted: 07/02/2009] [Indexed: 05/28/2023]
Abstract
Plantation or green belt (GB) grown around the factories and industrial premises improves the condition of land, mitigates air pollution (as the plants serve as a sink for pollutants and check the flow of dust, etc.), and reduces the level of noise pollution. The software developed by NEERI for the determination of the optimal width of GB in and around an industry is based on the pollution attenuation coefficient of selected plant species of deciduous trees existing in the region. The assessment of the impact of these plantations/green belts of 500-m width in and around a petroleum refinery in the west coast of India is evaluated for reducing/managing various waste generated, and it is observed that the overall efficiency is more than 60%.
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Batta P, Engel HM, Shrivastava A, Freeman K, Mian U. Effect of partial posterior vitreous detachment on retinal nerve fiber layer thickness as measured by optical coherence tomography. ACTA ACUST UNITED AC 2010; 128:692-7. [PMID: 20547945 DOI: 10.1001/archophthalmol.2010.99] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
OBJECTIVE To evaluate the effect of partially attached posterior vitreous detachments (pPVDs) at the optic disc on retinal nerve fiber layer (RNFL) thickness as measured by optical coherence tomography. METHODS A retrospective study was conducted using stored Stratus optical coherence tomography III scans of patients with suspected glaucoma from January 2003 to September 2006 at the Montefiore Medical Center, Bronx, New York. All scans were evaluated for vitreous attachments at the disc and were divided into control (without pPVD) and pPVD groups. The RNFL thickness was compared using the fast RNFL protocol. Patients were defined as glaucoma suspects based on clinical findings of either glaucomatous-appearing optic discs or elevated intraocular pressure. All study patients had normal Humphrey visual fields. RESULTS A total of 110 eyes from 110 patients were included; 59 were in the pPVD group and 51 were controls. Partial PVD was found in 40% of the glaucoma suspects. The mean RNFL thickness of eyes with pPVD was significantly broader than that of controls (101.6 microm vs 95.6 microm, respectively; P < .001). The average RNFL thickness of each quadrant was greater in the pPVD group than in the control group, with statistically significant differences in superior and inferior quadrants (P < .001 and P = .001, respectively). CONCLUSIONS More than one-third of this population of glaucoma suspects had a pPVD, indicating that this is a common phenomenon. The results suggest that RNFL thicknesses are greater in patients with pPVD than in controls. This may indicate a limitation of using RNFL thickness as a criterion for evaluating glaucomatous damage in patients with pPVD.
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Shrivastava A, Hayhoe MM, Pelz JB, Mruczek R. Influence of optic flow field restrictions and fog on perception of speed in a virtual driving environment. J Vis 2010. [DOI: 10.1167/5.8.139] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Derkx X, Rejmund F, Caamaño M, Schmidt KH, Audouin L, Bacri CO, Barreau G, Benlliure J, Casarejos E, Fernández-Domínguez B, Gaudefroy L, Golabek C, Jurado B, Lemasson A, Navin A, Rejmund M, Roger T, Shrivastava A, Schmitt C, Taieb J. Minor actinide fission induced by multi-nucleon transfer reaction in inverse kinematics. EPJ WEB OF CONFERENCES 2010. [DOI: 10.1051/epjconf/20100207001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Jha AK, Nikbakht M, Parashar G, Shrivastava A, Capalash N, Kaur J. Reversal of hypermethylation and reactivation of the RARβ2 gene by natural compounds in cervical cancer cell lines. Folia Biol (Praha) 2010; 56:195-200. [PMID: 21138650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Reactivation of tumour suppressor genes that have been silenced by promoter methylation is a very attractive molecular target for cancer therapy. The treatment of a squamous cervical cancer cell line, SiHa, with 20 μM curcumin and genistein resulted in demethylation of promoter of the RARβ2 gene and led to the reactivation of the gene. The degree of methylation as observed by MSP decreased as the time period of treatment was increased from 72 h to 6 days. In HeLa cells (an adenocarcinoma cervical cancer cell line) there was also reversal of hypermethylation of the RARβ2 gene after six days of treatment with 20 μM curcumin. However, allyl sulphide treatment (20 μM) did not cause the reversal of hypermethylation until 72 h of treatment in the SiHa cell line. This is the first report to show the reversal of hypermethylation of the RARβ2 gene by genistein and curcumin in cervical cancer cell lines. Furthermore, these compounds acted as doublepronged agents as they caused apoptosis in the treated cervical cancer cell lines in addition to reversal of promoter hypermethylation.
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Shrivastava A, Shah N, Bureau Y. P03-132 - Redefining outcome measures in schizophrenia: integrating social & clinical parameters. Eur Psychiatry 2010. [DOI: 10.1016/s0924-9338(10)71101-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Desai D, Desai VA, Verma RN, Shrivastava A. Role of gray scale and color Doppler in differentiating benign from malignant ovarian masses. J Midlife Health 2010; 1:23-5. [PMID: 21799634 PMCID: PMC3139258 DOI: 10.4103/0976-7800.66991] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Objectives: To evaluate prospectively the relative usefulness of color Doppler and gray scale sonography in differentiating benign from malignant ovarian masses and evaluation of scoring systems Sassone and Alcazar for differentiating benign from malignant ovarian masses. Methods: Study was conducted during the period of Jan 2006 to Oct 2007 in department of obstetrics and gynaecology, New civil Hospital, Surat. The study was conducted mainly with the help of department of radio-diagnosis. The study include 100 patient clinically suspected to have ovarian neoplasm and referred to department of radio-diagnosis where evaluation with Ultrasonography and Doppler was done. The efficacy of scoring systems were evaluated by histopathological examination of mass or fine needle aspiration cytology or presence of malignant cells in ascetic fluid. Results: Sassone's scoring system was able to identify 72 out of 78 benign masses and 18 out of 22 malignant masses.where as Alcazar system with use of colour Doppler was able to identify 75 out of 78 benign and 21 out of 22 malignant ovarian masses. Sensitivity and specificity of sassone is 81.8%,92.3% respectively, where as that of Alcazar is 95.5%, 96.2% respectively. Conclusion: Using both gray scale and colour Doppler in differentiating benign from malignant ovariam masses is giving results with more accuracy and Alcazar system is better performing than sassone's scoring systems.
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Lemasson A, Shrivastava A, Navin A, Rejmund M, Keeley N, Zelevinsky V, Bhattacharyya S, Chatterjee A, de France G, Jacquot B, Nanal V, Pillay RG, Raabe R, Schmitt C. Modern Rutherford experiment: tunneling of the most neutron-rich nucleus. PHYSICAL REVIEW LETTERS 2009; 103:232701. [PMID: 20366144 DOI: 10.1103/physrevlett.103.232701] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2009] [Indexed: 05/29/2023]
Abstract
A modern variation of the Rutherford experiment to probe the tunneling of exotic nuclear matter from the measurement of the residues formed in the bombardment of (197)Au by extremely neutron-rich (8)He nuclei is presented. Using a novel off-beam technique the most precise and accurate measurements of fusion and neutron transfer involving reaccelerated unstable beams are reported. The results show unusual behavior of the tunneling of (8)He compared to that for lighter helium isotopes, highlighting the role of the intrinsic structure of composite many-body quantum systems and pairing correlations.
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Shrivastava A, Navin A, Lemasson A, Ramachandran K, Nanal V, Rejmund M, Hagino K, Ichikawa T, Bhattacharyya S, Chatterjee A, Kailas S, Mahata K, Parkar VV, Pillay RG, Rout PC. Exploring fusion at extreme sub-barrier energies with weakly bound nuclei. PHYSICAL REVIEW LETTERS 2009; 103:232702. [PMID: 20366145 DOI: 10.1103/physrevlett.103.232702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Indexed: 05/29/2023]
Abstract
Results of measurement of residues formed in fusion of (6)Li with (198)Pt in the energy range of 0.68 < E/V(b) < 1.3 using a new sensitive off-beam technique are reported. The fusion excitation function and the derived average angular momenta do not indicate a change of slope at deep sub-barrier energies, contrary to recent observations. The present results for a system with weakly bound projectile confront the current understanding of the fusion hindrance at these low energies, underlying the role of internal reorganization on the dynamical path towards fusion.
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Kraft-Bermuth S, Andrianov VA, Bleile A, Echler A, Egelhof P, Kiseleva A, Kiselev O, Meier HJ, Meier JP, Shrivastava A, Weber M, Golser R, Kutschera W, Priller A, Steier P, Vockenhuber C. Calorimetric low temperature detectors for low-energetic heavy ions and their application in accelerator mass spectrometry. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2009; 80:103304. [PMID: 19895057 DOI: 10.1063/1.3213622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The energy-sensitive detection of heavy ions with calorimetric low temperature detectors was investigated in the energy range of E=0.1-1 MeV/amu, commonly used for accelerator mass spectrometry (AMS). The detectors used consist of sapphire absorbers and superconducting aluminum transition edge thermometers operated at T approximately 1.5 K. They were irradiated with various ion beams (13C, 197Au, 238U) provided by the VERA tandem accelerator in Vienna, Austria. The relative energy resolution obtained was DeltaE/E=(5-9) x 10(-3), even for the heaviest ions such as 238U. In addition, no evidence for a pulse height defect was observed. This performance allowed for the first time to apply a calorimetric low temperature detector in an AMS experiment. The aim was to precisely determine the isotope ratio of 236U/238U for several samples of natural uranium, 236U being known as a sensitive monitor for neutron fluxes. Replacing a conventionally used detection system at VERA by the calorimetric detector enabled to substantially reduce background from neighboring isotopes and to increase the detection efficiency. Due to the high sensitivity achieved, a value of 236U/238U=6.1 x 10(-12) could be obtained, representing the smallest 236U/238U ratio measured at the time. In addition, we contributed to establishing an improved material standard of 236U/238U, which can be used as a reference for future AMS measurements.
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Abstract
Recent advances in designing peptide ligands for therapeutic targets are making peptides an attractive alternative to small molecules and proteins. It is now common to see peptides developed with affinities comparable to antibodies and specificities much better than small molecules or antibodies. This is especially true in the case of tumor targeting cytotoxic drugs or targeted diagnostics where peptides can be used as a delivery vehicle for drugs or diagnostics. Moreover, lessons learned from nature in understanding peptide ligands are proving to be useful in designing better antibodies and small molecule therapeutics.
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Shrivastava A. Do we Need to Review Outcome Measures in Schizophrenia to Capture ‘Real-life’ Situation? Eur Psychiatry 2009. [DOI: 10.1016/s0924-9338(09)70581-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Introduction:Outcome measures in schizophrenia are defining aspects for deciding the status of recovery based upon which people’ scientific body forms opinions. It is also important in dealing with stigma related to schizophrenia. Recently the concept of ‘recovery’ and’ outcome’ has come under scientific scrutiny. Literature does not show a consistent pattern in outcome. Both short term and long-term outcome show variability, which is often, explained by cultural factors. It has been generally considered that devolved countries have poor outcome than developing, non-industrialized countries. This view has also been challenged recently. The paper draws from the conceptual aspects if our outcome measure are capturing ‘real-life’ situation. We conducted two studies in Mumbai, India:1.Study of stigma & discrimination, which brought out the facts of families’ expectation and disappointments with level of recovery.2.A 10 years long term study, to determine recovery status of recovered patients.80% patients and families felt that recovery is inadequate and short of social integration despite continued treatment in stigma study. In outcome study, 60% patients showed good recovery as per CGIS. These patients were reassessed on 13 outcome criteria's of Meltzer. It is observed tat half of the patients who recovered continue to live with symptoms, a quarter with varying suicidality and side effects, most of the patients were not socially integrated, majority have not returned to productivity, employment and education It is concluded that outcome criteria's need a thoughtful revision and a new perspective to capture ground reality.
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Gupta Y, Shrivastava A, Duggal D, Patel A, Agrawal S. A new RP-HPLC method for simultaneous estimation of nebivolol hydrochloride and hydrochlorthiazide in dosage forms. J Young Pharm 2009. [DOI: 10.4103/0975-1483.57078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Chittora NC, Shrivastava A, Jain A. New RP-HPLC method of miglitol in tablet dosage form including forced degradation studies and estimation in spiked rabbit plasma. J Young Pharm 2009. [DOI: 10.4103/0975-1483.59329] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Shrivastava A. A poster poser--doing it in tiles. West J Med 2008. [DOI: 10.1136/bmj.a2923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Singh K, Shrivastava A. Early Aggressive Intraocular Pressure Lowering, Target Intraocular Pressure, and a Novel Concept for Glaucoma Care. Surv Ophthalmol 2008; 53 Suppl1:S33-8. [DOI: 10.1016/j.survophthal.2008.08.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Chatterjee A, Navin A, Shrivastava A, Bhattacharyya S, Rejmund M, Keeley N, Nanal V, Nyberg J, Pillay RG, Ramachandran K, Stefan I, Bazin D, Beaumel D, Blumenfeld Y, de France G, Gupta D, Labiche M, Lemasson A, Lemmon R, Raabe R, Scarpaci JA, Simenel C, Timis C. 1n and 2n transfer with the Borromean nucleus 6He near the Coulomb barrier. PHYSICAL REVIEW LETTERS 2008; 101:032701. [PMID: 18764247 DOI: 10.1103/physrevlett.101.032701] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2008] [Indexed: 05/26/2023]
Abstract
Angular distributions for 1n and 2n transfer are reported for the 6He+65Cu system at E_{lab}=22.6 MeV. For the first time, triple coincidences between alpha particles, neutrons, and characteristic gamma rays from the targetlike residues were used to separate the contributions arising from 1n and 2n transfer. The differential cross sections for these channels, elastic scattering, and fusion were analyzed using a coupled reaction channels approach. The large measured ratio of the 2n-to-1n cross section and the strong influence of 2n transfer on other channels indicate that the dineutron configuration of 6He plays a dominant role in the reaction mechanism.
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Shrivastava A, Singh K. Prostaglandin Analogs in the Cataract Surgery Perioperative Period. J Curr Glaucoma Pract 2008. [DOI: 10.5005/jp-journals-10008-1030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Fullerton DG, Shrivastava A, Munavvar M, Jain S, Howells J, Macdowall P. Pulmonary tuberculosis presenting with central retinal vein occlusion. Br J Ophthalmol 2007; 91:1714-5. [PMID: 18024819 DOI: 10.1136/bjo.2007.114777] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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85
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Fallot M, Scarpaci JA, Frascaria N, Blumenfeld Y, Chbihi A, Chomaz P, Désesquelles P, Frankland J, Khan E, Laville JL, Plagnol E, Pollacco EC, Roussel-Chomaz P, Roynette JC, Shrivastava A, Zerguerras T. Evidence for a three-phonon giant resonance state in 40Ca nuclei. PHYSICAL REVIEW LETTERS 2006; 97:242502. [PMID: 17280273 DOI: 10.1103/physrevlett.97.242502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2006] [Revised: 10/27/2006] [Indexed: 05/13/2023]
Abstract
Inelastic scattering of 40Ca on 40Ca at 50 MeV/A has been measured in coincidence with protons at the GANIL facility. The SPEG spectrometer was associated with 240 CsI(Tl) scintillators of the INDRA 4pi array, allowing for the measurement of complete decay events. The missing energy method was applied to these events. For events with excitation energy between 42 and 55 MeV, a direct decay branch by three protons towards the low energy states of 37Cl gives the first evidence for a 3-phonon state built with giant resonances.
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86
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Tebruegge MO, Shrivastava A. Giant cerebral arteriovenous malformation. Arch Dis Child 2006; 91:895. [PMID: 17056863 PMCID: PMC2082963 DOI: 10.1136/adc.2006.103481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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87
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Khanna D, Shrivastava A. An unusual presentation of polyarticular tophaceous gout. Rheumatology (Oxford) 2006; 45:1095. [PMID: 16943372 DOI: 10.1093/rheumatology/kei141] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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88
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Ghosh KK, Sinha D, Satnami ML, Dubey DK, Shrivastava A, Palepu RM, Dafonte PR. Enhanced nucleophilic reactivity of hydroxamate ions in some novel micellar systems for the cleavage of Parathion. J Colloid Interface Sci 2006; 301:564-8. [PMID: 16797580 DOI: 10.1016/j.jcis.2006.05.061] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2006] [Revised: 05/19/2006] [Accepted: 05/23/2006] [Indexed: 11/28/2022]
Abstract
The reactivity of three alpha-nucleophiles, i.e. N-phenylbenzohydroxamate, benzohydroxamate and salicylhydroxamate ions towards cleavage of p-nitrophenyldiethyl phosphorothioate (Parathion) is considerably enhanced in the presence of cationic surfactant, i.e. cetyltrimethylammonium bromide. The esterolytic properties of N-phenylbenzohydroxamate ion for parathion have also been examined in two novel surfactants, viz. cetyltriphenylphosphonium bromide and cetyldimethyl ethanol ammonium bromide. The cetyldimethyl ethanol ammonium bromide is more reactive. The rate-surfactant profiles have been fitted with pseudophase model.
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Shrivastava A, Mukherjee KC, Gupta A, Chandna S. Fast track cardiac anaesthesia in a new setup. Indian J Thorac Cardiovasc Surg 2006. [DOI: 10.1007/s12055-006-0672-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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90
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Raniga S, Shah C, Shrivastava A, Amin P, Patel P. Doppler findings In castleman disease - A rare case. Indian J Radiol Imaging 2006. [DOI: 10.4103/0971-3026.29068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Abstract
Castleman′s disease is a rare, benign disease of unknown cause that induces reactive lymph node hyperplasia. It has two histologic subtypes: hyaline vascular and plasma cellular. A definitive diagnosis necessitates tissue biopsy. A specimen may be even misdiagnosed as lymphoma in frozen section. Surgery is the treatment of choice for the solitary form, whereas chemotherapy, radiotherapy, and steroids are proposed for the multicentric type. When this condition affects the neck, it usually presents as a solitary neck mass. Multiple neck masses are an uncommon presentation of Castleman disease affecting the neck. Most Castleman′s disease lesions appear as nonspecific, well-defined hypoechoic masses on sonography. Sonography remains useful for the evaluation of cervical and axillary Castleman′s diseases, in which the depiction of prominent peripheral vessels and penetrating feeding vessels on Doppler sonograms can suggest the diagnosis of this uncommon disease. Castleman′s disease of the neck on CT and MRI scan has been described as well-circumscribed homogeneous mass lesion with moderate to intense enhancement.
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Shrivastava A, von Wronski MA, Sato AK, Dransfield DT, Sexton D, Bogdan N, Pillai R, Nanjappan P, Song B, Marinelli E, DeOliveira D, Luneau C, Devlin M, Muruganandam A, Abujoub A, Connelly G, Wu QL, Conley G, Chang Q, Tweedle MF, Ladner RC, Swenson RE, Nunn AD. A distinct strategy to generate high-affinity peptide binders to receptor tyrosine kinases. Protein Eng Des Sel 2005; 18:417-24. [PMID: 16087652 DOI: 10.1093/protein/gzi049] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We describe a novel and general way of generating high affinity peptide (HAP) binders to receptor tyrosine kinases (RTKs), using a multi-step process comprising phage-display selection, identification of peptide pairs suitable for hetero-dimerization (non-competitive and synergistic) and chemical synthesis of heterodimers. Using this strategy, we generated HAPs with K(D)s below 1 nM for VEGF receptor-2 (VEGFR-2) and c-Met. VEGFR-2 HAPs bound significantly better (6- to 500-fold) than either of the individual peptides that were used for heterodimer synthesis. Most significantly, HAPs were much better (150- to 800-fold) competitors than monomers of the natural ligand (VEGF) in various competitive binding and functional assays. In addition, we also found the binding of HAPs to be less sensitive to serum than their component peptides. We believe that this method may be applied to any protein for generating high affinity peptide (HAP) binders.
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Shrivastava A, Yousaf N, Vaidhyanath R. Posterior reversible encephalopathy syndrome. Br J Hosp Med (Lond) 2005; 66:56-7. [PMID: 15686172 DOI: 10.12968/hmed.2005.66.1.17541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A57-year-old man presented to the medical admissions unit of the authors' hospital with headache and blurred vision. His blood pressure recorded at the time of admission was 234/124 mmHg. Fundoscopy revealed early papilloedema and laboratory examination revealed raised levels of serum creatinine and urinary proteins. The patient reported a similar episode of headache and blurred vision 6 weeks before admission.
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Menon M, Hemal AK, Tewari A, Shrivastava A, Bhandari A. The technique of apical dissection of the prostate and urethrovesical anastomosis in robotic radical prostatectomy. BJU Int 2004; 93:715-9. [PMID: 15049978 DOI: 10.1111/j.1464-410x.2003.04748.x] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To describe the technique of dissecting the apex of the prostate and a modified single running-suture urethrovesical anastomosis in patients undergoing robot-assisted radical prostatectomy for organ-confined prostate cancer. PATIENTS AND METHODS Over 550 robot-assisted radical prostatectomies have been undertaken using Vattikuti Institute Prostatectomy (VIP) technique in patients with localized carcinoma of the prostate. We present a critical analysis of the first 120 procedures by one surgeon (M.M.) at our institution using this newly developed technique of urethrovesical anastomosis preceded by dissecting the apex of the prostate. RESULTS The mean time for the urethrovesical anastomosis was 13 min. All but 24 patients had their catheter removed 4 days after surgery, as indicated by a cystogram. The catheter was removed successfully at 7 days in the remaining 24 patients who had a mild leak on cystography. Two patients had urinary retention within a week of removing the catheter and had to be re-catheterized. Continence was evaluated using standardized criteria before and after the procedure. The patients also replied to a mailed validated questionnaire survey; 96% were continent at 3 months and the remaining 4% used a thin pad for security. CONCLUSIONS We report a technique of dissecting the apex of the prostate and prostatovesical junction for dividing the bladder neck, and a modified single running-suture urethrovesical anastomosis, in patients undergoing robot-assisted radical prostatectomy for organ-confined cancer of the prostate. The same principles can also be applied for the anastomosis during pure laparoscopic procedures and for urethro-neovesical anastomosis in patients undergoing robotic radical cystoprostatectomy for carcinoma of the bladder.
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Turk MA, Spadaro JA, Scandale J, Logan LR, Shrivastava A, Weber RJ. Poster 82. Arch Phys Med Rehabil 2003. [DOI: 10.1016/s0003-9993(03)00624-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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96
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Menon M, Hemal AK, Tewari A, Shrivastava A, Shoma AM, El-Tabey NA, Shaaban A, Abol-Enein H, Ghoneim MA. Nerve-sparing robot-assisted radical cystoprostatectomy and urinary diversion. BJU Int 2003; 92:232-6. [PMID: 12887473 DOI: 10.1046/j.1464-410x.2003.04329.x] [Citation(s) in RCA: 391] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To develop a technique of nerve-sparing robot-assisted radical cystoprostatectomy (RRCP) for patients with bladder cancer. PATIENTS AND METHODS Robotic assistance should enhance the ability to preserve the neurovascular bundles during laparoscopic radical cystectomy. Thus we undertook RRCP and urinary diversion using a three-step technique. First, using a six-port approach and the da Vinci Surgical System (Intuitive Surgical, Sunnyvale, CA, USA), one surgeon carried out a complete pelvic lymphadenectomy and cystoprostatectomy using a technique developed specifically for robotic surgery. The neurovascular bundles were easily identified and dissected away, the specimen entrapped in a bag and removed through a 5-6 cm suprapubic incision. Second, a different surgical team exteriorized the bowel through this incision and created a neobladder extracorporeally. Third, the neobladder was internalized, the incision closed and the primary surgeon completed the urethro-neovesical anastomosis with robotic assistance. RESULTS RRCP was carried out in 14 men and three women by the primary surgeon (M.M.). The form of urinary reconstruction was ileal conduit in three, a W-pouch with a serosal-lined tunnel in 10, a double-chimney or a T-pouch with a serosal-lined tunnel in two each. The mean operative duration for robotic radical cystectomy, ileal conduit and orthotopic neobladder were 140, 120 and 168 min, respectively. The mean blood loss was < 150 mL. The number of lymph nodes removed was 4-27, with one patient having N1 disease. The margins of resection were free of tumour in all patients. CONCLUSIONS We developed a technique for nerve-sparing RRCP using the da Vinci system which allows precise and rapid removal of the bladder with minimal blood loss. The bowel segment can be exteriorized and the most complex form of orthotopic bladder can be created through the incision used to deliver the cystectomy specimen. Performing this part of the operation extracorporeally reduced the operative duration.
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Hayhoe MM, Shrivastava A, Mruczek R, Pelz JB. Visual memory and motor planning in a natural task. J Vis 2003; 3:49-63. [PMID: 12678625 DOI: 10.1167/3.1.6] [Citation(s) in RCA: 289] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2002] [Indexed: 11/24/2022] Open
Abstract
This paper investigates the temporal dependencies of natural vision by measuring eye and hand movements while subjects made a sandwich. The phenomenon of change blindness suggests these temporal dependencies might be limited. Our observations are largely consistent with this, suggesting that much natural vision can be accomplished with "just-in-time" representations. However, we also observe several aspects of performance that point to the need for some representation of the spatial structure of the scene that is built up over different fixations. Patterns of eye-hand coordination and fixation sequences suggest the need for planning and coordinating movements over a period of a few seconds. This planning must be in a coordinate frame that is independent of eye position, and thus requires a representation of the spatial structure in a scene that is built up over different fixations.
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Abstract
The highly task-specific fixation patterns revealed in performance of natural tasks demonstrate the fundamentally active nature of vision, and suggest that in many situations, top-down processes may be a major factor in the acquisition of visual information. Understanding how a top-down visual system could function requires understanding the mechanisms that control the initiation of the different task-specific computations at the appropriate time. This is particularly difficult in dynamic environments, like driving, where many aspects of the visual input may be unpredictable. We therefore examined drivers' abilities to detect Stop signs in a virtual environment when the signs were visible for restricted periods of time. Detection performance is heavily modulated both by the instructions and the local visual context. This suggests that visibility of the signs requires active search, and that the frequency of this search is influenced by learnt knowledge of the probabilistic structure of the environment.
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100
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Shrivastava A, Dwivedi S, Aggarwal A, Misra R. Anti-cardiolipin and anti-beta2 glycoprotein I antibodies in Indian patients with systemic lupus erythematosus: association with the presence of seizures. Lupus 2001; 10:45-50. [PMID: 11243509 DOI: 10.1191/096120301671577528] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The aim of this study was to examine whether the clinical features of antiphospholipid antibody syndrome are associated with anti-cardiolipin and anti-beta2 glycoprotein I antibodies in Indian patients with SLE. Seventy-six patients (71 females), who fulfilled 1982 ACR criteria for SLE, were prospectively studied for the clinical features of antiphospholipid antibody syndrome (APS), and their sera were analysed for the presence of IgG/IgM/IgA anti-cardiolipin antibodies (aCL) by an in-house ELISA and, in 65 of them, for the presence of IgG anti-beta2 glycoprotein I antibodies (anti-beta2 GPI) by a commercial kit. Thirty-nine (51%) patients were positive for aCL, all of which were positive for IgG aCL, either alone (79.6%) or along with IgM and/or IgA. Twenty-seven (69.3%) out of 39 aCL-positive and seven (26.9%) out of 26 aCL-negative sera were positive for IgG antibodies to beta2 GPI. There was a significant correlation (r = 0.66, P < 0.05) between the levels of aCL and anti-beta2 GPI antibodies. Forty-one patients had features of definite or suggestive APS. Thrombocytopenia, recurrent pregnancy loss and CNS manifestations (seizures eight, infarct one) were seen in 20, 13 and nine patients, respectively. Thrombosis of the peripheral vessels was seen in only one patient. Only the presence of seizures was significantly associated with the presence of aCL and anti-beta2 GPI antibodies (P < 0.05). The characteristic association of definite APS (recurrent pregnancy loss and arterial/venous thrombosis) was lacking.
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