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Ciji A, Sahu NP, Pal AK, Dasgupta S, Akhtar MS. Alterations in serum electrolytes, antioxidative enzymes and haematological parameters of Labeo rohita on short-term exposure to sublethal dose of nitrite. FISH PHYSIOLOGY AND BIOCHEMISTRY 2012; 38:1355-1365. [PMID: 22388937 DOI: 10.1007/s10695-012-9623-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Accepted: 02/14/2012] [Indexed: 05/31/2023]
Abstract
An experiment was conducted to study the effects of short-term exposure to sublethal levels of nitrite on electrolyte regulation, antioxidative enzymes and haematological parameters in Labeo rohita juveniles. The fishes were exposed to graded levels of nitrite (0-15 mg l(-1)) for different duration (0, 12, 24, 48 and 96 h). The 96-h LC(50) value for L. rohita (avg. wt, 66.5 ± 0.5 g) was found to be 11.28 mg l(-1). Activities of antioxidative enzymes (catalase and superoxide dismutase), acetylcholine esterase (AChE) and methaemoglobin reductase, serum electrolytes (sodium, potassium and chloride), haematological parameters and blood glucose level significantly varied (P < 0.05) in a dose-dependent manner. With increasing nitrite concentration and exposure period, a progressive reduction in the total erythrocyte count and haemoglobin were observed. With increase in nitrite concentration, a significant (P < 0.05) increase in activities was evidenced in catalase and superoxide dismutase in liver as well as gill, methaemoglobin reductase in blood, while progressive decline in AChE activity in brain was recorded. The serum sodium and chloride content showed a progressive decline, while potassium showed an increasing trend upon increase in nitrite concentration. The serum K(+) and Cl(-) after 96-h exposure demonstrated a linear relationship (Y = 0.221x + 2.542, R (2) = 0.938, P < 0.01 and Y = -5.760x + 129.5, R (2) = 0.952, P < 0.01, respectively) with nitrite concentrations. This study revealed that nitrite exposure causes alteration in all measured tissue enzymes, serum electrolytes and haematological parameters.
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Basak J, Chakraborty A, Dasgupta S, Bhattacharya(majumder) D, Mukhopadhyay S, Mukhopadhyay A. Control of Cancer in West Bengal, India by Screening and Awareness Program. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)34003-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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78
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Dasgupta S, Ray U, Mukhopadhyay A, Basak J, Mukhopadhyay S. BCR ABL Fusion Protein Detection by a Modern Approach: Fluroscent Immuno Bead Assay. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)33650-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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79
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Gangopadhyay S, Mukhopadhyay S, Dasgupta S, Roy U, Mukhopadhyay A. Targeting Breast Cancer Stem Cells for Treatment Failure Cases of Late Stage Breast Cancer. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32939-2] [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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80
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Bhattacharyya D, Roy U, Dasgupta S, Basak J, Mukhopadhyay S, Chakraborty A, Mukhopadhyay A. Study of Acute Leukemia Pattern by Flow Cytometric Analysis: An Experience from Eastern India. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)33663-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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81
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Tyler SC, Dasgupta S, Battelli L, Agosta S, Grossman ED. Spatial cueing and task difficulty effects on the temporal attention selective temporal parietal junction. J Vis 2012. [DOI: 10.1167/12.9.139] [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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82
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Repessé Y, Dimitrov JD, Peyron I, Farrokhi Moshai E, Kiger L, Dasgupta S, Delignat S, Marden MC, Kaveri SV, Lacroix-Desmazes S. Heme binds to factor VIII and inhibits its interaction with activated factor IX. J Thromb Haemost 2012; 10:1062-71. [PMID: 22471307 DOI: 10.1111/j.1538-7836.2012.04724.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Heme is a redox active macrocyclic compound that is released upon tissue damage or hemorrhages. The extracellular release of large amounts of heme saturates scavenging heme-binding proteins. Free heme has been proposed to affect coagulation and has been co-purified with the factor VIII (FVIII)-von Willebrand factor (VWF) complex. The sites from which heme is released upon injury overlap with the sites to which FVIII is targeted for performing its hemostatic functions. OBJECTIVES To investigate the interaction of heme with FVIII and the consequence for the procoagulant activity of FVIII in vitro. METHODS AND RESULTS Heme bound to several sites on FVIII with high apparent affinity. Heme-binding inhibited FVIII procoagulant activity in a dose-dependent manner. FVIII inactivation in the presence of saturating amounts of heme implicated a reduced interaction of FVIII with activated FIX, as shown by ELISA, surface plasmon resonance and fluorescence quenching. Heme-mediated inactivation of FVIII was prevented by VWF, but not by human serum albumin, a heme-binding protein known for its protective activity in hemolytic conditions. CONCLUSIONS Our data identify FVIII as a novel heme-binding protein. Occupation of high affinity heme-binding sites on FVIII at low concentrations of free heme did not inactivate FVIII. Conversely, large molar excesses of heme over FVIII, which correspond to conditions of extensive heme release, inhibited FVIII activity in vitro. It remains to be demonstrated whether, under such conditions, heme-mediated modulation of the activity of FVIII plays some role in the regulation of coagulation.
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Koner S, Basak J, Chakraborty A, Majumder DB, Dasgupta S, Das P, Pal N, Sen S, Mukhopadhyay S, Mukhopadhyay A. 125P Community Therapy by Early Breast Cancer Detection and its Prevention by Lifestyle Modification. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(19)65764-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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84
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Gangopadhyay S, Mukhopadhyay S, Dasgupta S, Hor P, Roy U, Sengupta S, Basak J, Mukhopadhyay A. 52P Breast Cancer Stem Cells: A Novel Therapy for Breast Cancer. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(19)65697-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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85
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Dasgupta S, Mukhopadhyay S, Basak J, Chakraborty A, Majumder DB, Gangopadhyay S, Mukhopadhyay A. 131P Association of Hla Class I and Class Ii Alleles with Breast Cancer in Eastern Indian Population. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(19)65770-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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86
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Roy B, Dasgupta S, Manivel V, Parameswaran P, Giri B. Surface topographical and ultrastructural alterations of Raillietina echinobothrida and Ascaridia galli induced by a compound isolated from Acacia oxyphylla. Vet Parasitol 2012; 185:322-6. [DOI: 10.1016/j.vetpar.2011.09.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2010] [Revised: 09/22/2011] [Accepted: 09/30/2011] [Indexed: 10/17/2022]
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Shaw JE, Chio J, Dasgupta S, Lai AY, Mo GCH, Pang F, Thomason LAM, Yang AJ, Yip CM, Nitz M, McLaurin J. Aβ(1-42) assembly in the presence of scyllo-inositol derivatives: identification of an oxime linkage as important for the development of assembly inhibitors. ACS Chem Neurosci 2012; 3:167-77. [PMID: 22860186 DOI: 10.1021/cn2000926] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Accepted: 12/23/2011] [Indexed: 11/29/2022] Open
Abstract
To identify a lead skeleton structure for optimization of scyllo-inositol-based inhibitors of amyloid-beta peptide (Aβ) aggregation, we have synthesized aldoxime, hydroxamate, carbamate, and amide linked scyllo-inositol derivatives. These structures represent backbones that can be readily expanded into a wide array of derivatives. They also provide conservative modifications of the scyllo-inositol backbone, as they maintain the display of the equatorial polar atoms, preserving the stereochemical requirement necessary for maximum inhibition of Aβ(1-42) fiber formation. In addition, a reliable work plan for screening derivatives was developed in order to preferentially identify a backbone(s) structure that prevents fibrillogenesis and stabilizes nontoxic small molecular weight oligomers, as we have previously reported for scyllo-inositol. In the present studies, we have adapted a high throughput ELISA-based oligomerization assay followed by atomic force microscopy to validate the results screen compounds. The lead compounds were then tested for toxicity and ability to rescue Aβ(1-42) induced toxicity in vitro and the affinity of the compounds for Aβ(1-42) compared by mass spectrometry. The data to suggest that compounds must maintain a planar conformation to exhibit activity similar to scyllo-inositol and that the oxime derivative represents the lead backbone for future development.
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Biswas M, Chatterjee A, Ghosh SK, Dasgupta S, Ghosh K, Ganguly PK. Prevalence, types, clinical associations, and determinants of peripheral neuropathy in rheumatoid patients. Ann Indian Acad Neurol 2011; 14:194-7. [PMID: 22028533 PMCID: PMC3200043 DOI: 10.4103/0972-2327.85893] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2010] [Revised: 02/19/2011] [Accepted: 03/09/2011] [Indexed: 11/15/2022] Open
Abstract
Background: Rheumatoid arthritis is a multi-system autoimmune disorder predominantly involving multiple small and large joints along with certain extra-articular manifestations. The presence of peripheral neuropathy in patients with rheumatoid arthritis contributes significantly to the functional limitation in patients with rheumatoid arthritis. Objectives: To study the prevalence, types, and determinants of peripheral neuropathy in patients with rheumatoid arthritis. Materials and Methods: We studied 74 patients with rheumatoid arthritis of at least 2 year duration for the presence of peripheral neuropathy both clinically and electrophysiologically. The data obtained were entered into a database and continuous variables were analyzed using the Student t test and categorical variables were analyzed using the chi-square test. Results: Peripheral neuropathy was detected in 39.19% (29 out of 74 patients) patients on electrophysiologic testing and 82.76% (24 out of 29 patients) of the patients were asymptomatic. There was significant association between the presence of peripheral neuropathy and disease duration and rheumatoid factor positivity by the latex agglutination method. Sensory neuropathy was the most common form detected. Conclusions: Our study shows that subclinical peripheral neuropathy particularly sensory neuropathy which is not related to disease severity is very common in patients with prolonged disease duration.
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Keidar M, Walk R, Shashurin A, Srinivasan P, Sandler A, Dasgupta S, Ravi R, Guerrero-Preston R, Trink B. Cold plasma selectivity and the possibility of a paradigm shift in cancer therapy. Br J Cancer 2011; 105:1295-301. [PMID: 21979421 PMCID: PMC3241555 DOI: 10.1038/bjc.2011.386] [Citation(s) in RCA: 338] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background: Plasma is an ionised gas that is typically generated in high-temperature laboratory conditions. However, recent progress in atmospheric plasmas has led to the creation of cold plasmas with ion temperature close to room temperature. Methods: Both in-vitro and in-vivo studies revealed that cold plasmas selectively kill cancer cells. Results: We show that: (a) cold plasma application selectively eradicates cancer cells in vitro without damaging normal cells; and (b) significantly reduces tumour size in vivo. It is shown that reactive oxygen species metabolism and oxidative stress responsive genes are deregulated. Conclusion: The development of cold plasma tumour ablation has the potential of shifting the current paradigm of cancer treatment and enabling the transformation of cancer treatment technologies by utilisation of another state of matter.
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Dasgupta S, Tyler SC, Grossman ED. Co-localization of human posterior STS during biological motion, face and social perception. J Vis 2011. [DOI: 10.1167/11.11.629] [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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91
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Tyler SC, Dasgupta S, Battelli L, Grossman ED. Lateralized Temporal Parietal Junction (TPJ) activity during temporal order judgment tasks. J Vis 2011. [DOI: 10.1167/11.11.264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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92
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Mukhopadhyay A, Dasgupta S, Mukhopadhyay S, Bose CK, Sarkar S, Gharami F, Koner S, Basak J, Roy UK. Imatinib mesylate therapy in patients of chronic myeloid leukemia with Philadelphia chromosome positive: an experience from eastern India. Indian J Hematol Blood Transfus 2011; 28:82-8. [PMID: 23730014 DOI: 10.1007/s12288-011-0108-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Accepted: 08/25/2011] [Indexed: 12/24/2022] Open
Abstract
Imatinib inhibits constitutively active BCR-ABL tyrosine kinase of chronic myeloid leukemia (CML). In a long term study it was found superior to interferon alfa plus cytarabine for newly diagnosed CML in the chronic phase. However, till date there is no major study to evaluate eastern Indian CML patients treated with imatinib mesylate. The aim of our study was to see the efficacy, tolerability, toxicity and safety of imatinib in eastern Indian subset of CML population. The present study enrolled 831 patients with CML out of which 197 were excluded due to various reasons of noncompliance, death and not being fit to receive the drug. The rest, 634 (76% of total enrolled) were selected for the evaluation. In the beginning of the study, 603 patients were in chronic phase, 27 in accelerated phase and 4 patients in blast crisis phase. Among 634 patients, 280 patients (44%) received previously either interferon alpha or hydroxyurea and other 354 patients (56%) were previously untreated. Complete hematological remission and major cytogenetic response were 91 and 67%, respectively after 1 year of treatment. Complete molecular remission was 35% after 1 year of treatment. Sixty-four patients (10.1%) were resistant to imatinib mesylate in 5 years. The disease free and overall survival at 60 months were 72.2 and 76.1% respectively. After 60 months of follow up, continuous treatment of chronic phase CML with imatinib as initial therapy was found to be safe and able to induce durable responses in a high proportion of patients.
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Wagstaff J, Hawkins RE, Nathan PD, Sarda SP, Vekeman F, Korves C, Dasgupta S, O'Mara S, Fitton S, Hayers J, Tham C, Luka A, Wei R, Mykletun A, Neary M, Duh MS. Sunitinib (SU) treatment (trx) patterns and toxicity in patients (pts) with advanced renal cell carcinoma (RCC) in United Kingdom (UK). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e15150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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94
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Mallik S, Mandal PK, Chatterjee C, Ghosh P, Manna N, Chakrabarty D, Bagchi SN, Dasgupta S. Assessing cold chain status in a metro city of India: an intervention study. Afr Health Sci 2011; 11:128-133. [PMID: 21572868 PMCID: PMC3092313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
BACKGROUND Cold chain maintenance is an essential activity to maintain the potency of vaccines and to prevent adverse events following immunization. One baseline study highlighted the unsatisfactory cold chain status in city of Kolkata in India. OBJECTIVES To assess the changes which occurred in the cold chain status after the intervention undertaken to improve the status and also to assess the awareness of the cold chain handlers regarding cold chain maintenance. METHODS Intervention consisted of reorganization of cold chain points and training of health manpower in Kolkata Municipal area regarding immunization and cold chain following the guidelines as laid by Govt of India. Reevaluation of cold chain status was done at 20 institutions selected by stratified systematic random sampling after the intervention. The results were compared with baseline survey. RESULTS Significant improvement had been observed in correct placing of cold chain equipment, maintenance of stock security, orderly placing of ice packs, diluents and vaccines inside the equipment, temperature recording and maintenance. But awareness and skill of cold chain handlers regarding basics of cold chain maintenance was not satisfactory. CONCLUSIONS The success of intervention included significant improvement of cold chain status including creation of a designated cold chain handler. The gaps lay in non-availability of non-electrical cold chain equipment and separate cold chain room, policy makers should stress. Cold chain handlers need reorientation training regarding heat & cold sensitive vaccines, preventive maintenance and correct contingency plan.
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Roy S, Basu S, Dasgupta S, Singh AK, Viswanathan R. Carbapenem resistance in Acinetobacter baumannii isolated from blood of neonates with sepsis. Indian J Med Microbiol 2011; 28:416-7. [PMID: 20966591 DOI: 10.4103/0255-0857.71814] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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96
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Anderson B, Cao M, Dasgupta S, Morse A, Yu C. Maintaining a directed, triangular formation of mobile autonomous agents. COMMUNICATIONS IN INFORMATION AND SYSTEMS 2011. [DOI: 10.4310/cis.2011.v11.n1.a1] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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97
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Dasgupta S, Ng V. Which Clustering Do You Want? Inducing Your Ideal Clustering with Minimal Feedback. J ARTIF INTELL RES 2010. [DOI: 10.1613/jair.3003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
While traditional research on text clustering has largely focused on grouping documents by topic, it is conceivable that a user may want to cluster documents along other dimensions, such as the author's mood, gender, age, or sentiment. Without knowing the user's intention, a clustering algorithm will only group documents along the most prominent dimension, which may not be the one the user desires. To address the problem of clustering documents along the user-desired dimension, previous work has focused on learning a similarity metric from data manually annotated with the user's intention or having a human construct a feature space in an interactive manner during the clustering process. With the goal of reducing reliance on human knowledge for fine-tuning the similarity function or selecting the relevant features required by these approaches, we propose a novel active clustering algorithm, which allows a user to easily select the dimension along which she wants to cluster the documents by inspecting only a small number of words. We demonstrate the viability of our algorithm on a variety of commonly-used sentiment datasets.
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Nath RK, Dasgupta S, Ghosh S, Mitra A, Panda AK. Spectral Studies on the Binding Behavior of Cationic Dyes and Surfactants with Bacterial Polysaccharide ofKlebsiellaK43. J DISPER SCI TECHNOL 2010. [DOI: 10.1080/01932690903269586] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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99
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Dasgupta S, Pyles J, Grossman E. Multi-voxel pattern analysis (MVPA) of the STS during biological motion perception. J Vis 2010. [DOI: 10.1167/10.7.789] [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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100
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Dasgupta S, Ghosh S, Sengupta SG, Sarkar R. Tubo-ovarian Actinomycosis: a case report with brief review of literature. ACTA ACUST UNITED AC 2010. [PMID: 22918075 DOI: 10.4103/0019-5359.99872] [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]
Abstract
Pelvic actinomycosis is an uncommon condition, often associated with the use of intrauterine contraceptive device (IUCD). Pelvic actinomycosis is rare accounting for 3% of all human actinomycotic infections. Ovarian actinomycosis is even rarer. Here, we present a 24-year-old woman using an IUCD for 3 1 / 2 years with right-sided adnexal mass, which was diagnosed postoperatively as tubo-ovarian actinomycosis. Many times, an appropriate management is overlooked or delayed due to its non-specific and variable clinical and radiological features. Sometimes, it can even mimic an advanced pelvic malignancy. Therefore, the gynecologist should consider the possibility of this infection to spare the patient from morbidity of radical surgical procedure.
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