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Mishra KP, Padwad YS, Dutta A, Ganju L, Sairam M, Banerjee PK, Sawhney RC. Aqueous extract of Rhodiola imbricata rhizome inhibits proliferation of an erythroleukemic cell line K-562 by inducing apoptosis and cell cycle arrest at G2/M phase. Immunobiology 2007; 213:125-31. [PMID: 18241696 DOI: 10.1016/j.imbio.2007.07.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2006] [Revised: 07/05/2007] [Accepted: 07/23/2007] [Indexed: 11/18/2022]
Abstract
Rhodiola imbricata is a medicinal plant having immunostimulating properties. The anti-proliferative effects of Rhodiola aqueous extract (RAE), were studied in human erythroleukemic cell line K-562 using MTT cell proliferation assay. The proliferation of K-562 was significantly decreased after 72h incubation with RAE at 100 and 200microg/ml. However, almost no suppressive effects could be detected in normal human peripheral blood lymphocytes or mouse macrophage cell line RAW-264.7. RAE was also found to induce intracellular reactive oxygen species (ROS) in K-562 cells at 200microg/ml when incubated overnight. The increased ROS generation may cause apoptosis, which was observed in AnnexinV-FITC and propidium iodide (PI) staining of cells treated with RAE for 72h in K-562 cells. Moreover, RAE arrested cell cycle progression in G2/M phase in early and late period of exposure. The anti-cancer activity of RAE was also confirmed by increased NK cell cytotoxicity. These observations suggest that aqueous extract of R. imbricata rhizome has very potent anti-cancer activities, which might be useful in leukemia cancer treatment.
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Saraswathi K, Dutta A. Study of human immunodeficiency virus and HCV infections in intravenous drug users in Mumbai. Indian J Med Microbiol 2007; 25:174-5. [PMID: 17582199 DOI: 10.4103/0255-0857.32735] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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128
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Lu Z, Nickoloff E, So J, Dutta A. SU-FF-I-09: Pediatric Patient Dose Management From a 64 Slice VCT. Med Phys 2007. [DOI: 10.1118/1.2760385] [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] Open
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129
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So J, Nickoloff E, Lu Z, Dutta A. SU-FF-I-06: A Motion Phantom System For Image Quality Assessment of a 64-Slice Volume CT Scanner. Med Phys 2007. [DOI: 10.1118/1.2760382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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130
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Saraswathi K, Dutta A. Study of Human Immunodeficiency Virus and HCV Infections in Intravenous Drug Users in Mumbai. Indian J Med Microbiol 2007. [DOI: 10.1016/s0255-0857(21)02187-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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131
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Kanjilal SD, Dutta A, Mondal RK, Chakravorti S. Uncomplicated falciparum malaria complicated by salmonella septicaemia: cause not coincidence. JOURNAL OF THE INDIAN MEDICAL ASSOCIATION 2006; 104:646, 648. [PMID: 17444068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
A male patient of 10-year-old presented with fever, headache and vomiting for last few days. He was being treated with antimalarial drugs. On 14th day of illness he again showed rise of temperature. His blood culture showed growth of Salmonella typhi. He was treated with ceftriaxone and responded favourably. Here uncomplicated falciparum malaria developed a secondary infection with salmonella during hospital stay. This uncommon association was noted rather than a mere coincidence, which rarely reported in literature.
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Kiran U, Dutta A, Mehra A, Das SN, Zuber K. Neonatal lupus erythematosus with complete congenital heart block and severe respiratory distress: anesthetic management for urgent pacemaker implantation. Acta Anaesthesiol Scand 2006; 50:1315-6. [PMID: 17067343 DOI: 10.1111/j.1399-6576.2006.01158.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Roy T, Biswas A, Chakraborty D, Dutt A, Dutta A. P36.15 Electroencephalographic changes in patients with dementia – experience from a cognitive and behavioural neurology clinic. Clin Neurophysiol 2006. [DOI: 10.1016/j.clinph.2006.06.625] [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]
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135
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Dutta A, Ghosh A. Dynamics of lithium ions in bismuthate glasses: Influence of strontium ions. J Chem Phys 2006; 125:054508. [PMID: 16942227 DOI: 10.1063/1.2222371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The influence of strontium ions on the relaxation dynamics of lithium ions in bismuthate glasses has been investigated in the frequency range of 10 Hz to 2 MHz. We have observed that the conductivity increases and the activation energy decreases with the increase of SrO content in the glass compositions with fixed Li2O content. We have also observed that the conductivity increases and the activation energy decreases when Sr2+ ions are replaced by Li+ ions, keeping the glass former content fixed. We have shown that the estimated mobile ion concentration is almost independent of temperature and SrO content in the compositions. We have further shown that a fraction of total lithium ions are mobile for all glass compositions. The results have been interpreted on the basis of the modification of the bismuthate network by the addition of SrO, which enhances the mobility of Li ions, without altering the mobile Li+ ion concentration. We have also shown that the conductivity relaxation in these glasses is independent of temperature and composition, and the nonexponential parameter is less than that for the lithium bismuthate glasses without SrO.
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Bandyopadhyay SK, Chakrabarti N, Ghosal J, Dutta A. Bilateral parotid swelling in a young female. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 2006; 54:630. [PMID: 16941795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
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137
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Dutta A, Awasthi SK, Kaul A. A bullet in the maxillary sinus. Indian J Otolaryngol Head Neck Surg 2006; 58:307-9. [PMID: 23120327 PMCID: PMC3450414 DOI: 10.1007/bf03050854] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
Maxillary Sinus is an unusual site for lodgment of foreign bodies. We present a rare case of impacted bullel in the right maxillary sinus which entered through the orbital floor which could be removed after using a nasal endoscope through a Caldwell luc approach.
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Maiti SK, Tiwary R, Vasan P, Dutta A. Xylazine, diazepam and midazolam premedicated ketamine anaesthesia in white Leghorn cockerels for typhlectomy. J S Afr Vet Assoc 2006; 77:12-8. [PMID: 16700470 DOI: 10.4102/jsava.v77i1.333] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Thee different combinations of ketamine hydrochloride were used to induce general anaesthesia for surgical operations (typhlectomy) in 30 adult, single-comb White Leghorn cockerels. They were randomly divided into three groups, each comprising 10 birds. Birds in Group I received xylazine-ketamine combinations at the dose rate of 2 mg xylazine and 10 mg ketamine per kg i.v., whereas birds of Group II received diazepam (2.5 mg/kg i.v.) and 5 min later ketamine (75 mg/kg i.m.). In the Group III, midazolam (2 mg/kg i.m.) and 5 min later ketamine (50 mg/kg i.v.) was administered. The onset of sedation/anaesthesia was shortest (1.60 +/- 0.27 min) in Group I, followed by Group II (8.40 +/- 0.83 min) and Group III (17.10 +/- 1.71 min). Recovery period was shortest in the Group I (65-75 min) followed by Group II (80-85 min) and Group III (92-105 min). Sedation, muscle relaxation and surgical anaesthesia was optimal and excellent in Group I compared with the other two groups. Torticollis, salivation and dyspnoea were observed in Group III. Short-term limb contractions were present in all birds in Groups II and III, up to 20 min of observation. Recovery from anaesthesia was smooth in all three groups. A Surgical procedure (typhlectomy) was performed on all birds. Hypothermia was observed in Group II, whereas heart and respiratory depression was recorded in Group I. Blood sugar level did not vary significantly in any anaesthetic regime. The reduction of haemoglobin was maximum in Group II compared with Groups I and III. Hypoxaemia and hypercapnaea were elevated in all birds in Groups II and III. Blood electrolytes did not vary significantly from the baseline values among the three groups of birds during the period of observation (120 min). The xylazineketamine combination was found to be the best anaesthesia for surgical intervention in chickens.
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Lu Z, Nickoloff E, Dutta A, So J. TU-EE-A4-03: Quality Control Testing of Diagnostic Ultrasound Systems: Experience in Testing 72 Systems in 11 Years. Med Phys 2006. [DOI: 10.1118/1.2241607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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140
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Bandyopadhyay SK, Bandyopadhyay R, Dutta A. Isolated massive thyroid metastasis in lung cancer. Singapore Med J 2006; 47:324-6. [PMID: 16572246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Metastasis to the thyroid gland is rare despite its rich vascular supply. Among the pulmonary malignancies metastasising to the thyroid, adenocarcinomas are the commonest. The appearance of metastatic disease in lung carcinoma indicates a poor prognosis and the average survival is two months. We report a 62-year-old woman with squamous cell carcinoma of lung metastatic to the thyroid that produced massive enlargement of the gland. The appearance of the secondary preceded the diagnosis of the primary malignancy by a few months. Ultimately, the patient succumbed to her disease.
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Sarin S, Patra S, Namita, Pande C, Dutta A, Trivedi S. P.452 Decline in the prevalence of hepatitis B virus infection amongst healthy pregnant women in India — the changed scenario. J Clin Virol 2006. [DOI: 10.1016/s1386-6532(06)80625-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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142
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Dutta A, Triolo R. Stability analysis of Functional Electrical Stimulation (FES)-assisted overground gait in an incomplete spinal cord injured subject. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)83353-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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143
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Puri GD, Dutta A, Chinnan NK, Thingnam SKS, Sharma SK, Chari P. Arterial oxygenation changes in valvular heart disease patients with cardiomegaly in different recumbent positions. Eur J Anaesthesiol 2005; 22:834-8. [PMID: 16225717 DOI: 10.1017/s0265021505001407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND AND OBJECTIVE We studied the effect of different recumbent positions (supine, left and right lateral decubitus), on arterial oxygenation in 42 valvular heart disease patients planned for cardiac surgery. All patients had cardiomegaly (cardiothoracic ratio > or = 0.5) in their chest X-rays. Their left ventricular end-diastolic diameter was also noted from the preoperative echocardiogram. METHODS Arterial blood gas analysis was performed in supine, left and right lateral positions after keeping the patient in a given position for 15 min. During this period all patients received 35% oxygen supplementation. RESULTS Arterial oxygen tension and haemoglobin saturation were significantly higher in the right lateral position (PaO2 = 120.6 +/- 29.5 mmHg, SaO2 = 98.1 +/- 1.4%) than in supine (PaO2 = 111.0 +/- 30.6 mmHg, SaO2 = 97.6 +/- 2.2%) and left lateral positions (PaO2 = 109.7 +/- 32.0 mmHg, SaO2 = 97.6 +/- 1.7%; mean +/- SD; P 0.05). The change in PaO2 and SaO2 with change of posture from left to right was significantly related to left ventricular end-diastolic diameter (r = 0.50 and r = 0.63, respectively; Pearson correlation). Repeated measures of analysis of variance with left ventricular end-diastolic diameter as a covariate showed a significant change in arterial PaO2 with posture (P = 0.011). CONCLUSION Right lateral posture improves arterial oxygenation in the valvular heart disease patient with an enlarged left ventricle. In the preoperative period, these patients may benefit from a right lateral posture when lying in bed.
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Bandyopadhyay SK, Dutta S, Dutta A. Panniculitis-like T-cell lymphoma with fatal termination. JOURNAL OF THE INDIAN MEDICAL ASSOCIATION 2005; 103:551-2. [PMID: 16498764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A 58-year-old male presented with three weeks history of multiple subcutaneous nodules and fever. Histopathological feature of the nodule was characteristic of panniculitis. Three months later, the patient presented with carvical lymphadenopathy and compressive thoracic myelopathy and a diagnosis of diffuse mixed- cell lymphoma was established. Immunohistochemical study of subcutaneous lesions confirmed their T-cell origin. Chemotherapy was started but patient succumbed to his disease.
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Dutta A, Chakraborty A, Saha A, Ray S, Chatterjee A. Interaction of radiation- and bleomycin-induced lesions and influence of glutathione level on the interaction. Mutagenesis 2005; 20:329-35. [PMID: 16014360 DOI: 10.1093/mutage/gei046] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Radiation-induced exchange aberrations are thought to arise as a consequence of misrejoining of free ends of DNA double strand breaks (dsbs). In quiescent mammalian cells this process of misrejoining is prevalently taken up by the non-homologous end joining (NHEJ) process. In order to investigate the role of glutathione (GSH) in DNA dsb rejoining, the interaction of the lesions induced by bleomycin (Blem) and by radiation was studied since the lesions caused by both have similar and apparent rapid rates of repair. Endogenous GSH was depleted by buthionine sulfoximine (BSO) and chromosome aberrations (CAs) of human lymphocytes were scored from first cycle metaphases. Gamma radiation was administered 2 h after Blem treatment in combined studies. In the case of BSO, the treatment was given 3 h before Blem treatment. The BSO-treated samples showed higher sensitivity to radiation than BSO-untreated ones. Combined treatment of Blem and radiation induced higher frequency of CAs, in particular the exchange aberrations and interstitial deletions. However, such increased frequency of exchange aberrations was reduced drastically and the frequency of terminal deletions was increased significantly when combined treatment was given to BSO-pretreated cells. The consistent level of Ku70 protein in all the treated samples, with undetectable level of Rad51 in the G0-lymphocytes indicates the involvement of NHEJ pathway in misrejoining of DNA dsbs. It may be hypothesized that reduction in the frequency of exchange aberrations as induced by Blem + radiation combined treatment in BSO-treated samples could be because of reduced NHEJ pathway.
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Abstract
Ion transport in Li(2)O-CaO-Bi(2)O(3) glasses has been studied in the frequency range from 10 Hz to 2 MHz and in the temperature range from 293 to 543 K. The variation of the dc conductivity and the activation energy of these glasses with composition have been compared with those of binary lithium bismuthate glasses. It has been observed that the introduction of CaO in small amount does not effect the dc conductivity and the corresponding activation energy, but the larger amount of CaO changes them to some extent. The frequency-dependent conductivity has been studied using both conductivity and modulus formalisms. The values of the nonexponential parameter and frequency exponent are found to differ for the Li(2)O-CaO-Bi(2)O(3) glasses from those for the binary Li(2)O-Bi(2)O(3) glasses. The concentration of mobile Li(+) ions does not change appreciably with the change in the Li(2)O as well as CaO content in the compositions. The increasing amount of CaO in the glass compositions for fixed Li(2)O content points out that CaO dilates the glass network, enhancing the migration of Li(+) ions.
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Nickoloff E, Lu Z, Dutta A, So J, Moses J. SU-DD-A2-03: Influence of Equipment Variables Upon Cardiac Radiation Levels. Med Phys 2005. [DOI: 10.1118/1.1997420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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148
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Nickoloff E, Dutta A, Lu Z, So J, Ruzal-Shapiro C. SU-DD-A2-04: Direct Measurement of Pediatric CT Radiation Dose with a New Solid State Detector System. Med Phys 2005. [DOI: 10.1118/1.1997421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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149
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Thomas MB, Dutta A, Brown T, Charnsangavej C, Rashid A, Hoff PM, Dancey J, Abbruzzese JL. A phase II open-label study of OSI-774 (NSC 718781) in unresectable hepatocellular carcinoma. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.4038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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150
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Nickoloff E, Lu Z, So J, Dutta A. SU-FF-I-09: Comparison of Radiation Dose Indexes For CT Scanners: Measured Verses Automated Scanner Calculations. Med Phys 2005. [DOI: 10.1118/1.1997489] [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] Open
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