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Sahoo SK, Matsumoto M, Shiraishi K, Fujimoto K, Cuknic O, Zunic ZS. Dose effect for South Serbians due to 238U in natural drinking water. RADIATION PROTECTION DOSIMETRY 2007; 127:407-10. [PMID: 17567760 DOI: 10.1093/rpd/ncm294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The use of depleted uranium ammunition in South Serbia during the 1999 Kosovo conflict raised a great deal of public concern in the Balkans. Radioactivity levels of 238U in 20 wells and lake water samples were checked from the viewpoint of internal radiation exposure for South Serbian subjects. We have measured 238U concentration using inductively coupled plasma mass spectrometry, whereas thermal ionisation mass spectrometry has been used for the measurement of isotope ratios, e.g. 234U/238U and 235U/238U. The concentration of uranium in water samples varies in the range 1.37-63.18 mBq/L. 234U belongs to the 238U natural radioactive decay series, and at secular equilibrium, the abundance ratio, 234U/238U, corresponds to the ratio of their half-lives. The 234U/238U activity ratio varies in the range 0.88-2.2 and 235U/238U isotope ratio varies from 0.00698 to 0.00745. These findings indicate that uranium in water was a mixture of natural and anthropogenic origin. The annual effective dose due to 238U was estimated to be in the range 9.2 x 10(-5)-2.1 x 10(-3) mSv.
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Mohapatra M, Sahoo SK, Anand S, Das RP. Removal of As(V) by Cu(II)-, Ni(II)-, or Co(II)-doped goethite samples. J Colloid Interface Sci 2006; 298:6-12. [PMID: 16403505 DOI: 10.1016/j.jcis.2005.11.052] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2005] [Revised: 11/22/2005] [Accepted: 11/24/2005] [Indexed: 11/15/2022]
Abstract
The present study reports removal of As(V) by adsorption onto laboratory-prepared pure and Cu(II)-, Ni(II)-, and Co(II)-doped goethite samples. The X-ray diffraction patterns showed only goethite as the crystalline phase. Doping of ions in the goethite matrix resulted in shift of d-values. Various parameters chosen for adsorption were nature of adsorbent, percentage of doped cations in goethite matrix, contact time, solution pH, and percentage of adsorbate. It was observed that the pH(pzc) of the goethite surface depended on the nature and concentration of metal ions. The surface area as well as the loading capacity increased with the increase of dopant percentage in goethite matrix. A maximum loading capacity of 19.55 mg/g was observed for 2.7% Cu(II)-doped goethite. The adsorption kinetics for Ni(II), Co(II) and for undoped goethite attained a quasi-equilibrium state after 30 min with almost negligible adsorption beyond this time. In case of Cu(II)-doped goethite samples, the quasi-equilibrium state for As(V) adsorption was observed after 60 min. At each studied pH condition, it was observed that the percentage of adsorption of As(V) decreased in the order Cu(II)-doped goethite > or = Ni(II)-doped goethite > Co(II)-doped goethite > pure goethite. The adsorption followed: Langmuir isotherm, indicating monolayer formation.
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Swain P, Dash S, Bal J, Routray P, Sahoo PK, Sahoo SK, Saurabh S, Gupta SD, Meher PK. Passive transfer of maternal antibodies and their existence in eggs, larvae and fry of Indian major carp, Labeo rohita (Ham.). FISH & SHELLFISH IMMUNOLOGY 2006; 20:519-27. [PMID: 16157486 DOI: 10.1016/j.fsi.2005.06.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2004] [Revised: 05/25/2005] [Accepted: 06/28/2005] [Indexed: 05/04/2023]
Abstract
Lack of immune competence in the early stages of life leads to severe mortality in larval stages of different fish species including Indian major carp (IMC). Investigation through indirect enzyme linked immunosorbent assay (ELISA) and agglutination test revealed a significant increase in specific serum antibody response in the brood fish of Indian major carp, Labeo rohita (Ham.) following immunisation with a virulent Aeromonas hydrophila bacterin 1 month prior to breeding, which was transferred to larvae through the egg. No significant differences (P > 0.05) in mean antibody levels in larvae at the 1st and 2nd weeks post-hatch was recorded while a slight rise in antibody level was observed in 3-week-old fry, perhaps due to exposure to A. hydrophila present in the aquatic environment. Immunised brood fish serum, egg and larval extracts in non-reducing sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) and subsequent western blot analysis revealed an antibody molecule of approximate molecular weight 210 kDa. On challenge with virulent A. hydrophila, a significant reduction in mortality was recorded in immunised larvae and fry (58.0, 43.75 and 37.14% in the 1st, 2nd and 3rd week, respectively) relative to control fish (87.0, 79.0 and 76.4% in 1st, 2nd and 3rd week, respectively). The present study indicated the role of maternally derived antibody in protection of hatchlings of Indian major carp against specific pathogens.
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Jyot G, Sahoo SK, Battu RS, Kang BK, Singh B. Dissipation of ethion on brinjal (Solanum melongena L.) under subtropical conditions at Ludhiana, Punjab, India. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2005; 75:1094-7. [PMID: 16402297 DOI: 10.1007/s00128-005-0861-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2005] [Accepted: 09/20/2005] [Indexed: 05/06/2023]
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105
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Sahoo PK, Sahoo SK, Giri SS, Swain T, Sahu AK. Seminoma in hybrid catfish [Clarias batrachus (Linnaeus) female x Clarias gariepinus (Burchell) male]. INDIAN JOURNAL OF EXPERIMENTAL BIOLOGY 2004; 42:626-7. [PMID: 15260117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
Spontaneous testicular tumors, seminoma, were noticed in four male hybrid catfish (C. batrachus female x C. gariepinus male) after the age of two years. The hybrids showed massive abdominal swelling with catchectic body and free lobulated, encapsulated tumors (> 325 g) within the serosanguinous fluid-filled peritoneal cavities. The tumor cells were large and polyhedral with prominent centrally located nuclei. Other vital organs appeared normal. It seems to be the first report of seminoma in hybrid catfish and possibly of genetic cause.
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106
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Sahoo SK, Kapoor SK, Singh B. Estimation of residues of profenofos in/on tomato, Lycopersicon esculentum Mill. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2004; 72:970-974. [PMID: 15266693 DOI: 10.1007/s00128-004-0338-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
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107
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Nishimura Y, Sahoo SK, Kim HS, Homma-Takeda S, Watanabe Y, Inaba J. Biokinetics of radiotellurium in rats. RADIATION PROTECTION DOSIMETRY 2003; 105:285-290. [PMID: 14526972 DOI: 10.1093/oxfordjournals.rpd.a006241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Radiotellurium is present in the environment primarily due to its release during nuclear reactor accidents. Little is known of tellurium metabolism in juveniles, although the element is relatively abundant and has a number of industrial uses. A biokinetic study of radiotellurium in rats was performed using gamma-ray counting. Wistar strain rats were used to determine the uptake of H2(123m)TeO3 by the whole-body retention of juvenile rats and the conceptus in relation to its gestational stages, by measurements in the placenta, fetal membranes, fetal fluid and fetus. The whole-body retention of 123mTe in juvenile rats was higher than that of adult rats. The relative concentration in the placenta and fetal membranes was higher than in the fetus. No activity was observed in the fetal fluid. These results indicate that the placenta and fetal membranes play significant roles as barriers to the transfer of 123mTe into the fetus. The ratio, relative concentration in fetus/relative concentration in mother (C(F)/C(M)), was calculated. The C(F)/C(M) ratio was dependent on the stage of gestation and ranged from 0.2 to 0.5. A little 123mTe was transferred to the suckling rats through the mother's milk when the isotope was administered intravenously to the mother.
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108
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Dash JK, Sahoo PK, Bhuyan SK, Sahoo SK. Prevalence of dental caries and treatment needs among children of Cuttack (Orissa). J Indian Soc Pedod Prev Dent 2002; 20:139-43. [PMID: 12587749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/28/2023] Open
Abstract
An epidemiological investigation was carried out to know the prevalence of Dental Caries amongst 1257 children in the age group of 5, 8, 11 & 15 years respectively attending schools in the city of Cuttack, Orissa. The examination was carried out under natural light and dental caries was diagnosed according to W.H.O. Criteria 1983. The point prevalence of dental caries was recorded to be 64.3% with an average DMFT of 2.38. The prevalence of caries showed a pattern of occurrence i.e. prevalence consistantly increased from 5 years to 8 years age group and subsequently decreased at 11 years and 15 years age. Regarding treatment needs, 63.6% children required dental treatment for various reason and it is in accordance with dental caries prevalence of different age group.
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Sahu AK, Sahoo SK, Giri SS. Efficacy of water hyacinth compost in nursery ponds for larval rearing of Indian major carp, Labeo rohita. BIORESOURCE TECHNOLOGY 2002; 85:309-311. [PMID: 12365499 DOI: 10.1016/s0960-8524(02)00100-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The use of water hyacinth compost as manure in nursery ponds for larval rearing of Indian major carp, Labeo rohita was studied. Better performance with regard to growth and survivability of the larvae was recorded in the ponds treated with water hyacinth compost (Group A) than in either the ponds treated with inorganic fertilizers (Group B) or the ponds where no treatment was applied (Group C). The average percentages of survival in Groups A, B and C were 14.3, 11.2 and 5.0, respectively. Thus about 186% increase in the survivability was recorded in the ponds treated with water hyacinth compost (P < 0.01), whereas the increase was about 124% in the ponds treated with only inorganic fertilizers, when compared with the ponds which were without any treatment.
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Sahoo SK, Sawa T, Fang J, Tanaka S, Miyamoto Y, Akaike T, Maeda H. Pegylated zinc protoporphyrin: a water-soluble heme oxygenase inhibitor with tumor-targeting capacity. Bioconjug Chem 2002; 13:1031-8. [PMID: 12236785 DOI: 10.1021/bc020010k] [Citation(s) in RCA: 113] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Heme oxygenase (HO) is a key enzyme in heme metabolism; it oxidatively degrades heme to biliverdin, accompanied by formation of free iron and carbon monoxide. Biliverdin is subsequently reduced by cytosolic biliverdin reductase to form bilirubin, a potent antioxidant. We recently found that tumor cells utilize HO to protect themselves from oxidative stress by producing the antioxidant bilirubin. This result suggested an important potential therapeutic strategy: suppression of bilirubin production with the use of HO inhibitors; hence, cancer cells become vulnerable to oxidative stress induced by anticancer drugs or leukocytes of the host. This concept was validated by using the intraarterial administration of an HO inhibitor, zinc protoporphyrin, in nonphysiological solution. In the present study, zinc protoporphyrin (ZnPP) was conjugated with poly(ethylene glycol) (PEG) with molecular weight of 5000, to make ZnPP, a water-soluble compound (PEG-ZnPP), and to improve its tumor-targeting efficiency. PEG was conjugated to ZnPP through newly introduced amino groups, where ethylenediamine residues were added at C6 and C7 of protoporphyrin. The divalent zinc cation was chelated into the protoporphyrin ring to obtain PEG-ZnPP. PEG-ZnPP did become highly water-soluble, and it formed multimolecular associations with molecules larger than 70 kDa in aqueous media. PEG-ZnPP inhibited splenic microsomal HO activity in vitro in a competitive manner in the presence of hemin, with an apparent inhibitory constant of 0.12 microM. Most important, PEG-ZnPP injected intravenously significantly suppressed intratumor HO activity in a murine solid tumor model, which suggests that tumor-targeted inhibition of HO is possible with the use of PEG-ZnPP.
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Sahoo SK, Tudu D. Role of duodenal bile crystal analysis in idiopathic pancreatitis. TROPICAL GASTROENTEROLOGY : OFFICIAL JOURNAL OF THE DIGESTIVE DISEASES FOUNDATION 2001; 22:205-6. [PMID: 11963326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
BACKGROUND/AIM The aim of this study was to find out the incidence and clinical use of duodenal bile crystal analysis in patients presenting with idiopathic pancreatitis. MATERIALS AND METHODS Sixty consecutive patients with acute pancreatitis were studied. They were divided into two subgroups (known and unknown causes). Sixty patients were used as controls and divided into 3 subgroups (n = 20 each). The patients of acute pancreatitis with severe or life threatening complications or those requiring surgical interventions were excluded. Bile samples from both groups were analyzed for presence or absence of crystals. RESULTS The maximum age incidence of acute pancreatitis was in the fifth decade (41-50 years). The M/F ratio was 3.6:1. Recurrent acute pancreatitis was observed in 26.6% cases (20% idiopathic vs. 6.6% known aetiology). Twenty-five percent of the control sub group (n = 20) cases of cholelithiasis without history of pancreatitis had positive microcrystals in their bile sample. In patients with idiopathic pancreatitis (n = 18), 7 cases (11.6%) had crystals in the bile. In those with known causes of pancreatitis (n = 42), 33 cases (55%) had positive crystals in the bile. CONCLUSION Thirty percent of our patients had idiopathic acute pancreatitis with a high rate of clinical recurrence (20%). Duodenal bile crystal analysis detected 7 cases of microlithiasis out of 18 cases in this group and suggested an aetiology. This procedure should be used more often.
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Gaur U, Sahoo SK, De TK, Ghosh PC, Maitra A, Ghosh PK. Biodistribution of fluoresceinated dextran using novel nanoparticles evading reticuloendothelial system. Int J Pharm 2000; 202:1-10. [PMID: 10915921 DOI: 10.1016/s0378-5173(99)00447-0] [Citation(s) in RCA: 155] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The rapid clearance of circulating nanoparticles from the blood stream coupled with their high uptake by liver and spleen has thus far been overcome by reducing the particle size, and by making the particle surface hydrophilic with poloxamers and poloxamines. We have prepared hydrogel nanoparticles of polyvinylpyrrolidone of a size less than 100 nm diameter with precise size distribution. Since the inner cores of these particles are also hydrophilic, these particles are capable of encapsulating water-soluble compounds. Biodistribution of these particles shows practically negligible (<1%) uptake by the macrophages in liver and spleen, and approximately 5-10% of these particles remain in circulation even 8 h after i.v. injection. Increasing the surface hydrophobicity as well as particle size can increase the RES uptake of these particles. Because of longer residence in blood, the hydrogel nanoparticles have potential therapeutic applications particularly in cancer: the water-soluble cytotoxic agents encapsulated in these particles can be targeted to tumors while minimizing the likelihood of toxicity to reticuloendothelial system (RES).
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113
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Sahoo SK, De TK, Ghosh PK, Maitra A. pH- and Thermo-sensitive Hydrogel Nanoparticles. J Colloid Interface Sci 1998; 206:361-368. [PMID: 9756648 DOI: 10.1006/jcis.1998.5692] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
pH- and temperature-sensitive hydrogel nanoparticles of copolymers of vinylpyrrolidone (VP) and acrylic acid (AA) cross-linked with NN' methylene bis acrylamide (MBA) of sizes up to 50 nm diameter loaded with marker compound FITC-dextran (mol wt. 19.3 kD) were prepared in the aqueous core of reverse micellar droplets and were dispersed in aqueous buffer. These particles have high entrapment efficiency, and the lyophilized powder can be redissolved in buffer without any significant agglomeration. The release of FITC-dextran from these particles was found to be pH- and temperature-dependent. The release was slow in acid solution, but it increased considerably as the pH of the medium was increased. The release rate was also increased with the increase of temperature. Copyright 1998 Academic Press.
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Abstract
The effect of novel and complex stimulus cubes on the exploratory behaviour of human infants was analysed in two studies (ns = 30 and 20). Infants showed relatively greater preference for complex patterned cubes, and their exploratory behaviour habituated over 5 days.
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Sahoo SK. Is a hypertensive always a hypertensive? THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 1993; 41:765-6. [PMID: 8005953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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116
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Sahoo SK. Hypertension in alcoholic population of Jhabua. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 1993; 41:759. [PMID: 8005945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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117
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Sahoo SK, Samal KC. Male infertility - an overview. QUARTERLY MEDICAL REVIEW 1980; 31:15-26. [PMID: 7012889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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118
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Sahoo SK, Tripathy N. Cholera EL Tor in Orissa. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 1979; 27:1085-8. [PMID: 549919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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119
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Tripathy N, Sahoo SK. Verapamil in hypertension. Indian Heart J 1979; 31:321-5. [PMID: 546716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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Sahoo SK, Tripathy N, Debi BP. Acute fatal DDS poisoning. (Report of 4 cases). LEPROSY IN INDIA 1979; 51:244-8. [PMID: 480916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Acute dapsone poisoning is rare and such cases are either accidental or suicidal. Though accidental DDS poisoning are reported in children, the same is fairly uncommon in adults. Only 2 such cases are reported in India literature. We here report 4 cases of fatal sucidial DDS poisoning in adults resulting death in 3 cases. The reported acute symptoms include nausea, vomiting, hyperexcitability followed by depression, Carpopedal spasm or convulsions. The most marked signs are dyspnoea and cyanosis. The symptoms are due to methaemoglobinaemia, and or sulphaemoglobinaemia. Normally dapsone induces red cell haemolysis and even with small therapeutic doses of 25-100 mg per day, and in toxic doses reduces the oxygen carrying capacity of blood and damages the red cells making them more vulnerable for haemolysis. The peculiarity of the presentation in this series are manifestation of severe haemorrhagic episode in one case and progressive jaundice in another besides cyanosis. None of the cases had carpopedal spasm or convulsion. Out of four cases three died inspite of intensive care, intravenous vitamin C, exchange transfusion (2 cases) and other supportive measures. Intravenous methylene blue could not be used in these cases due to non-availability.
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